ABSTRACT

A new set of molar heat capacity data for aqueous 2-amino-2-hydroxymethyl-1,3-propanediol 56 to 44 % by weight water, in a fixed amount of glycol - 40 % by weight) were gathered via reliable measurement method are presented in this report. The glycols considered were diethylene glycol (DEG), triethylene glycol (TEG), tetraethylene glycol (T4EG), propylene glycol (PG), dipropylene glycol (DPG) and tripropylene glycol (TPG). The 198 data points gathered fit excellently well the Redlich-Kister-type model for the temperature- and concentration-dependence of molar heat capacity for the different systems, with an overall AAD of 0.07 %.

Compounds

#	Formula	Name
1	C4H11NO3	2-amino-2-(hydroxymethyl)-1,3-propanediol
2	H2O	water
3	C4H10O3	diethylene glycol
4	C8H18O5	tetraethylene glycol
5	C6H14O4	triethylene glycol
6	C3H8O2	1,2-propanediol
7	C6H14O3	4-oxa-1,7-heptanediol
8	C9H20O4	2-[2-(2-hydroxypropoxy)propoxy]-1-propanol

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	Constraint	Phase	Method	#Points
POMD	7	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	6
POMD	1 3 2	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Mass fraction - 1; Liquid Temperature, K; Liquid	Mass fraction - 3; Liquid Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	33
POMD	1 5 2	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Mass fraction - 1; Liquid Temperature, K; Liquid	Mass fraction - 5; Liquid Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	33
POMD	1 4 2	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Mass fraction - 1; Liquid Temperature, K; Liquid	Mass fraction - 4; Liquid Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	33
POMD	6 1 2	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Mass fraction - 1; Liquid Temperature, K; Liquid	Mass fraction - 6; Liquid Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	33
POMD	1 2 7	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Mass fraction - 1; Liquid Temperature, K; Liquid	Mass fraction - 7; Liquid Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	33
POMD	1 2 8	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Mass fraction - 1; Liquid Temperature, K; Liquid	Mass fraction - 8; Liquid Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	33

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Molar heat capacities of some aqueous 2-amino-2-hydroxymethyl-1,3-propanediol + glycol systems

Lu, Y.-C.[Yu-Chyi], Caparanga, A.[Alvin], Li, M. -H.[Meng-Hui]

ABSTRACT