Description

Zinc Chloride CAS Registry Number: ********7 Additional Names: Butter of zinc Molecular Formula: Cl2Zn Molecular Weight: **6.*2 Percent Composition: Cl *2.*1%, Zn *7.*8% Line Formula: ZnCl2 Literature References: Usually contains at least *5% ZnCl2; remainder is chiefly water and oxychloride. Toxicity: Bruner, Fed. Proc. 9, **0 (***0). Properties: White, odorless, very deliquesc granules, or fused pieces or rods. d*5 2.**7; mp ~**0°; bp **2°. Solubility in H2O: **2 g/**0 g (*5°); **4 g/**0 g (**0°). One gram dissolves in 0.*5 ml of 2% HCl, in 1.3 ml alcohol, 2 ml glycerol; freely sol in acetone. With much water some zinc oxychloride is formed. The aq soln is acid to litmus; pH about 4. Keep tightly closed. LD i.v. in rats: ****0 mg/kg (Bruner). Melting point: mp ~**0° Boiling point: bp **2° Density: d*5 2.**7 Toxicity data: LD i.v. in rats: ****0 mg/kg (Bruner) CAUTION: Potential symptoms of overexposure to fumes are conjunctivitis; irritation of skin, eyes, nose and throat; coughing, copious sputum; dyspnea, chest pain, pulmonary edema and bronchopneumonia; pulmonary fibrosis, cor pulmonale; fever; cyanosis; tachypnea; skin burns. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH *****0, ***7) p **8. Use: Deodorant, disinfecting and embalming material; alone or with phenol and other antiseptics for preserving railway ties; fireproofing lumber; with ammonium chloride as flux for soldering; etching metals; manuf parchment paper, artificial silk, dyes, activated carbon, cold-water glues, vulcanized fiber; browning steel, galvanizing iron, copper-plating iron; in magnesia cements; petroleum oil refining; cement for metals and for facing stone; mordant in printing and dyeing textiles; carbonizing woolen goods; producing crepe and crimping fabrics; mercerizing cotton; sizing and weighting fabrics; vulcanizing rubber; solvent for cellulose; preserving anatomical specimens; in microscopy for separating silk, wool, and plant fibers;