martin_1982
===========

M\. L\. Martin, R\. D\. Trengove, K\. R\. Harris and P\. J\. Dunlop, "Excess Second Virial Coefficients for Some Dilute Binary Gas Mixtures", Aust\. J\. Chem\. 35, 1525 \(1982\)

`Source record <https://github.com/LupoLab/optmat/blob/main/src/optmat/data/sources/martin_1982.toml>`__ · :doc:`Catalogue </the-data/sources>` · :doc:`Review register </register>`

DOI: `10\.1071/ch9821525 <https://doi.org/10.1071/ch9821525>`__

**Source kind:** measurement

**Recorded technique:** Pressure change on mixing \(the method of Knobler et al\.\) in a Loschmidt mixing cell\: equal volumes \(c\. 200 cm^3\) of two pure gases at identical initial pressures P\_1, very close to 190\.0 kPa, mixed by forming an unstable boundary with the heavy gas on top; the final pressure P\_inf read with a calibrated Texas Instruments quartz spiral gauge, and E computed from Delta P = P\_inf \- P\_1 by Eq\. \(3\) with the pure gases' B \(and, for a small correction, their third virial coefficients\) from Dymond and Smith's compilation\. Water bath held to \+\-1 mK; 290, 300 and 320 K only \(the cell's two lightly greased surfaces\)\. Gas purities above 99\.9 % \(CF4 99\.7 %\) \(p\. 1528\)\.

**Materials in structured entries:** Ar, CH4, CO2, H2, He, N2, Ne, O2

**Dataset quantities:** cross\_second\_virial\_coefficient, excess\_second\_virial\_coefficient, second\_virial\_coefficient

**Contents:** 44 datasets; 0 formulas.

Curation notes
--------------

Identity\: the PDF prints no DOI; the library found one work whose title, first author and year agree with the first page \(Aust\. J\. Chem\., 1982, 35, 1525\-9; manuscript received 10 March 1982\)\. Page numbers are the journal's\: p\. = pdf page \+ 1524\.

WHAT THE VALUES ARE \(p\. 1525\)\. E = B\_12 \- \(B\_11 \+ B\_22\)/2 \(Eq\. 2\), which the authors call the excess interaction second virial coefficient, and the interaction \(cross\) coefficient B\_12\. Their footnote distinguishes it from the excess second virial coefficient of a mixture, B\_m^E = B\_m \- \(x\_1 B\_11 \+ x\_2 B\_22\) = 2 x\_1 x\_2 E\. E is what was measured \(from Delta P, Eq\. 3\); B\_12 follows from E and the compiled pure B's \(Table 1, Dymond and Smith 1980\), and 'may need to be recalculated when more accurate B\_11 and B\_22 data become available' \(p\. 1528\)\. So E is primary, B\_12 a check, and Table 1 reproduced\. E is symmetric in the pair\: a pair is filed under the first species in sorted order whatever the printed order\. No mole fraction applies \(E does not depend on composition; the cell mixes equal volumes at equal pressure\)\.

TABLES EXTRACTED \(all on p\. 1526\)\: Table 1, the pure B's used \(He, Ne, Ar, H2, N2, O2, CH4, CO2; reproduced\); Table 2, the two runs per temperature for Ar\-N2 \(P\_1, Delta P, E, B\_12; E and B\_12 as checks\); Table 3, E and B\_12 of the twenty pairs at 290, 300 and 320 K\. Each grid was compared with its table image cell by cell \(2026\-10\-01\)\: no differences\. The library attaches Table 2's caption to Table 1 and the label 'Table 3' to Table 2's grid; the page image fixes which is which\.

SKIPPED\. The three pairs with CF4 \(Ar\+CF4, CH4\+CF4, CF4\+Ne\) and CF4's pure B \(CF4 is not an optmat gas\)\. In Table 3, CH4\+CF4 at 300 K prints E = 17\.9 and B\_12 = \-47\.5, where Eq\. \(2\) with Table 1 gives \-46\.45\: a misprint of one of them, not resolved here\. Table 4 \(p\. 1527\), Brewer's E for Ar\-N2, Ar\-H2 and N2\-He interpolated from his report \(Brewer 1967, not in the library\), and Fig\. 1, the same comparison over a wider range, are other work\: the values are in the dataset notes\. Table 5 \(p\. 1527\), the excess molar enthalpies of equimolar mixtures at 300 K and 190 kPa computed from E by Eq\. \(1\) \(each \+\-1\.0 J/mol\), has no quantity in the vocabulary\.

