... acid for rubber industry 2,Manufacturers white transparent crystal combining two crystal water. melting point: 101-102. specific gravity: 1.653, oxalic ... precipitating and separating function for Rare-earth metal.2.in light industry: polishing for marble, rust-remover, bleaching ... textile, substitute for acetic acid, as coloring mordant for fast pigment dyestuff4.in electron industry: preparation of ...