tegeler_1999

Ch. Tegeler, R. Span and W. Wagner, “A New Equation of State for Argon Covering the Fluid Region for Temperatures From the Melting Line to 700 K at Pressures up to 1000 MPa”, J. Phys. Chem. Ref. Data 28, 779 (1999)

Source record · Catalogue · Review register

DOI: 10.1063/1.556037

Source kind: fit

Recorded technique: A reference Helmholtz-energy equation of state for argon from the melting line to 700 K and 1000 MPa, fitted to selected thermodynamic data.

Materials in structured entries: None recorded.

Dataset quantities: None recorded.

Contents: 0 datasets; 0 formulas.

Curation notes

Identity VALIDATED_WITH_WARNINGS by the library. Pages are pdf pages.

IDEAL GAS AND CONSTANTS: M = 39.948(1) g/mol and R = 8.31451 J/(mol K) (p. 5); the ideal-gas part is the monatomic gas’s, c_p0 = (5/2) R (Eq. 4.5, p. 26), electronic excitation contributing 0.01 % only at 10000 K. Range 83.8058-700 K, 1000 MPa (p. 31).

AGAINST COOLPROP 8.0.0 (reference key Tegeler-JPCRD-1999): the same M, R and ideal part (computed 2026-09-30). The equation’s own R is 5.7e-6 from CODATA’s (TC-758).

Recorded bibliographic identity status: VALIDATED_WITH_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents.

Datasets

No datasets are recorded.

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 review register for the checks and decisions.