ABSTRACT

The vapor pressures of several aliphatic and phenyl substituted primary amines at T/K = 298.15 are measured by transpiration studies, and their vaporization enthalpies are calculated. The results were combined with compatible literature values to evaluate both the vaporization enthalpy and vapor pressure of (d)-amphetamine by correlation gas chromatography. The results are compared to existing values either estimated or measured for racemic amphetamine. Vaporization enthalpies and vapor pressures at T/K = 298.15 of the following were measured by transpiration (kJ*mol 1, p/Pa): 1-heptanamine, (49.75 +- 0.38, 291); 1-octanamine, (55.05 +- 0.29, 108); 1-decanamine, (64.94 +- 0.32, 12); benzylamine, (54.32 +- 0.32, 88); (dl)-?-methylbenzylamine, (55.26 +- 0.33, 82); 2-phenethylamine (57.51 +- 0.35, 43). The use of several of these materials as standards resulted in a vaporization enthalpy and vapor pressure for (d)-amphetamine at T/K = 298.15 of (58.2 +- 2.7) kJ mol 1 and (38 +- 12) Pa.

Compounds

#	Formula	Name
1	C7H9N	benzylamine
2	C9H13N	(S)-1-phenylpropan-2-amine
3	C8H11N	2-phenylethylamine
4	C8H11N	1-phenylethanamine
5	C10H23N	1-decanamine
6	C7H17N	1-heptanamine
7	C8H19N	1-octanamine

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Phase	Method	#Points
POMD	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Transpiration method	46
POMD	2	Molar enthalpy of vaporization or sublimation, kJ/mol ; Liquid	Temperature, K; Liquid	Liquid Gas	Correlation gas chromatography	1
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Correlation GC	1
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Transpiration method	31
POMD	4	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Transpiration method	12
POMD	5	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Transpiration method	32
POMD	6	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Transpiration method	14
POMD	7	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Transpiration method	31

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

The Vaporization Enthalpy and Vapor Pressure of (d)-Amphetamine and of Several Primary Amines Used as Standards at T/K = 298 As Evaluated by Correlation Gas Chromatography and Transpiration

Thornton, M.[Melissa], Chickos, J.[James], Garist, I. V.[Inna V.], Varfolomeev, M. A.[Mikhail A], Svetlov, A. A.[Aleksei A.], Verevkin, S. P.[Sergey P.]

ABSTRACT