Specifications CAS Number 64-67-5 Molecular Formula(C2H5)2SO4 Molecular Weight 154.18 Description A clear colorless, odourless liquid. Assay 99.8% (min). Free Acidity 0.1 % w/w (max) Moisture by KF 0.1 % w/w max Specific gravity 1.176- 1.182 Colour on APHA max 25 Boiling Point 208 C with decomposition. Soluble Alcohol and Ether. Freezing Point-24.5 oC Flash Point121 oC (open cup)