Dibutyl phosphite CAS:1809-19-4
PSAIL T304 is an environmentally friendly, phenol-free high-performance phosphorus-based extreme pressure and anti-wear additive.
Read MorePSAIL T304 is an environmentally friendly, phenol-free high-performance phosphorus-based extreme pressure and anti-wear additive. It is insoluble in water but readily soluble in organic solvents such as esters, alcohols, and ethers. It is widely applied in industrial/vehicle gear oils, metalworking fluids (e.g., cutting oils, rolling fluids), and lubricating greases.
Product name: PSAIL T304
Chemical name: Dibutyl phosphite
Appearance: Colorless or light-yellow transparent liquid
Flash point open cup (℃): ≥100
Acid number (mgKOH/g): 7.46
Phosphorus content (%): 14.5-16.0
Dibutyl phosphite PSAIL T304 is an advanced, environmentally sustainable phosphorus‑based additive engineered to deliver superior extreme pressure (EP) and anti‑wear (AW) performance while meeting modern ecological requirements. As a phenol‑free formulation, T304 represents a safer alternative to conventional phosphorus additives, eliminating concerns about phenolic compounds in industrial and automotive applications. This high‑performance additive is chemically designed to be insoluble in aqueous systems but demonstrates excellent solubility in a wide range of organic solvents including esters, alcohols, and ethers, making it exceptionally versatile for various lubrication formulations.
Eco‑friendly & phenol‑free: Eco‑friendly phosphorus‑based additive without phenol ingredients, complying with strict environmental standards.
Excellent solubility: Colorless transparent liquid; highly soluble in esters, alcohols, ethers; insoluble in water.
Low volatility & good thermal stability: Low‑volatility property and outstanding thermal stability for high‑temperature working conditions.
High EP/AW performance: Delivers excellent load‑carrying capacity and friction reduction; produces obvious synergistic effect when compounded with sulfur‑based additives.
Multi‑auxiliary performance: Possesses extra flame‑retardant and antioxidant properties, improves system safety and extends fluid service life.
Good compatibility: Neutral pH, non‑corrosive, broadly compatible with multiple base oils and additive packages for industrial & automotive scenarios.
Extreme‑pressure & anti‑wear: Acts as EP/AW agent to avoid direct metal‑to‑metal contact under heavy load, lower friction and surface wear, form durable protective films for longer equipment service life.
Friction modification: Works as friction modifier to boost energy efficiency of mechanical assemblies.
Antioxidant & flame‑retardant: Inhibits oil oxidative degradation under high‑temperature environment; provides flame‑retardant effect for higher operational safety.
Auxiliary corrosion inhibition: Serves as secondary corrosion inhibitor and compatibility improver for complex lubricant formula systems.
Industrial and automotive gear oils, metalworking fluids (cutting, rolling, grinding oils), lubricating greases, flame‑retardant lubricants, specialty hydraulic fluids, high‑temperature greases.
Organic synthesis intermediate, gasoline additive and corrosion inhibitor. Suitable for heavy‑duty machinery, automotive transmissions, wind‑power equipment and metal‑processing industries.
The current price of Dibutyl phosphite PSAIL T304 may vary depending on numerous factors, including the supplier, quantity, and specific formulation requirements. For accurate and up‑to‑date pricing information, it is advisable to contact us directly for quotation.
Supplier of Dibutyl phosphite PSAIL T304: If you are looking for Dibutyl phosphite PSAIL T304 or want to know more about the technical information, please feel free to contact FansChem.
Q1: What is Dibutyl phosphite PSAIL T304?
A: PSAIL T304 is a phenol‑free, environmentally‑friendly phosphorus‑based lubricant additive. Its main component is dibutyl phosphite. It provides excellent extreme‑pressure and anti‑wear performance and can be applied in industrial and automotive lubricant formulations.
Q2: What are the key characteristics of PSAIL T304?
A: It is colorless transparent liquid, insoluble in water but well soluble in esters, alcohols and ethers. It has low volatility, good thermal stability, neutral pH and non‑corrosive property. It also has flame‑retardant and antioxidant auxiliary functions and synergizes well with sulfur‑containing additives. Please check official TDS for full physical‑chemical indexes.
Q3: What benefits can PSAIL T304 bring to lubricant formulations and what about its treat rate?
A: It offers EP / anti‑wear, friction‑modifying, antioxidation and flame‑retardant comprehensive performance. Exact treat level depends on finished‑product requirements. Lab compatibility test must be completed before formal blending.
Q4: What end‑use products can PSAIL T304 be used for?
A: It applies to gear oils, various metalworking fluids, greases, flame‑retardant lubricants, special hydraulic fluids. It can also be used as organic synthesis intermediate, gasoline additive and corrosion inhibitor for heavy machinery, auto transmission and wind turbine equipment.
Q5: What are packaging and storage suggestions for PSAIL T304?
A: Keep drums tightly sealed. Store inside cool, dry and well‑ventilated warehouse, avoid high‑temperature and sunlight exposure.
Q6: How to get TDS, SDS document and quotation of PSAIL T304?
A: Avoid skin‑eye direct contact and follow standard industrial operation specifications. Please get in touch with FansChem technical‑sales team for complete TDS, SDS and commercial quotation.
| Item | Content |
|---|---|
| Description | PSAIL T304 is an environmentally friendly, phenol‑free high‑performance phosphorus‑based extreme pressure and anti‑wear additive. It is insoluble in water but readily soluble in organic solvents such as esters, alcohols, and ethers. With a high extreme pressure and anti‑wear index, T304 exhibits excellent compatibility and is typically used in combination with organic sulfur additives to enhance the strength and toughness of protective films. It is widely applied in industrial/vehicle gear oils, metalworking fluids (e.g., cutting oils, rolling fluids), and lubricating greases. This additive also offers flame‑retardant and antioxidant properties, making it suitable for use as an organic synthesis intermediate, gasoline additive, and flame retardant. |
| Chemical name | Dibutyl phosphite |
| CAS No. | 1809‑19‑4 |
| Recommended treat level | 0.3 ~1.0% |
| Highlights | Eco‑friendly & phenol‑free, colorless transparent liquid; Highly soluble in organic solvents, low volatility; Excellent extreme pressure & anti‑wear performance, with additional flame‑retardant and antioxidant properties; can be used as an organic synthesis intermediate; Superior compatibility, blends well with various lubricant additives |
| Item | Specification |
|---|---|
| Appearance | Colorless or light‑yellow transparent liquid |
| Density (20℃, g/cm3) | 0.986 |
| Viscosity at 40℃, mm2/s | 1.78 |
| Flash point (open cup, ℃) | ≥100 |
| Acid number (mgKOH/g) | 7.46 |
| Phosphorus content (%) | 14.5‑16.0 |
| Copper corrosion at 100℃,3h | ≤1b |
| Packaging | 50kg plastic drum or 200kg steel drum (Net weight) |
| Handling information | For more information, please refer to the relevant MSDS. |
PSAIL T304 is an environmentally friendly, phenol-free high-performance phosphorus-based extreme pressure and anti-wear additive.
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