Vijaychem Industries

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Zinc Chloride - Description

Appearance and Odor
White odorless, GRANULAR crystals or crystalline powder; deliquescent (absorbs moisture from the air and forms wet solid or solution).(15)
Odor Threshold
Not applicable
Warning Properties
Information not available for evaluation.
Zinc chloride is sold as 47.4 and 62.5 wt % water solutions and is also produced in solid form as an anhydrous crystalline salt, granules or as a solid in fused form.(16,19) In solid form, zinc chloride is commercially available in different grades with purity from 95-99.999% (ultra-dry). The impurities present include iron and manganese, water and zinc oxychloride.(14,16) It is also available as a 0.5 molar solution in tetrahydrofuran and 1 molar solution in diethyl ether.(31) The term zinc chloride fume or zinc chloride smoke is often used to refer to the mixture of airborne chemicals produced by a type of smoke bomb used in firefighting exercises, crowd dispersal and as a screening smoke in the military. This airborne smoke is produced by igniting a mixture of zinc oxide and hexachloroethane. Please note that the hazards of this smoke are not addressed in this CHEMINFO review.
Uses and Occurrences
Zinc chloride is used in carbon-zinc batteries; as a galvanizing flux; in zinc electroplating; as a wood and textile preservative; as a catalyst, and dehydrating and condensing agent in organic synthesis; as a desiccant; as a catalyst in the manufacture of polyester-polyether resins and in coal liquefaction; in glues and adhesives; as an astringent in cosmetics; in burnishing and polishing compounds for steel; in embalming and taxidermy fluids; in rubber vulcanization; in oil refining; in fireproofing; in glass etching; in petroleum drilling fluids; in coal cleaning; in mercerizing cotton; in sizing and weighting fabrics; in swelling fibres; as a mordant in dyeing; in the manufacture of parchment paper; as a resist for sulfur colors, albumin colors, and para red; as a solvent for the co-polymerization of acrylonitrile; as a herbicide; as a treatment against animal pathogenic bacteria in toilet bowls and urinals; as a bacteriostat; and in the manufacture of ion-exchange resins.(15,16,19)
In medicine, zinc chloride is used in antiseptic and deodorant preparations (up to 2% solution), disinfectants; and in dental cements.(19)
Zinc chloride is a primary ingredient in smoke used for crowd dispersal, in firefighting exercises, and by the military forces for screening purposes.(32)