CHECKS\. \(1\) B\_12 = E \+ \(B\_11 \+ B\_22\)/2 with Table 1 reproduces every printed B\_12 of the seventeen extracted pairs within 0\.10 cm^3/mol, the rounding of E and B\_12 to 0\.1 \(51 cells\: 48 within 0\.05, 3 at 0\.10\)\. \(2\) Eq\. \(3\) as printed, without the third\-virial correction, with R = 8\.314 J/\(mol K\), Table 1's B and Table 2's P\_1 and Delta P, gives E = \-0\.645, \-0\.658 \(290 K\), \-0\.599, \-0\.599 \(300 K\), \-0\.666, \-0\.519 \(320 K\) cm^3/mol for the six Ar\-N2 runs, which round to the printed \-0\.6, \-0\.7, \-0\.6, \-0\.6, \-0\.7, \-0\.5\. \(3\) Table 3's Ar\+N2 row is the mean of Table 2's runs \(B\_12 \-7\.2 at 320 K from \-7\.3 and \-7\.1\)\.

UNCERTAINTY\. 'We believe the accuracy of the E values to be approximately \+\-0\.2 cm^3 mol^\-1' \(p\. 1528\)\: recorded as absolute 0\.2, level not stated\. The runs' Delta P is printed to 0\.1 Pa \(a subscript guard digit\); 0\.1 Pa in Delta P is about 0\.014 cm^3/mol in E at 190 kPa and 300 K\. No uncertainty is given for B\_12 or for Table 1\.

DOUBTS\. The temperatures are nominal \(290, 300, 320 K; the bath is held to \+\-1 mK but its absolute temperature is not stated\)\. The third\-virial correction \('a small correction', ref\. 4\) is not given, so Eq\. \(3\) can be checked only to the printed rounding\.

**Recorded bibliographic identity status:** VALIDATED\_WITH\_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents.

Datasets
--------

martin\_1982/B\_He
~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B_He",
     "material": "He",
     "file": "He/martin_1982__B_He.csv",
     "table": "tbl_8885f566057e",
     "quantity": "second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "reproduced",
     "reproduced_from": [
       "Dymond, J. H., and Smith, E. B., The Virial Coefficients of Pure Gases and Mixtures (Oxford University Press, 1980)"
     ]
   }

Table 1 \(p\. 1526\)\: the second virial coefficient of He at 290, 300 and 320 K that the authors took from Dymond and Smith's compilation to reduce their measurements \(Eq\. 3\) and to form B\_12 \(Eq\. 2\)\. Not measured here; no uncertainty printed\.

martin\_1982/B\_Ne
~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B_Ne",
     "material": "Ne",
     "file": "Ne/martin_1982__B_Ne.csv",
     "table": "tbl_8885f566057e",
     "quantity": "second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "reproduced",
     "reproduced_from": [
       "Dymond, J. H., and Smith, E. B., The Virial Coefficients of Pure Gases and Mixtures (Oxford University Press, 1980)"
     ]
   }

Table 1 \(p\. 1526\)\: the second virial coefficient of Ne at 290, 300 and 320 K that the authors took from Dymond and Smith's compilation to reduce their measurements \(Eq\. 3\) and to form B\_12 \(Eq\. 2\)\. Not measured here; no uncertainty printed\.

martin\_1982/B\_Ar
~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B_Ar",
     "material": "Ar",
     "file": "Ar/martin_1982__B_Ar.csv",
     "table": "tbl_8885f566057e",
     "quantity": "second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "reproduced",
     "reproduced_from": [
       "Dymond, J. H., and Smith, E. B., The Virial Coefficients of Pure Gases and Mixtures (Oxford University Press, 1980)"
     ]
   }

Table 1 \(p\. 1526\)\: the second virial coefficient of Ar at 290, 300 and 320 K that the authors took from Dymond and Smith's compilation to reduce their measurements \(Eq\. 3\) and to form B\_12 \(Eq\. 2\)\. Not measured here; no uncertainty printed\.

martin\_1982/B\_H2
~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B_H2",
     "material": "H2",
     "file": "H2/martin_1982__B_H2.csv",
     "table": "tbl_8885f566057e",
     "quantity": "second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "reproduced",
     "reproduced_from": [
       "Dymond, J. H., and Smith, E. B., The Virial Coefficients of Pure Gases and Mixtures (Oxford University Press, 1980)"
     ]
   }

Table 1 \(p\. 1526\)\: the second virial coefficient of H2 at 290, 300 and 320 K that the authors took from Dymond and Smith's compilation to reduce their measurements \(Eq\. 3\) and to form B\_12 \(Eq\. 2\)\. Not measured here; no uncertainty printed\.

