span_2000
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R\. Span, E\. W\. Lemmon, R\. T Jacobsen, W\. Wagner and A\. Yokozeki, "A Reference Equation of State for the Thermodynamic Properties of Nitrogen for Temperatures from 63\.151 to 1000 K and Pressures to 2200 MPa", J\. Phys\. Chem\. Ref\. Data 29, 1361 \(2000\)

`Source record <https://github.com/LupoLab/optmat/blob/main/src/optmat/data/sources/span_2000.toml>`__ · :doc:`Catalogue </the-data/sources>` · :doc:`Review register </register>`

DOI: `10\.1063/1\.1349047 <https://doi.org/10.1063/1.1349047>`__

**Source kind:** fit

**Recorded technique:** A reference Helmholtz\-energy equation of state for nitrogen from the freezing line to 1000 K and 2200 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 by the library\. Pages are pdf pages\.

IDEAL GAS AND CONSTANTS\: R = 8\.314510 J/\(mol K\) and M = 28\.01348 g/mol \(p\. 5\); the ideal\-gas part \(Eq\. 49, p\. 21\) reproduces statistical\-mechanics values to 0\.01 % from 20 K to 5000 K\. Range 63\.151\-1000 K, 2200 MPa\.

AGAINST COOLPROP 8\.0\.0 \(reference key Span\-JPCRD\-2000\)\: the same M, R and ideal part \(computed 2026\-09\-30\)\.

**Recorded bibliographic identity status:** VALIDATED. 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.