Hanson Chemicals

Zinc Chloride

Formula: ZnCl₂
CAS Number: 7646-85-7
EC Number (EINECS): 231-592-0
HS Code: 28273930
UN Number: 2331
IUPAC Name: Zinc Dichloride
Also Known As: Butter of Zinc; Zinc(II) Chloride
Molecular Weight, g/mol: 136.30

Typical Specifications

Appearance: White crystalline solid / powder
Odor: Odorless
Melting Point, °C: 290 (decomposes)
Boiling Point, °C: Sublimes at 732
pH (1% solution): ~4.0
Purity, %: 98–99.5
Grades Available: Industrial, Battery, Laboratory, Anhydrous
Packaging: 25kg bags, 50kg drums, bulk

Applications / Uses

Primary Applications

  • Used in fluxes for soldering, galvanizing, and tinning

  • Catalyst in organic synthesis and polymerization reactions

  • Manufacture of textile finishing and printing products

Secondary Applications

  • Ingredient in disinfectants and deodorants

  • Oilfield chemical (well completion, packer fluids)

  • Wood preservative and fireproofing agent

  • Used in batteries (dry cells, electrolytes)

End Industries Served: Chemicals, Pharmaceuticals, Textiles, Oil & Gas, Metallurgy, Wood Treatment, Batteries

Safety & Handling Information

Hazard Class (GHS): Corrosive to metals (Category 1), Acute Toxicity (Category 3, oral), Eye Damage (Category 1)

Hazard Statements (H-Codes):

  • H290: May be corrosive to metals

  • H301: Toxic if swallowed

  • H314: Causes severe skin burns and eye damage

  • H410: Very toxic to aquatic life with long-lasting effects

Precautionary Statements (P-Codes):

  • P280: Wear protective gloves/eye protection/face protection

  • P301 + P310: IF SWALLOWED – Immediately call a POISON CENTER/doctor

  • P305 + P351 + P338: IF IN EYES – rinse cautiously with water for several minutes, remove contact lenses if present

  • P273: Avoid release to the environment

Storage Conditions

  • Store in tightly closed containers in a dry, well-ventilated place

  • Protect from moisture (highly hygroscopic)

  • Keep away from incompatible substances (strong bases, oxidizers)

Transport Information

  • ADR/RID: Class 8, UN2331, PG III

  • IMDG: Class 8, UN2331, PG III

  • IATA: Class 8, UN2331, PG III

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