Sodium Disulfite (USP-NF, BP, Ph. Eur.) pure, pharma grade

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Sodium Disulfite (USP-NF, BP, Ph. Eur.) pure, pharma grade
Content: 5 KGM
Physical Description:
solid
Quality Name: pure, pharma grade
Specification: Assay (as SO2) (Iodom.)@65.0-67.4 %§Assay (Na2S2O5) (Iodom.)@96.5-100.0%§Identity according to Pharmacopoeias:@passes test§pH of 5% solution@3.5-5.0§CHAR(13) + CHAR(10) Maximum limit of impurities@§Appearance of solution@passes test§Insoluble matter in H2O@0.025 %§Chloride (Cl)@0.02%§Residual solvents (Ph.Eur/USP)@passes test§Thiosulfate (BP)@passes test§Thiosulfate (S2O3)@0.05%§Fe@0.002 %