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.
Composition/Purity
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)