What is Tributyl Phosphate CAS 126-73-8?

Tributyl phosphate, also called TBP or tri-n-butyl phosphate, is an organophosphorus ester with CAS 126-73-8, molecular formula C₁₂H₂₇O₄P and EINECS 204-800-2. It is a colorless to light yellow liquid with low water solubility and good miscibility with many organic solvents.

What specifications should be checked when buying Tributyl Phosphate?

Confirm purity or assay, color, water content, acidity and any application-specific impurities. Extraction and nuclear-fuel-cycle applications can require tighter specifications than general industrial defoaming or plasticizer use, so the intended application should determine the grade.

How should Tributyl Phosphate be stored and handled?

Store TBP in tightly closed containers in a cool, ventilated area away from strong alkalis and oxidizers. Because it can hydrolyze under alkaline conditions, control moisture and incompatible chemical contact, use chemical-resistant PPE, and follow applicable spill and disposal procedures.

Tributyl Phosphate CAS 126-73-8

Tributyl Phosphate (TBP), CAS 126-73-8, is an organophosphorus ester used as a solvent, metal extractant, defoamer and plasticizer. Confirm the required grade and handling requirements for the intended application.

CAS: 126-73-8
Synonyms: TBP, Tri-n-butyl phosphate, Butyl phosphate, Phosphoric acid tributyl ester, Tributyl phosphate
Einecs: 204-800-2
Molecular Formula: C₁₂H₂₇O₄P
Grade: Industrial grade 99%
Package: 200kg iron drum or 50kg plastic drum packing

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Product Description

Tributyl Phosphate (TBP) is an organophosphorus ester identified by CAS 126-73-8 and EC/EINECS 204-800-2.

Synonyms: TBP; Tri-n-butyl phosphate; Butyl phosphate; Phosphoric acid tributyl ester.

CAS: 126-73-8.

Molecular formula: C₁₂H₂₇O₄P.

Molecular weight: 266.32.

EC number: 204-800-2.

It is a colorless to light yellow liquid with low water solubility and good miscibility with many organic solvents.

Typical properties include melting point about -79 °C, flash point about 146 °C, and surface tension about 27.79 mN/m at 20 °C.

TBP is used mainly as a solvent and extractant in hydrometallurgy, including rare-earth, uranium and other metal extraction.

It also works as a defoamer and air-release additive in coatings, inks and adhesives, and as a plasticizer for cellulose esters, lacquers, plastics and vinyl resins.

It can hydrolyze under alkaline conditions, so control moisture and incompatible chemical contact.

Confirm purity or assay, color, water content, acidity and any application-specific impurities.

Confirm the current product-specific specification.

Confirm packaging with the requested quantity and destination requirements.

Document requirements should be confirmed from the current specification, SDS, COA, or other product-specific files.

Regulated-use suitability must be confirmed separately with current product-specific documentation.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended use, required specification, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Tributyl Phosphate CAS 126-73-8?

A: Tributyl phosphate, also called TBP or tri-n-butyl phosphate, is an organophosphorus ester with CAS 126-73-8, molecular formula C₁₂H₂₇O₄P and EINECS 204-800-2. It is a colorless to light yellow liquid with low water solubility and good miscibility with many organic solvents.
Q:
What is Tributyl Phosphate used for?

A: TBP is used mainly as a solvent and extractant in hydrometallurgy, including rare-earth, uranium and other metal extraction. It also works as a defoamer and air-release additive in coatings, inks and adhesives, and as a plasticizer for cellulose esters, lacquers, plastics and vinyl resins.
Q:
What specifications should be checked when buying Tributyl Phosphate?

A: Confirm purity or assay, color, water content, acidity and any application-specific impurities. Extraction and nuclear-fuel-cycle applications can require tighter specifications than general industrial defoaming or plasticizer use, so the intended application should determine the grade.
Q:
How should Tributyl Phosphate be stored and handled?

A: Store TBP in tightly closed containers in a cool, ventilated area away from strong alkalis and oxidizers. Because it can hydrolyze under alkaline conditions, control moisture and incompatible chemical contact, use chemical-resistant PPE, and follow applicable spill and disposal procedures.

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