martin\_1982/B\_N2
~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B_N2",
     "material": "N2",
     "file": "N2/martin_1982__B_N2.csv",
     "table": "tbl_8885f566057e",
     "quantity": "second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "reproduced",
     "reproduced_from": [
       "Dymond, J. H., and Smith, E. B., The Virial Coefficients of Pure Gases and Mixtures (Oxford University Press, 1980)"
     ]
   }

Table 1 \(p\. 1526\)\: the second virial coefficient of N2 at 290, 300 and 320 K that the authors took from Dymond and Smith's compilation to reduce their measurements \(Eq\. 3\) and to form B\_12 \(Eq\. 2\)\. Not measured here; no uncertainty printed\.

martin\_1982/B\_O2
~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B_O2",
     "material": "O2",
     "file": "O2/martin_1982__B_O2.csv",
     "table": "tbl_8885f566057e",
     "quantity": "second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "reproduced",
     "reproduced_from": [
       "Dymond, J. H., and Smith, E. B., The Virial Coefficients of Pure Gases and Mixtures (Oxford University Press, 1980)"
     ]
   }

Table 1 \(p\. 1526\)\: the second virial coefficient of O2 at 290, 300 and 320 K that the authors took from Dymond and Smith's compilation to reduce their measurements \(Eq\. 3\) and to form B\_12 \(Eq\. 2\)\. Not measured here; no uncertainty printed\.

martin\_1982/B\_CH4
~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B_CH4",
     "material": "CH4",
     "file": "CH4/martin_1982__B_CH4.csv",
     "table": "tbl_8885f566057e",
     "quantity": "second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "reproduced",
     "reproduced_from": [
       "Dymond, J. H., and Smith, E. B., The Virial Coefficients of Pure Gases and Mixtures (Oxford University Press, 1980)"
     ]
   }

Table 1 \(p\. 1526\)\: the second virial coefficient of CH4 at 290, 300 and 320 K that the authors took from Dymond and Smith's compilation to reduce their measurements \(Eq\. 3\) and to form B\_12 \(Eq\. 2\)\. Not measured here; no uncertainty printed\.

martin\_1982/B\_CO2
~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B_CO2",
     "material": "CO2",
     "file": "CO2/martin_1982__B_CO2.csv",
     "table": "tbl_8885f566057e",
     "quantity": "second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "reproduced",
     "reproduced_from": [
       "Dymond, J. H., and Smith, E. B., The Virial Coefficients of Pure Gases and Mixtures (Oxford University Press, 1980)"
     ]
   }

Table 1 \(p\. 1526\)\: the second virial coefficient of CO2 at 290, 300 and 320 K that the authors took from Dymond and Smith's compilation to reduce their measurements \(Eq\. 3\) and to form B\_12 \(Eq\. 2\)\. Not measured here; no uncertainty printed\.

martin\_1982/E\_Ar\_He
~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_Ar_He",
     "material": "Ar",
     "file": "Ar/martin_1982__E_Ar_He.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "He"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of Ar\-He at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_Ar\_He
~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_Ar_He",
     "material": "Ar",
     "file": "Ar/martin_1982__B12_Ar_He.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "He"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of Ar\-He at 290, 300 and 320 K, formed from E\_Ar\_He and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_Ar\_H2
~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_Ar_H2",
     "material": "Ar",
     "file": "Ar/martin_1982__E_Ar_H2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "H2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of Ar\-H2 at 290, 300 and 320 K, near 190\.0 kPa\. Brewer's interpolated values \(Table 4, p\. 1527\) are the same to the printed digit\.

martin\_1982/B12\_Ar\_H2
~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_Ar_H2",
     "material": "Ar",
     "file": "Ar/martin_1982__B12_Ar_H2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "H2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of Ar\-H2 at 290, 300 and 320 K, formed from E\_Ar\_H2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_Ar\_N2
~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_Ar_N2",
     "material": "Ar",
     "file": "Ar/martin_1982__E_Ar_N2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "N2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of Ar\-N2 at 290, 300 and 320 K, near 190\.0 kPa\. The means of the two runs of Table 2 at each temperature \(E\_runs\_Ar\_N2\)\. Brewer's interpolated values \(Table 4, p\. 1527\) are \-0\.5 at all three temperatures\.

