Product Description

Zinc Hydrogen Phosphate (ZnHPO₄) is a high-performance inorganic phosphate widely used as a corrosion inhibitor and functional additive in industrial coatings, metal pretreatment, and specialty chemical formulations. It forms a stable phosphate conversion layer on metal surfaces, significantly improving corrosion resistance, paint adhesion, and long-term durability.
The product is typically supplied as a white, free-flowing crystalline powder with high chemical stability and low impurity levels. It is suitable for use in protective coatings, phosphating systems, pigments, and advanced materials.

Chemical & Physical Properties

• Chemical Formula: ZnHPO₄

• Molecular Weight: 161.37 g/mol

• Appearance: White crystalline powder

• Solubility: Slightly soluble in water; insoluble in alcohol

• pH (10% suspension): 5.5–7.0

• Density: ~3.0 g/cm³

• Melting Point: Decomposes on heating

• Stability: Stable under normal storage conditions

• CAS Number: 13598-33-3

• EC Number: 237-003-9

Specifications (Typical values, customizable per order)

Available Grades:

• Industrial Grade

• Coating Grade (Anti-Corrosive Pigment Grade)

• Surface Treatment Grade

Applications

1. Corrosion Inhibitor for Coatings

• Used in anti-corrosive coatings, primers, and protective paints

• Enhances long-term corrosion protection for steel, iron, and aluminum

• Improves coating adhesion and resistance to chemical degradation

2. Metal Surface Treatment

• Additive in phosphating baths and metal pretreatment formulations

• Promotes formation of a stable zinc phosphate conversion layer

• Increases paint adhesion and improves coating durability

3. Functional Pigment / Filler

• Acts as a white anti-corrosion pigment

• Provides excellent chemical resistance and structural reinforcement to coating systems

4. Specialty & Industrial Chemicals

• Used in ceramics, catalysts, inorganic synthesis, and advanced material applications

Note: Zinc Hydrogen Phosphate is not used in food or feed applications.

Advantages

• Excellent Corrosion Inhibition – Effective long-term protection for metal substrates

• High Purity & Low Impurities – Suitable for high-performance coating systems

• Stable Performance – Chemically stable and compatible with various resin systems

• Customizable Particle Size – Enhances dispersion and film formation in coatings

• Environmentally Friendly Alternative – Zinc phosphates are widely accepted as safer anti-corrosive pigments compared to heavy-metal-based options

• Versatile Industrial Application – Suitable for coatings, surface treatment, and material engineering

Packaging & Storage

Packaging:

• 25 kg woven bags with PE liner

• 25 kg kraft paper bags

• 500–1000 kg jumbo bags

• Custom packaging available upon request

Storage:

• Store in a cool, dry, well-ventilated area

• Keep away from moisture and incompatible substances

• Avoid heat, acids, and strong oxidizers

• Keep bags tightly closed to prevent moisture absorption

Shelf Life: 24 months under proper storage conditions.

Regulatory Status

• CAS: 13598-33-3

• EC Number: 237-003-9

• HS Code: 2835.39

• Classified as a non-food, industrial-grade chemical

• Compliant with international chemical regulations (REACH preregistration available upon request)

• Not listed as a food additive or feed additive

• Packaging and transport typically follow non-hazardous goods requirements (confirm per local regulations)

Why Choose Jiangsu Khonor Chemicals Co., Limited?

• ①Over 10 years of experience in chemical and food ingredient exports

• ②Stable supply capacity and competitive pricing

• ③Support for diverse molecular weights and performance requirements

• ④Samples available for quality testing

• ⑤Professional documentation: COA, MSDS, TDS, and export compliance

• ⑥Strong focus on global B2B markets

• ⑦Fast delivery and flexible logistics solutions

Ordering Information

For quotations, specifications, samples, or technical support, please contact:

Jiangsu Khonor Chemicals Co., Limited

Professional Chemical Supplier & Global Exporter

📧 Email: mengling@khonorchem.com

📞 Tel/WhatsApp/WeChat: +86-19851820586

🌏 WhatsApp：https://wa.me/8619851820586