Zinc (2-Ethylhexyl) Acid Phosphate (Zinc Octyl Acid Phosphate, CAS:68954-79-0,EINECS:257-665-7, molecular formula C₈H₁₉O₅PZn, MW:291.58) is a pale yellow to amber transparent viscous liquid produced via esterification reaction of 2-ethylhexanol with phosphorus pentoxide followed by neutralization with zinc oxide. Our industrial grade product features ≥95.0% minimum purity with strictly controlled acidity and moisture content. It exhibits excellent oil solubility, extreme pressure (EP) performance, anti-wear properties and corrosion inhibition ability. As a high-performance organophosphate additive, it is widely used in lubricating oils, metalworking fluids and industrial coatings to enhance load-carrying capacity and protect metal surfaces from wear and corrosion.
| Items | Specifications |
| Appearance | Light Yellow Paste (Solid at Low Temperature) |
| Active Content | 98% Min |
| Acid Value (mgKOH/g) | 180-220 |
| Free Alcohol | ≤3.0% |
| pH Value (1% Dispersion) | 6.0-8.0 |
| Moisture | ≤1.0% |
Applications
Lubricant Industry (Core Application)
Extreme pressure and anti-wear additive for gear oils, hydraulic oils and transmission fluids
Improves load-carrying capacity and reduces friction and wear under high-pressure conditions
Enhances thermal stability and oxidation resistance of lubricating oils
Metalworking Fluids Industry
Key component in cutting oils, grinding fluids and metal forming lubricants
Provides excellent anti-wear and anti-seize properties during metal machining operations
Inhibits corrosion of metal workpieces and machine tools
Coatings & Adhesives Industry
Corrosion inhibitor for industrial coatings and anti-corrosion paints
Adhesion promoter for coatings on metal surfaces
Catalyst for curing of certain resin systems
Other Industrial Applications
Rust preventive additive for temporary metal protection
Fluxing agent in soldering and brazing operations
Intermediate for producing other organophosphate chemicals
Product Advantages
✅ Excellent extreme pressure and anti-wear performance: Significantly reduces metal-to-metal contact and extends equipment service life
✅ Superior corrosion inhibition: Forms a protective film on metal surfaces to prevent rust and corrosion
✅ Good oil solubility: Fully compatible with most mineral oils and synthetic lubricant base stocks
✅ Low volatility: Minimizes evaporation loss at high operating temperatures
✅ Stable chemical properties: Resists hydrolysis and oxidation under normal operating conditions
✅ Strict quality control: Batch-by-batch testing ensures consistent performance between shipments
✅ Large-scale production capacity: Stable supply to support bulk orders and long-term contracts
Packaging & Storage
Standard packaging: 200kg UN certified steel drums; 1000kg IBC tanks available for bulk orders. Store in a cool, dry and well-ventilated warehouse away from direct sunlight, heat sources and strong oxidizing agents. Keep containers tightly sealed to prevent moisture absorption and contamination. Shelf life is 12 months under proper storage conditions.
Safety Information
Classified as UN 1993, Class 3 (Flammable Liquid), Packing Group III for international transportation. Combustible liquid; vapors may form explosive mixtures with air at high temperatures. Irritating to skin, eyes and respiratory tract. Operators must wear chemical-resistant gloves, goggles and protective clothing during handling. In case of skin/eye contact, rinse immediately with copious amounts of water for at least 15 minutes and seek medical attention if symptoms persist. Complete MSDS with emergency response procedures is provided with each shipment.
With 15 years of experience in chemical foreign trade, we offer the following core strengths to support your procurement needs:
- 1.A 70,000 ㎡ warehouse (20,000 MT capacity) with moisture-proof and temperature-controlled systems, enabling efficient fulfillment of large-volume orders.
- 2.Free samples (Ship within 3-7 days) to let you test products at zero trial cost.
- 3.Transparent lead time for hazardous chemicals: 45–60 days, with clear delivery schedules.
- 4.Certified with a Hazardous Chemical Business License and ISO certification, ensuring smooth customs clearance.
- 5.6 packaging options with customizable logos to minimize product loss during transportation.
- 6.Over 400 chemical SKUs available for one-stop procurement, helping you reduce sourcing costs.
Please share your purchase volume, target market, and other requirements, and we will tailor a customized solution for you!
