Zinc Acetate, Zinc Diacetate, 557‑34‑6

Zinc Acetate, Zinc Diacetate, 557‑34‑6

🔹 Chemical Profile

1. Identification

• Name: Zinc acetate

• Synonyms: Zinc diacetate, Acetic acid zinc salt

• CAS Number: 557‑34‑6

• EC Number: 209‑170‑2

• HS Code: 291529

2. Chemical Structure

• Molecular Formula: Zn(CH₃COO)₂

• Molecular Weight: 183.48 g/mol

• Form: Anhydrous or dihydrate (Zn(CH₃COO)₂·2H₂O)

3. Physical Properties

• Appearance: White crystalline powder (may appear yellowish to gray‑green depending on grade)

• Density: 1.84 g/mL at 25 °C

• Melting Point: 83–86 °C

• Boiling Point: ~908 °C

• Solubility: Soluble in water, alcohol, dilute mineral acids and alkalis

• Hygroscopic: Yes

4. Chemical Properties

• Reactivity: Stable under ambient conditions; reacts with strong oxidizers

• pKa: ~4.76 (weakly acidic)

• Nature: Salt of zinc and acetic acid

5. Applications

• Pharmaceuticals: Dietary zinc supplement; used in lozenges for common cold treatment

• Food industry: Approved additive (GRAS status in some jurisdictions)

• Textiles: Dyeing and printing fabrics

• Chemicals: Catalyst and intermediate in synthesis

• Topical use: Antimicrobial ointments and creams

6. Packaging & Logistics

• Forms: Powder or crystalline solid

• Storage: Room temperature, inert atmosphere; protect from moisture

• Transport Classification: Non‑hazardous (general chemical)

• Shelf Life: ~2 years under proper storage

7. Regulatory & Safety

• GHS Classification: Irritant

• CLP Labeling:

  • H315: Causes skin irritation

  • H319: Causes serious eye irritation

• FDA References: 21 CFR 175.105; 310.545; 582.8 (food contact and pharmaceutical uses)

• MSDS: Must be provided

8. Quality & Certification

• Available in trace metals grade (99.99% purity) for laboratory use

• ISO 9001 compliant production (depending on supplier)

• Food and pharma grades require GMP compliance

📊 Sectoral Compliance Table