IOL Chemicals and Pharmaceuticals Limited manufacture Acetic Anhydride with Molecular Weight 102. IOL Chemicals and Pharmaceuticals Limited also manufacture and export various types of industrial chemicals and bulk drugs. The Acetic Anhydride with Molecular Weight 102 is used in manufacture of vinyl acetate monomer in the pharmaceutical industry. The Acetic Anhydride with Molecular Weight 102 is also used in the manufacture of pigments, dyes, cellulose and pesticides etc. This Acetic Anhydride is a colourless liquid with specific gravity 1.08. This Acetic Anhydride has boiling point of 139 Degree C.