... 002% max Chloride (Cl): 0.005% maxUses: Pharmaceutical industrial, precipitating agent of rare earth elements, bleaching, metal and ... marble polish, cleanser removing stains, tanning industrial, printing and dyeing catalytic agent, anti-shrinkage finishing of ... place below 40°C, avoild moisture & water, separate from alkaline matter, don't touch with food. Industrial oxalic acid 99 6 ...