Glycerol
is a colorless, viscous, hygroscopic, sweet-tasting trihydric alcohol. It is also called glycerin
or glycerine, with the
term glycerol being preferred as the pure chemical form and the term glycerin(e) being
primarily used when the
compound is used commercially in various grades.

Index name Index
Grade Super grade
Chroma ≤ 20
Assay% ≥ 99.5
Density20centigradeg/m ≥ 1.2598
Sulfating Ash (%) ≤ 0.01
Acidity or Alkalinity(mmol/100g)≤ 0.064
Saponification equivalent(mmol/100g) ≤ 0.64
Heavy metals Assay(as Pb. mg/kg≤ 5
As (as As, mg/kg)≤ 2