ABSTRACT

The equilibrium solubilities of four recently synthesized 2H-1-benzopyran (2H-chromene) derivatives have been measured at temperatures ranging from 308 K to 348 K and pressures from (12.2 to 35.5) MPa in supercritical carbon dioxide. The data were obtained by using a simple static sampling apparatus, which was tested by measuring the solubility of naphthalene in supercritical carbon dioxide. The measured solubilities were correlated using a semiempirical model. The calculated results show satisfactory agreement with the experimental data.

Compounds

#	Formula	Name
1	CO2	carbon dioxide
2	C13H12O5	dimethyl 2H-1-benzopyran-2,3-dicarboxylate
3	C23H26O5	di-tert-butyl-3H-naphtho[2,1-b]pyran-2,3-dicarboxylate
4	C13H11BrO5	dimethyl-6-bromo-2H-1-benzopyran-2,3-dicarboxylate
5	C17H14O5	dimethyl-3H-naphtho[2,1-b]pyran-2,3-dicarboxylate

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 2	Mole fraction - 1 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Gas	OTHER	18
POMD	1 3	Mole fraction - 1 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Gas	OTHER	45
POMD	1 4	Mole fraction - 1 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Gas	OTHER	45
POMD	1 5	Mole fraction - 1 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Gas	OTHER	40

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

Solubilities of Some 2H-Chromene Derivatives in Supercritical Carbon Dioxide

Bahramifar, N.[Naader], Yamini, Y.[Yadollah], Ramazani, A.[Ali], Noshiranzadeh, N.[Nader]

ABSTRACT