EP/AW Additives
Dibutyl phosphite T304
CAS No. 1809-19-4
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. 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
Description
What is Dibutyl phosphite PSAIL T304?
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.
Features of Dibutyl phosphite PSAIL T304:
PSAIL T304 is an eco-friendly, phenol-free phosphorus-based additive that offers superior extreme pressure (EP) and anti-wear (AW) performance in a colorless, transparent liquid form. Highly soluble in organic solvents such as esters, alcohols, and ethers, it exhibits low volatility and excellent thermal stability. The additive delivers outstanding load-carrying capacity and friction reduction, with synergistic effects when combined with sulfur-based additives to enhance protective film strength. Beyond lubrication performance, T304 provides additional flame-retardant and antioxidant properties, improving safety and extending fluid service life. Its broad compatibility with various base oils and additive systems, neutral pH, and non-corrosive nature make it suitable for diverse industrial and automotive applications. The formulation meets stringent environmental standards while maintaining high performance in demanding operating conditions.
Functions of Dibutyl phosphite PSAIL T304:
PSAIL T304 serves as a multifunctional additive engineered to enhance lubrication performance across demanding applications. Its primary function as an extreme pressure (EP) and anti-wear (AW) agent prevents metal-to-metal contact under high loads, significantly reducing friction and surface wear. The additive actively forms durable protective films on metal surfaces, improving equipment longevity and operational efficiency. Additionally, T304 functions as a friction modifier, optimizing energy efficiency in mechanical systems. Its built-in antioxidant properties inhibit oil degradation at elevated temperatures, while the flame-retardant characteristics enhance safety in high-risk environments. The additive also demonstrates secondary functions as a corrosion inhibitor and compatibility enhancer in complex lubricant formulations. These combined functions make T304 a versatile solution for improving both performance and reliability in industrial and automotive lubrication systems.
Applications of Dibutyl phosphite PSAIL T304:
PSAIL T304 is widely used as a high-performance additive in industrial and automotive gear oils, metalworking fluids (including cutting, rolling, and grinding oils), and lubricating greases to enhance extreme pressure and anti-wear properties. It also serves as a key component in flame-retardant lubricants, specialty hydraulic fluids, and high-temperature greases, while its multifunctional characteristics make it suitable as an organic synthesis intermediate, gasoline additive, and corrosion inhibitor. With excellent compatibility across various base oils and additive systems, T304 is ideal for demanding applications in heavy machinery, automotive transmissions, wind turbines, and metal processing, ensuring improved equipment protection, extended lubricant life, and enhanced operational safety.
Price of Dibutyl phosphite PSAIL T304:
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 UNPChemicals.
Techspecs
Chemical property of Dibutyl phosphite PSAIL T304:
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 |
Technical parameters of Dibutyl phosphite PSAIL T304:
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. |
