Propyne
- Formula: C3H4
- Molecular weight: 40.0639
- IUPAC Standard InChIKey: MWWATHDPGQKSAR-UHFFFAOYSA-N
- CAS Registry Number: 74-99-7
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- Other names: Methylacetylene; 1-Propyne; Allylene; Propine; CH3C≡CH; Acetylene, methyl-
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Phase change data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 250.0 ± 0.5 | K | AVG | N/A | Average of 18 out of 19 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 170.2 ± 0.6 | K | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 168.5 | K | N/A | Maass and Wright, 1921 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 402.4 ± 0.2 | K | N/A | Tsonopoulos and Ambrose, 1996 | |
Tc | 402.38 | K | N/A | Vohra, Kang, et al., 1962 | Uncertainty assigned by TRC = 0.05 K; TRC |
Tc | 401.1 | K | N/A | Maass and Wright, 1921 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 55.6 ± 0.2 | atm | N/A | Tsonopoulos and Ambrose, 1996 | |
Pc | 55.5400 | atm | N/A | Vohra, Kang, et al., 1962 | Uncertainty assigned by TRC = 0.0499 atm; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Vc | 0.1635 | l/mol | N/A | Tsonopoulos and Ambrose, 1996 | |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 6.12 ± 0.02 | mol/l | N/A | Tsonopoulos and Ambrose, 1996 | |
ρc | 6.113 | mol/l | N/A | Vohra, Kang, et al., 1962 | Uncertainty assigned by TRC = 0.01 mol/l; TRC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
5.50 | 242. | A | Stephenson and Malanowski, 1987 | Based on data from 183. to 257. K.; AC |
4.97 | 272. | A | Stephenson and Malanowski, 1987 | Based on data from 257. to 402. K.; AC |
5.07 | 318. | A | Stephenson and Malanowski, 1987 | Based on data from 303. to 361. K.; AC |
5.23 | 374. | A | Stephenson and Malanowski, 1987 | Based on data from 359. to 402. K.; AC |
5.54 | 264. | A | Stephenson and Malanowski, 1987 | Based on data from 249. to 306. K.; AC |
5.28 | 275. | N/A | Reid, 1972 | AC |
5.71 | 240. | N/A | Van Hook, 1967 | Based on data from 162. to 255. K.; AC |
5.16 | 338. | N/A | Vohra, Kang, et al., 1962 | Based on data from 323. to 400. K.; AC |
5.59 | 235. | N/A | Booth, Burchfield, et al., 1933 | Based on data from 194. to 250. K. See also Boublik, Fried, et al., 1984.; AC |
5.11 | 230. | N/A | Maass and Wright, 1921 | Based on data from 200. to 260. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
161.5 to 254.27 | 4.94648 | 1226.123 | -1.926 | van Hook, 1967 | Coefficents calculated by NIST from author's data. |
249.9 to 398. | 4.02498 | 818.384 | -46.457 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Maass and Wright, 1921
Maass, O.; Wright, C.H.,
SOME PHYSICAL PROPERTIES OF HYDROCARBONS CONTAINING TWO AND THREE CARBON ATOMS.,
J. Am. Chem. Soc., 1921, 43, 5, 1098-1111, https://doi.org/10.1021/ja01438a013
. [all data]
Tsonopoulos and Ambrose, 1996
Tsonopoulos, C.; Ambrose, D.,
Vapor-Liquid Critical Properties of Elements and Compounds. 6. Unsaturated Aliphatic Hydrocarbons,
J. Chem. Eng. Data, 1996, 41, 645-656. [all data]
Vohra, Kang, et al., 1962
Vohra, S.P.; Kang, T.L.; Kobe, K.A.; McKetta, J.J.,
P-V-T Properties of Propyne.,
J. Chem. Eng. Data, 1962, 7, 1, 150-155, https://doi.org/10.1021/je60012a044
. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Reid, 1972
Reid, Robert C.,
Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00,
AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637
. [all data]
Van Hook, 1967
Van Hook, W. Alexander,
Vapor Pressures of the Methylacetylenes, H3CCCH, H3CCCD, D3CCCH, and D3CCCD,
J. Chem. Phys., 1967, 46, 5, 1907, https://doi.org/10.1063/1.1840952
. [all data]
Booth, Burchfield, et al., 1933
Booth, Harold Simmons; Burchfield, Paul E.; Bixby, Eva May; McKelvey, J.B.,
Fluorochloroethylenes,
J. Am. Chem. Soc., 1933, 55, 6, 2231-2235, https://doi.org/10.1021/ja01333a005
. [all data]
Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E.,
The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]
van Hook, 1967
van Hook, W.A.,
Vapor Pressures of the Methylacetylenes, H3CCCH, H3CCCD, D3CCCH, and D3CCCD,
J. Chem. Phys., 1967, 46, 5, 1907-1918, https://doi.org/10.1063/1.1840952
. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Pc Critical pressure Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature Vc Critical volume ΔvapH Enthalpy of vaporization ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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