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Zinc Butyl-Octyl Primary Alkyl Dithiophosphate (ZDDP)
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Zinc Butyl-Octyl Primary Alkyl Dithiophosphate (ZDDP) Manufacturer
Cas number68649-42-3
Description：
High-performance Zinc Butyl-Octyl Primary Alkyl Dithiophosphate (ZDDP) manufacturer. Premium anti-wear, antioxidant, and anti-corrosion additive for engine and hydraulic oils. CAS 68649-42-3
Category：
Antiwear (AW) Additives&ZDDP
Product Details
Zinc Butyl-Octyl Primary Alkyl Dithiophosphate (ZDDP)
As a leading manufacturer and B2B supplier, Chemost provides high-purity Zinc Butyl-Octyl Primary Alkyl Dithiophosphate. Widely recognized in the industry by acronyms such as ZDDP, ZDTP, or ZnDTP, this multifunctional component is the "gold standard" for wear protection and oxidation control in high-performance lubricants.
Chemical Identification & Profile
Zinc Butyl-Octyl Primary Alkyl Dithiophosphate is a Primary Alkyl type ZDDP. Compared to secondary alkyl versions, primary ZDDPs offer superior thermal stability and better anti-corrosion properties, making them indispensable for high-temperature industrial applications and engine oil formulations.
- Chemical Name: Zinc Butyl-Octyl Primary Alkyl Dithiophosphate
- CAS Number: 68649-42-3 (or 191045-37-1)
- Chemical Family: Zinc Dialkyl Dithiophosphate
- Molecular Weight: Variable (approx. 650 - 750 g/mol)
Multifunctional Performance
ZDDP is one of the most cost-effective and versatile additives in the lubricant chemist's toolkit. It serves three primary functions:
- Anti-wear (AW): Formulates a protective polyphosphate film on metal surfaces to prevent metal-to-metal contact.
- Antioxidant: Decomposes hydroperoxides and terminates free-radical chains to prevent oil thickening and sludge formation.
- Corrosion Inhibition: Protects bearings and metal surfaces from acidic combustion by-products.
Technical Specifications
Our production process ensures a balanced Zinc and Phosphorus ratio for maximum film-forming efficiency.
Property | Typical Value | Test Method |
|---|---|---|
Appearance | Light Transparent Liquid | Visual |
Zinc Content (wt%) | 8.5 - 10.5 | ASTM D4951 |
Phosphorus Content (wt%) | 7.5 - 9.0 | ASTM D4951 |
Sulfur Content (wt%) | 15.0 - 18.0 | ASTM D4294 |
Flash Point (PMCC) °C | > 160 | ASTM D93 |
Density @ 20°C (g/cm³) | 1.08 - 1.13 | ASTM D1298 |
Water Content (wt%) | < 0.05 | ASTM D95 |
Application & Formulation Guidance
Zinc Butyl-Octyl Primary Alkyl Dithiophosphate is a core component for both automotive and industrial sectors.
Key Application Areas:
Internal Combustion Engine Oils: A fundamental anti-wear agent for passenger car and heavy-duty diesel engines.
Hydraulic Fluids: Provides critical protection for high-pressure vanes and piston pumps.
Industrial Gear Oils: Enhances load-carrying capacity in various industrial machinery.
Synergistic Blending:
For high-performance formulations, ZDDP is typically blended with:
Ashless Dispersants (PIBSI): To maintain engine cleanliness.
Phenolic/Aminic Antioxidants: To provide a dual-layer defense against oil oxidation.
Metal Deactivators: To ensure compatibility with yellow metals in hydraulic systems.
Detergents (Calcium Sulfonates): To manage acidity while ZDDP manages wear.
Why Source from Chemost?
Technical Expertise: We offer both Primary and Secondary Alkyl ZDDPs, allowing you to choose the exact thermal stability/anti-wear balance for your climate and application.
B2B Supply Stability: As a factory-direct supplier, we offer consistent batch quality and competitive pricing for wholesalers.
Full Documentation Package: We simplify your compliance process by providing:
- TDS (Technical Data Sheet)
- MSDS/SDS (Safety Data Sheet)
- COA (Certificate of Analysis) for every shipment.
Frequently Asked Questions (FAQ)
Q: What is the main advantage of Primary Alkyl ZDDP over Secondary Alkyl ZDDP?
A: Primary ZDDP (like our Butyl-Octyl grade) has higher thermal stability. It starts to decompose and form a protective film at higher temperatures compared to Secondary ZDDP, making it ideal for lubricants that operate under sustained high heat.
Q: Is this product compatible with all base oils?
A: Yes, our ZDDP shows excellent solubility in Group I, II, III mineral oils and Group IV (PAO) synthetic base stocks.
Q: What is the recommended treat rate?
A: In typical hydraulic oils, treat rates range from 0.4% to 0.8%. For engine oils, it is generally used between 0.6% and 1.5% depending on the API performance level required.
Q: Can you provide bulk shipments?
A: We supply in 200L steel drums and 1000L IBC tanks. Bulk ISO tank deliveries can be arranged for long-term contract partners.
Why Choose Us
We believe that as long as we provide high-quality services to our customers, CheMost Additives CO., LTD's products will always gain the trust and support of our customers and have a stable market.
Our factory
We have over 20 professional chemical reactor,the annual production capacity of the products can reach 20,000 tons, while ensuring quality, we can provide stable and continuous supply.
Our warehouse
We are well aware that for the stable supply of chemical products, storage is the foundation. In the face of the ever-changing global market environment, a sustainable storage capacity is of vital importance.
Our laboratory
Long-term cooperation cannot be achieved without stable product quality. Under the supervision of over 20 pieces of testing equipment and 70 tests, the quality of the products is qualified and stable.
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Key word：
Zinc Butyl-Octyl Primary Alkyl Dithiophosphate
CAS 68649-42-3
anti-wear additive supplier
ZDTP manufacturer
primary alkyl ZDDP
hydraulic oil additives
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