Zinc phosphate

Zinc phosphate

Trizinc diphosphate; Zinc orthophosphate

CAS 7779-90-0

Chemical Formula Zn₃(PO₄)₂

Molecular Weight 386.11 g/mol

Zinc phosphate is a white, powdery compound commonly used as a corrosion-resistant coating on metal surfaces. It serves as a primer pigment in paints and coatings, especially in the automotive and construction industries, helping to protect metal from rust and degradation. Additionally, it is used in dental cements and as a corrosion inhibitor in various.

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Industrial Uses

1. Paints, Coatings & Adhesive 

  • Corrosion inhibitor: Zinc phosphate forms a passive protective layer on metal surfaces that prevents moisture and oxygen from reaching the metal.
  • Anti-rust pigment: Replaces toxic lead-based pigments in primers and coatings.
  • Long-lasting protection: Provides long-term defense against rust, especially in marine, industrial, and outdoor environments.
  • Environmentally friendly: A safer alternative to chromium- and lead-based pigments.

2. Metal Treatment

  • Conversion coating: Forms an inert phosphate layer that chemically bonds to the metal, improving paint adhesion and corrosion resistance.
  • Base for organic coatings: Enhances durability of paints and finishes applied to metal parts.

3. Construction

  • Concrete reinforcement: Applied to steel rebar to reduce corrosion within concrete structures.
  • Protective coatings for bridges and structures: Used in infrastructure that is exposed to moisture, salt, and environmental stress.

4. Pharmaceuticals

  • Dental cement: Used for permanent and temporary fixation of crowns, bridges, inlays, and orthodontic appliances.
  • Low solubility and good compressive strength: Makes it suitable for long-term dental applications.

5. Lubricant & Automobiles

  • Priming and protective layers: Applied to chassis, body panels, and structural components.
  • Weight-efficient protection: Critical in aerospace applications where lightweight rust protection is needed.

Specifications

Assay Typically ≥ 98%
Appearance White powder
Odor Odorless
Boiling Point Not applicable (decomposes before boiling)
Melting Point >900 °C (decomposes)
Density ~3.998 g/cm³
Solubility Insoluble in water; soluble in acids
Viscosity Not applicable (solid)
Flash Point Not applicable (non-flammable solid)

Hazard Symbols

Irritants/Sensitisers/Other Hazards
Environmental Hazard

FAQs

1. What is the current price of Zinc phosphate in India?
The price Zinc phosphate can vary based on factors such as purity, quantity, etc. For the most accurate and competitive pricing, please contact us at +91.979 979 2121 directly for a customized quote tailored to your needs.

2. Where can I buy Zinc phosphate in India?
You can purchase Zinc phosphate from MULTICHEM, a leading importer with a reputation for quality and reliability. We provide convenient options for bulk orders and direct shipments across India. For more details on how to place an order, please visit our website or contact our sales team.

3. What is the minimum order quantity (MOQ) for Zinc phosphate?
Our minimum order quantity (MOQ) Zinc phosphate is designed to cater to both small-scale and large-scale needs. The MOQ depends on the packing size of the product which could range from 25 kg to 250kg.

4. How can I ensure the quality of Zinc phosphate supplied by Multichem ?                      
We adhere to stringent quality control processes to ensure that our products meet the highest standards of purity and effectiveness. They undergo rigorous testing and quality checks to guarantee that they comply with industry specifications. We provide a Certificate of Analysis (CoA) with every shipment to ensure transparency and quality assurance.