Assay 98 - 101%
Refractive index at 20 °C 1.470 - 1.475
Acidity Max 0.2 ml of 0.1 N NaOH
required for 50 ml of 50% w/v solution
Alkalini NIL
Heavy metals (as Pb) Max 0.0005%
Iron (Fe) Max 0.0004%
Chloride (Cl) Max 0.0025%
Sulfate (SO4) Max 0.0030%
Ester Max 8.0 ml of 0.1M HCl required to
decolorise the 50 ml of 50% w/v
Solutionof glycerin in water
Sulfated ash Max 0.01%
Water Max 2%