Vapor Pressure Coefficients: Acetaldehyde to Cyclopentene
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Acetaldehyde | 193.69 | -8,036.7 | -29.502 | 0.043678 | 1 | 75-07-0 | 5,565,000 | 0.323 | K | 466 | 150.15 | Table 2-8 | ln(P/Pa) = C1 + C2/T + C3*ln(T) + C4*T^C5 | C2H4O |
| Benzoic_acid | 88.513 | -11,829 | -8.6826 | 0 | 6 | 65-85-0 | 4,469,000 | 796 | K | 751 | 395.45 | Table 2-8 | ln(P/Pa) = C1 + C2/T + C3*ln(T) + C4*T^C5 | C7H6O2 |
| 2-Butanol | 114.68 | -9,850.2 | -12.963 | 0 | 6 | 78-92-2 | 4,182,000 | 0.000002 | K | 535.9 | 158.45 | Table 2-8 | ln(P/Pa) = C1 + C2/T + C3*ln(T) + C4*T^C5 | C4H10O |
| Chlorine | 71.334 | -3,855 | -8.5171 | 0.012378 | 1 | 7782-50-5 | 7,793,000 | 1,370 | K | 417.15 | 172.12 | Table 2-8 | ln(P/Pa) = C1 + C2/T + C3*ln(T) + C4*T^C5 | Cl2 |
| Cyclopentene | 67.952 | -5,187.5 | -7.0785 | 0.000007 | 2 | 142-29-0 | 4,799,000 | 0.0128 | K | 507 | 138.13 | Table 2-8 | ln(P/Pa) = C1 + C2/T + C3*ln(T) + C4*T^C5 | C5H8 |
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