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Vapor Pressure Coefficients: Air
Vapor pressure equation coefficients for 345 pure compounds from Perry's CEH 8th Ed. Table 2-8. Equation form: ln(P/Pa) = C1 + C2/T + C3*ln(T) + C4*T^C5, where T is in Kelvin. Each row also provides the valid temperature range (Tmin_K, Tmax_K) and corresponding pressure bounds.
| compound name | C1 | C2 | C3 | C4 | C5 | CAS no | P at Tmax Pa (Pa) | P at Tmin Pa (Pa) | T unit | Tmax K (K) | Tmin K (K) | data source table | equation form | formula |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air | 21.662 | -692.39 | -0.392 | 0.004757 | 1 | 132259-10-0 | 3,793,000 | 5,640 | K | 132.45 | 59.15 | Table 2-8 | ln(P/Pa) = C1 + C2/T + C3*ln(T) + C4*T^C5 | Mixture |
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