We are offering oyster shell powder. appearance: white powder molecular formula: caco3 molecular weight:100.09product specification: statutory no: cas 471-34-1 gb12493-90((no.16.205)item index(qb 14131999)caco3 (dry basis), % 97.60loss on drying, % 1.0acid-insoluble substances, % 0.30barium, % 0.030arsenic(as), mg/kg 3heavy metals (pb), mg/kg 10cadmium(cd), mg/kg 0.2fineness, mesh 180packaging and storage:25kg/complex paper bag, or according to order. Preserve in well-closed containers.
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