span_1996
=========

R\. Span and W\. Wagner, "A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple\-Point Temperature to 1100 K at Pressures up to 800 MPa", J\. Phys\. Chem\. Ref\. Data 25, 1509 \(1996\)

`Source record <https://github.com/LupoLab/optmat/blob/main/src/optmat/data/sources/span_1996.toml>`__ · :doc:`Catalogue </the-data/sources>` · :doc:`Review register </register>`

DOI: `10\.1063/1\.555991 <https://doi.org/10.1063/1.555991>`__

**Source kind:** fit

**Recorded technique:** A reference Helmholtz\-energy equation of state for carbon dioxide from the triple point to 1100 K and 800 MPa, fitted to selected thermodynamic data\.

**Materials in structured entries:** None recorded.

**Dataset quantities:** None recorded.

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

Curation notes
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Identity VALIDATED\_WITH\_WARNINGS by the library \(an equation warning on pdf p\. 38\)\. Pages are pdf pages\.

IDEAL GAS AND CONSTANTS\: M = 44\.0098\(16\) g/mol \(p\. 6\), R = 8\.314510 J/\(mol K\) \(p\. 7\); the ideal\-gas part \(Eq\. 6\.2, p\. 36; Table 27, p\. 33\) agrees with Chao's values to \+\-0\.002 % from 210 K to 1500 K\. Range 216\.592\-1100 K, 800 MPa\.

AGAINST COOLPROP 8\.0\.0 \(reference key Span\-JPCRD\-1996\)\: the same M, R and ideal part \(computed 2026\-09\-30\)\.

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

Datasets
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No datasets are recorded.

Formulas
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No formulas are recorded.

Corrections
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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.