8 декабря, 2015 
Pokraskin Refractive index is a characteristic property of solvents and is very sensitive to the composition of solvent blends. Therefore, it is use-
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Table 4.2: Properties of some important representative solvents
BP = boiling point or range; ST = surface tension at 20 °C, * at 25 °C; ER = relative evaporation rate (diethyl ether = 1); FP = flash point by closed cup; PGMEAc: propylene glycol monomethyl ether acetate (Note: Properties are selected from different resources without claiming to be complete and accurate) |
ful for checking purity and uniformity of solvent blends. Refractive index is mainly determined by the hydrocarbon backbone of a substance. In a homologous series, the refractive index increases with increasing length of the carbon chain, and decreases with increasing branching. The presence of cycloaliphatic and aromatic structures increases the refractive index of solvents.
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