oyster shell powder

Appearance: White powder Molecular formula: CaCO3 Molecular weight:100.09 Product specification: Statutory No: CAS 471-34-1 GB*-90（No.16.205） Item Index（QB 1413?1999） CaCO3 (dry basis),% ≥ 97.60 Loss on drying,% ≤ 1.0 Acid-insoluble substances,% ≤ 0.30 Barium，% ≤ 0.030 Arsenic（As）， mg/kg ≤ 3 Heavy Metals （Pb），mg/kg ≤ 10 Cadmium(Cd), mg/kg ≤ 0.2 Fineness, mesh ≥ 180 Packaging and storage: 25kg/complex paper bag, or according to order. Preserve in well-closed containers.

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