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1. Oxalic acid

CAS No.: 144-62-7

UN No.: 3261

Molecular Formula: C2H2O4

Molecular weight: 90.03

Appearance: Odorless transparent colorless crystals.

2. glacial acetic acid

Usage: In the manufacture of acetic anhydride,cellulose acetate,vinyl
acetate monomer, acetic estersand chloroacetic acid.In the manufacture
of pharmaceutical dyes,insecticides,photographic chemicals and as an
acidulant and food preservative ...

3. formic acid

Usage:
Medicine Industry : making Amidopyrin,vitamin B and many
other medicines in medicine industry;used in producing
methanamide,diethyl form amide,rubber age resister,dying
and so on