... of Origin Hunan, China (Mainland) Barium Carbonate Purity: 99% Hazard Class: 6.1 UN/NA: UN1564 Packing Group: III Barium CarbonateUses ... sieve %≤1Fineness:floury 150μm residue on test sieve %≥75Cautions: 1, inorganic toxic chemicals, hazardous code 83004, kept in dry place ... poisoning. 3, no mix with acids and foods.Our Advantages:1. strong production capacity: about 1000 tons per month2. highest purity ...