Calamine

Name:
Calamine
Detailed information:
(1) A hydrated zinc silicate containing 67.5% zinc oxide; d 3.5, Mohs hardness 4.5 to 5. Pyroelectric. Occurs in U.S. and Europe. Source of metallic zinc. (2) Zinc oxide with low percentage of ferric oxide; zinc oxide must be 98%. Soluble in mineral acids, insoluble in water. Pharmaceutical preparation (USP).