Cadmium Acetate
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
C4H6CdO4· 2H2O 266.53 CAS RN: 5743-04-4. (USP 1-Dec-2022) —Colorless, transparent to translucent crystals. Freely soluble in water; soluble in alcohol.
INSOLUBLE MATTER (Reagent test): NMT 1 mg, from 20 g (0.005%)
CHLORIDE (Reagent test): 1 g shows NMT 0.01 mg of Cl (0.001%)
SULFATE (Reagent test, Method II): Dissolve 10 g in 100 mL of water, add 1 mL of hydrochloric acid, and filter: the residue weighs NMT 1.2 mg more than the residue obtained in a complete blank test (0.005%).
SUBSTANCES NOT PRECIPITATED BY HYDROGEN SULFIDE: Dissolve 2 g in a mixture of 135 mL of water and 15 mL of 1 N sulfuric acid, heat to boiling, and pass a rapid stream of hydrogen sulfide through the solution as it cools. Filter, and to 75 mL of the clear filtrate add 0.25 mL of sulfuric acid, then evaporate to dryness, and ignite gently: the residue weighs NMT 1 mg (0.1%).
