Zinc Chloride

Industrial Grade · Technical Grade — Bulk supply across India & International Markets

What is Zinc Chloride?

Zinc Chloride (ZnCl₂) is a white crystalline solid that is highly soluble in water, alcohol, and glycerol. It is one of the most important zinc compounds in industrial use, known for its strong hygroscopic nature and excellent fluxing properties. It is produced by the reaction of zinc with hydrochloric acid or by the roasting of zinc sulfide.

Polychem Industries supplies Zinc Chloride in industrial and technical grades to manufacturers across India and internationally. Its wide range of applications — from galvanising and soldering to textile treatment and water purification — makes it one of the most versatile industrial chemicals in our catalog.

Available Grades

Grade Form Purity Standard Applications
Industrial Grade White Powder / Granules ≥ 96% Industrial Galvanising, flux, textile processing
Technical Grade Powder / Solution ≥ 98% Technical Chemical synthesis, laboratory, electronics

Applications & Uses

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Metal Processing & Galvanising

Used extensively as a flux in hot-dip galvanising of steel and iron to remove oxides from metal surfaces and ensure proper zinc coating adhesion.

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Soldering & Welding Flux

A primary ingredient in soldering fluxes used in electronics, plumbing, and metalwork. It cleans metal surfaces and prevents oxidation during soldering.

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Textile & Fibre Processing

Used in the textile industry as a mordant for dyeing, in the manufacture of viscose rayon, and for fireproofing and waterproofing of fabrics.

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Wood Preservation

Used as a wood preservative and fire retardant. Applied to timber to protect against fungal decay, insects, and fire in construction applications.

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Batteries & Electronics

Used as an electrolyte in dry cell batteries and in the manufacture of printed circuit boards and electronic components.

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Water Treatment

Applied in industrial water treatment processes as a coagulant and in the control of hydrogen sulphide in sewage treatment systems.

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Chemical Synthesis

Used as a Lewis acid catalyst in organic chemistry for Friedel-Crafts reactions and various other chemical synthesis processes.

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Construction & Adhesives

Used in the production of zinc cement, as a component in dental cements, and as an activator in rubber vulcanisation processes.

Technical Specifications

Zinc Chloride — Key Properties

Chemical Formula ZnCl₂
Molecular Weight 136.29 g/mol
Appearance White crystalline powder / granules
Purity ≥ 96% (Industrial) / ≥ 98% (Technical)
Solubility in Water Highly soluble — 432 g/100 mL at 25°C
Melting Point 290°C
Boiling Point 732°C
pH (5% Solution) 4.0 – 5.0
Packaging Available 25 kg bags / 50 kg bags / Bulk
Storage Store in dry, cool, well-ventilated place. Keep tightly sealed — highly hygroscopic.

Why Source Zinc Chloride from Polychem Industries?

  • Industrial and Technical grades available for all application requirements
  • Consistent quality with Certificate of Analysis (COA) available on request
  • Bulk supply capability for large manufacturing requirements
  • Export documentation experience for international shipments
  • Competitive pricing with reliable availability year-round
  • 25+ years of experience supplying industrial chemicals across India

Frequently Asked Questions

What is Zinc Chloride mainly used for in industry?
Zinc Chloride is primarily used as a flux in galvanising and soldering, in textile processing as a mordant, in wood preservation, in battery electrolytes, and as a Lewis acid catalyst in chemical synthesis. It is one of the most versatile industrial zinc compounds available.
Is Zinc Chloride the same as zinc flux?
Zinc Chloride is the primary active ingredient in zinc-based soldering and galvanising fluxes. When used as a flux, it is often supplied as a solution or paste. The industrial grade ZnCl₂ powder is dissolved and used directly in these applications.
What precautions should be taken when handling Zinc Chloride?
Zinc Chloride is corrosive and should be handled with appropriate PPE including gloves, goggles, and protective clothing. It should be stored in a dry, sealed container as it is highly hygroscopic and will absorb moisture from the air. Avoid contact with skin and eyes.
Do you supply Zinc Chloride in solution form?
Please contact our team to discuss solution concentrations and availability. We primarily supply Zinc Chloride in powder and granule form but can advise on solution requirements based on your application.
Do you export Zinc Chloride outside India?
Yes. We export Zinc Chloride to Bangladesh, Sri Lanka, Nepal, Bhutan, and South Africa with full export documentation including COA, MSDS, and packing list. Contact us for export pricing and lead times.

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