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triisobutyl phosphate

Triisobutyl Phosphate (TIBP)

TIBP exhibits excellent thermal stability and high compatibility with different materials, making it valuable in the production of plastics, resins, and coatings.

CAS No.: 126-71-6 

Molecular formula:C12H27O4P

Molecular weight: 266.32 (according to the Standard Atomic Weights 1987)

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Structure Diagram of Triisobutyl Phosphate (TIBP)



Molecular formula


Molecular weight

266.32 (according to the Standard Atomic Weights 1987)

Molecular structure diagram

Triisobutyl Phosphate (TIBP) of Molecular Structure Diagram

Properties: Colorless or light yellow transparent liquid. The melting point is less than -60℃ and the boiling point is 264℃. It is insoluble in water and miscible in various organic solvents such as alcohol and ether.

Introduction of Triisobutyl Phosphate (TIBP)


Application: Triisobutyl phosphate (TIBP) has several applications in different industries. It is primarily used as a flame retardant in materials such as plastics, resins, and coatings. It acts as a plasticizer, enhancing the flexibility and durability of polymers. TIBP also serves as a solvent for various chemicals and materials.


Packing: 200 kg/galvanized iron drum, 1000 kg/IBC drum


Storage and transportation: Handled with care during transportation to prevent impact. Stored in a cool, ventilated and dry warehouse, ensuring fire prevention and rain proof.

Specifications of Triisobutyl Phosphate (TIBP)


Reagent Grade


Colorless transparent liquid

Chroma (Pt-Co Color Number)


Content %


Density (20℃) g/mL


Refractive Index(Nd20)


Acid value mgKOH/g


Moisture %


How Does Triisobutyl Phosphate (TIBP) Function?


Flame Retardant: TIBP acts as a flame retardant by reducing the flammability of materials. When exposed to heat or flames, TIBP decomposes and releases phosphorus compounds that form a protective layer on the material's surface. This layer acts as a barrier, preventing the spread of flames and slowing down the combustion process.


Plasticizer: TIBP is used as a plasticizer in the production of plastics, resins, and coatings. As a plasticizer, it increases the flexibility, softness, and workability of these materials. TIBP helps to improve the flow properties of polymers during processing and enhances the overall performance and durability of the final products.


Solvent: TIBP serves as a solvent in various chemical processes. It has good solvency for a wide range of substances, making it useful in dissolving and dispersing solid or liquid components. TIBP's solvent properties facilitate reactions, aid in the formulation of products, and assist in the extraction and purification of certain compounds.

Is Triisobutyl Phosphate (TIBP) Safe for Use?

TIBP is generally considered to have low toxicity. However, as with any chemical substance, it is important to follow proper safety precautions and guidelines when handling TIBP. This includes wearing appropriate protective equipment and ensuring proper ventilation in the work area. It is recommended to consult the safety data sheet (SDS) and follow the manufacturer's instructions for safe handling and use of TIBP.