martin\_1982/B12\_Ar\_N2
~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_Ar_N2",
     "material": "Ar",
     "file": "Ar/martin_1982__B12_Ar_N2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "N2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of Ar\-N2 at 290, 300 and 320 K, formed from E\_Ar\_N2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_Ar\_O2
~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_Ar_O2",
     "material": "Ar",
     "file": "Ar/martin_1982__E_Ar_O2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "O2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of Ar\-O2 at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_Ar\_O2
~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_Ar_O2",
     "material": "Ar",
     "file": "Ar/martin_1982__B12_Ar_O2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "O2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of Ar\-O2 at 290, 300 and 320 K, formed from E\_Ar\_O2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_Ar\_CO2
~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_Ar_CO2",
     "material": "Ar",
     "file": "Ar/martin_1982__E_Ar_CO2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "CO2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of Ar\-CO2 at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_Ar\_CO2
~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_Ar_CO2",
     "material": "Ar",
     "file": "Ar/martin_1982__B12_Ar_CO2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "CO2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of Ar\-CO2 at 290, 300 and 320 K, formed from E\_Ar\_CO2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_Ar\_CH4
~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_Ar_CH4",
     "material": "Ar",
     "file": "Ar/martin_1982__E_Ar_CH4.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "CH4"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of Ar\-CH4 at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_Ar\_CH4
~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_Ar_CH4",
     "material": "Ar",
     "file": "Ar/martin_1982__B12_Ar_CH4.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "CH4"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of Ar\-CH4 at 290, 300 and 320 K, formed from E\_Ar\_CH4 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_CO2\_He
~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_CO2_He",
     "material": "CO2",
     "file": "CO2/martin_1982__E_CO2_He.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "He"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of CO2\-He at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_CO2\_He
~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_CO2_He",
     "material": "CO2",
     "file": "CO2/martin_1982__B12_CO2_He.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "He"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of CO2\-He at 290, 300 and 320 K, formed from E\_CO2\_He and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_CO2\_N2
~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_CO2_N2",
     "material": "CO2",
     "file": "CO2/martin_1982__E_CO2_N2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "N2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of CO2\-N2 at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_CO2\_N2
~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_CO2_N2",
     "material": "CO2",
     "file": "CO2/martin_1982__B12_CO2_N2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "N2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of CO2\-N2 at 290, 300 and 320 K, formed from E\_CO2\_N2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_CO2\_O2
~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_CO2_O2",
     "material": "CO2",
     "file": "CO2/martin_1982__E_CO2_O2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "O2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of CO2\-O2 at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_CO2\_O2
~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_CO2_O2",
     "material": "CO2",
     "file": "CO2/martin_1982__B12_CO2_O2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "O2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of CO2\-O2 at 290, 300 and 320 K, formed from E\_CO2\_O2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_CH4\_CO2
~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_CH4_CO2",
     "material": "CH4",
     "file": "CH4/martin_1982__E_CH4_CO2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "CO2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of CH4\-CO2 \(printed as CO2\+CH4; filed under CH4, the first in sorted order\) at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_CH4\_CO2
~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_CH4_CO2",
     "material": "CH4",
     "file": "CH4/martin_1982__B12_CH4_CO2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "CO2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of CH4\-CO2 \(printed as CO2\+CH4; filed under CH4, the first in sorted order\) at 290, 300 and 320 K, formed from E\_CH4\_CO2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_CH4\_He
~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_CH4_He",
     "material": "CH4",
     "file": "CH4/martin_1982__E_CH4_He.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "He"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of CH4\-He at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_CH4\_He
~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_CH4_He",
     "material": "CH4",
     "file": "CH4/martin_1982__B12_CH4_He.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "He"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of CH4\-He at 290, 300 and 320 K, formed from E\_CH4\_He and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_CH4\_Ne
~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_CH4_Ne",
     "material": "CH4",
     "file": "CH4/martin_1982__E_CH4_Ne.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "Ne"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of CH4\-Ne at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_CH4\_Ne
~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_CH4_Ne",
     "material": "CH4",
     "file": "CH4/martin_1982__B12_CH4_Ne.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "Ne"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of CH4\-Ne at 290, 300 and 320 K, formed from E\_CH4\_Ne and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_CH4\_N2
~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_CH4_N2",
     "material": "CH4",
     "file": "CH4/martin_1982__E_CH4_N2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "N2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of CH4\-N2 at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_CH4\_N2
~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_CH4_N2",
     "material": "CH4",
     "file": "CH4/martin_1982__B12_CH4_N2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "N2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of CH4\-N2 at 290, 300 and 320 K, formed from E\_CH4\_N2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_CH4\_O2
~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_CH4_O2",
     "material": "CH4",
     "file": "CH4/martin_1982__E_CH4_O2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "O2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of CH4\-O2 at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_CH4\_O2
~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_CH4_O2",
     "material": "CH4",
     "file": "CH4/martin_1982__B12_CH4_O2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "O2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of CH4\-O2 at 290, 300 and 320 K, formed from E\_CH4\_O2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_N2\_O2
~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_N2_O2",
     "material": "N2",
     "file": "N2/martin_1982__E_N2_O2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "O2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of N2\-O2 at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_N2\_O2
~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_N2_O2",
     "material": "N2",
     "file": "N2/martin_1982__B12_N2_O2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "O2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of N2\-O2 at 290, 300 and 320 K, formed from E\_N2\_O2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_He\_N2
~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_He_N2",
     "material": "He",
     "file": "He/martin_1982__E_He_N2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "N2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of He\-N2 \(printed as N2\+He; filed under He, the first in sorted order\) at 290, 300 and 320 K, near 190\.0 kPa\. Brewer's interpolated values \(Table 4, p\. 1527\) are 18\.3, 17\.6 and 16\.0, 0\.7\-0\.9 cm^3/mol lower, 'well beyond the estimated experimental error' \(p\. 1528\); the difference had been seen before \(Bell and Dunlop 1981\)\.

