Zinc chloride ( ZnCl2 ) - 100g

Zinc Chloride
Sum Formula: ZnCl₂
Molar Mass: 136.28 g/mol
CAS Number: 7646-85-7
EC Number: 231-592-0

Appearance: White, hygroscopic crystalline solid

Zinc chloride is an inorganic salt composed of zinc and chlorine. It is a colorless to white solid that is highly soluble in water and demonstrates strong hygroscopic properties, readily absorbing moisture from the air. It is typically prepared by reacting zinc metal with chlorine gas or by dissolving zinc oxide in hydrochloric acid.

Identified Uses

Used in industrial processes, laboratories, and chemical analysis.

Applications

Soldering and Welding: Functions as a fluxing agent that removes oxide layers from metal surfaces and promotes better adhesion during metal joining.

Textile Industry: Applied in fabric flameproofing treatments and as a mordant in dyeing processes.

Chemical Synthesis: Used as a Lewis acid catalyst or reagent in organic and inorganic reactions.

Water Treatment: Involved in purification and chemical conditioning processes.

Wood Preservation: Protects timber from rot and microbial degradation.

Battery Industry: Used in the manufacture of dry cell batteries.

Metal Processing: Applied in galvanizing to prevent corrosion on metal surfaces such as steel.

Chemical and Physical Properties

• Density: ~2.91 g/cm³

• Melting Point: 290°C (with decomposition)

• Boiling Point: Sublimes at ~732°C

• Solubility in Water: Very soluble (432 g/L at 25°C)

• Solubility in Other Solvents: Soluble in ethanol, acetone, glycerol

• Odor: Odorless

Safety

Signal Word: Danger

Hazard Statements:

• H302: Harmful if swallowed

• H314: Causes severe skin burns and eye damage

• H335: May cause respiratory irritation

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

Precautionary Statements:

• P260: Do not breathe dust

• P273: Avoid release to the environment

• P280: Wear protective gloves, protective clothing, and eye/face protection

• P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor if you feel unwell

• P303+P361+P353: IF ON SKIN (or hair): Remove contaminated clothing. Rinse skin with water/shower

• P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing

First Aid Measures

Eye Contact: Rinse cautiously with water for several minutes. Seek immediate medical attention.
Skin Contact: Rinse skin with water. Remove contaminated clothing. Seek medical help if irritation or burns occur.
Inhalation: Remove person to fresh air. Seek medical attention if respiratory symptoms appear.
Ingestion: Rinse mouth. Do not induce vomiting. Seek immediate medical assistance.

Handling and Storage

Storage Conditions: Store in tightly sealed containers in a cool, dry, and well-ventilated area. Protect from moisture to avoid clumping.
Handling Precautions: Avoid contact with skin, eyes, and clothing. Prevent dust formation. Use appropriate personal protective equipment (PPE).