Triisobutyl Phosphate

Triisobutyl phosphate (TIBP), also known as phosphoric acid triisobutyl ester or tris(2-methylpropyl) phosphate, is a high-purity organophosphorus compound with the molecular formula C₁₂H₂₇O₄P and CAS number 126-71-6, presenting as a colorless to light yellow transparent liquid with a mild characteristic odor. This versatile phosphate ester possesses a molecular weight of 266.31 g/mol and exhibits a density of approximately 0.965 g/mL at 20°C, with a boiling point around 205°C and a flash point of 150°C, demonstrating excellent thermal stability across a wide range of processing conditions. Triisobutyl phosphate is characterized by its low volatility and high chemical stability, being slightly soluble in water but readily miscible with most organic solvents including ethanol, acetone, ether, and chloroform, which makes it an exceptionally strong polar solvent for numerous industrial formulations.

The primary industrial application of Triisobutyl phosphate lies in its role as an efficient defoamer, where it effectively both destroys existing foam and acts as a foam inhibitor across various aqueous systems, making it particularly valuable in cement and concrete admixtures where it stabilizes microscopic air content to drastically improve durability, texture, and freeze-thaw resistance of construction materials. Beyond foam control, TIBP serves as a highly effective flame-retarding plasticizer in synthetic resins, vinyl formulations, and rubber compounds, where its branched isobutyl groups provide excellent compatibility and resistance to migration, ensuring long-term flexibility without compromising product integrity in PVC flooring, wire insulation, and automotive interior applications. In the textile and paper industries, Triisobutyl phosphate is widely utilized as a strong wetting agent and penetrant, facilitating even dye distribution and promoting superior finish quality in paper coating systems, textile auxiliaries, adhesives, and plastic dispersion formulations. The compound also finds significant use as a solvent and coalescing aid in paints, printing inks, and coatings, as an effective extractant in hydrometallurgy for separating rare earth elements and heavy metals, and as a foam suppressant in oilfield drilling fluids and fracturing operations.

In addition, Triisobutyl phosphate is employed as a pasting agent for pigment pastes, as a liquefying agent for concrete, and as a component in synthetic resin and natural rubber solutions, with its broad chemical compatibility and low temperature-viscosity influence making it suitable even for specialty applications such as hydraulic fluid manufacturing for aircraft systems. For packaging and storage, Triisobutyl phosphate is typically supplied in 200 kg galvanized iron drums, IBC containers of 1,000 kg, or isotanks ranging from 20 to 25 metric tons, and should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from oxidizing agents and direct sunlight, where it maintains excellent stability for up to 12 to 24 months under proper conditions.

Packaging Specifications：25kg HPE drum, 200kg HPE drum, 1000kg IBC drum.

Shipping details：After the customer confirms the order, we will ship the goods within 15 business days.

Shandong Inno-Chem CO., LTD. is a professional manufacturer of fine chemical products. They have been specializing in the production of levulinic acid and phosphate ester series products for over ten years. These products are of stable and reliable quality and are widely used in pharmaceuticals, pesticides, fertilizers, daily chemicals, fragrances, perfumes, defoamers, flame retardants, fuel additives, and other fields.