martin\_1982/B12\_He\_N2
~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_He_N2",
     "material": "He",
     "file": "He/martin_1982__B12_He_N2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "N2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of He\-N2 \(printed as N2\+He; filed under He, the first in sorted order\) at 290, 300 and 320 K, formed from E\_He\_N2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_He\_O2
~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_He_O2",
     "material": "He",
     "file": "He/martin_1982__E_He_O2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "O2"
     }
   }

No use designation is explicitly recorded.

Table 3 \(p\. 1526\)\: the measured excess second virial coefficient E = B\_12 \- \(B\_11 \+ B\_22\)/2 of He\-O2 \(printed as O2\+He; filed under He, the first in sorted order\) at 290, 300 and 320 K, near 190\.0 kPa\.

martin\_1982/B12\_He\_O2
~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_He_O2",
     "material": "He",
     "file": "He/martin_1982__B12_He_O2.csv",
     "table": "tbl_856ba5037a07",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "O2"
     }
   }

Table 3 \(p\. 1526\)\: the interaction second virial coefficient B\_12 of He\-O2 \(printed as O2\+He; filed under He, the first in sorted order\) at 290, 300 and 320 K, formed from E\_He\_O2 and Dymond and Smith's B\_11 and B\_22 \(Table 1\) by Eq\. \(2\), so not independent of E; no uncertainty stated \(it carries the compiled B's, p\. 1528\)\.

martin\_1982/E\_runs\_Ar\_N2
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "E_runs_Ar_N2",
     "material": "Ar",
     "file": "Ar/martin_1982__E_runs_Ar_N2.csv",
     "table": "tbl_11bc84c101b5",
     "quantity": "excess_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "uncertainty": {
       "absolute": 0.2,
       "level": "not stated"
     },
     "parameters": {
       "partner": "N2"
     }
   }

Table 2 \(p\. 1526\)\: E of Ar\-N2 from each of two runs at 290, 300 and 320 K \(rows \<T\>\_1 and \<T\>\_2; P\_1 and Delta P in the printed column, each with a subscript guard digit\)\. Table 3's Ar\+N2 row \(E\_Ar\_N2\) is their mean\: a check, not a second measurement\. Eq\. \(3\) reproduces each printed E \(the record's notes\)\.

martin\_1982/B12\_runs\_Ar\_N2
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "B12_runs_Ar_N2",
     "material": "Ar",
     "file": "Ar/martin_1982__B12_runs_Ar_N2.csv",
     "table": "tbl_11bc84c101b5",
     "quantity": "cross_second_virial_coefficient",
     "unit": "cm3/mol",
     "abscissa": "temperature",
     "abscissa_unit": "K",
     "use": "check",
     "parameters": {
       "partner": "N2"
     }
   }

Table 2 \(p\. 1526\)\: B\_12 of Ar\-N2 from each of two runs at 290, 300 and 320 K, from E\_runs\_Ar\_N2 and Table 1's B by Eq\. \(2\)\.

Formulas
--------

No formulas are recorded.

Corrections
-----------

No dataset errata are recorded in this source record.

Formula corrections, where recorded, appear with their formulas above. Curation notes may also discuss corrections or unresolved interpretation. Consult the :doc:`review register </register>` for the checks and decisions.