Calcium sulfate dihydrate CAS NO.10101-41-4

Test item	Specification
Test item	Reagent grade	Pharmaceutical grade
Appearance	Conform	Conform
Assay /%	≥99.0	≥97.0
Clarify degrees test	Conform	Conform
Hydrochloric acid insoluble, /%	≤0.025	≤0.05
Chloride (Cl)/%	≤0.002	≤0.005
Nitrate (NO3)/%	≤0.002	≤0.005
Ammonium salt (NH4)/%	≤0.005	≤0.015
Carbonate (CO3)/%	≤0.05	≤0.1
Ferric (Fe)/%	≤0.0005	≤0.001
Heavy metal (Pb)/%	≤0.001	≤0.002
Alkali metal magnesium and (MgO)/%	≤0.2	≤0.5

Analytics reagents, also used in water treatment, papermaking, printing, dyeing, metallurgy and coating, adhesive production