Synonym(s): TBP, phosphoric acid tributyl ester, tri-n-butyl phosphate.

Description

CG 530, Tributyl phosphate, also known as TBP, is a colorless and odorless transparent liquid at ambient. It is slightly soluble in water, but is miscible with most organic solvents, such as toluene. It is used as an extracting agent for rare earth metals. In some cases, TBP is used as a plasticizer. It is also used as a defoaming agent in dyes, coatings, petroleum drilling and paper industries.

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Specification

Property	Specification	Typical Value
Appearance, 25 °C	Colorless clear liquid	Colorless clear liquid
Density, g / mL, 20 °C	0.973 – 0.980	0.975
Butanol, % wt	0.1 Max	< 0.1
Water, % wt	0.1 Max	0.05
Purity, %	99 Min	99.3

Properties

Chemical Formula	C12H27O4P
Molecular Weight	266.32
Appearance, 25 °C	Colorless liquid
Melting Point	- 80 °C (-112 °F)
Initial boiling point	289 °C (552 °F)
Density, 20 °C, g/cm3	0.975
Solubility in Water, 25 °C	~ 0.4 g / L

Applications

CG 530, Tributyl phosphate, is useful for a variety of applications, which include, but are not limited to,

Defoaming agent used in many industries, such as construction and textiles
Plasticizer
Extracting agent
Lab uses

CG 530, Triphenyl phosphite, is widely used in many industries, which include, but are not limited to, Plastic and rubbers, rare-earth metals, lubricants, coatings, and dyes, paints, and adhesives, etc.

Manufacturing Process

Tributyl phosphate, TBP, is typically manufactured by reacting n-butanol with phosphoryl trichloride. Hydrochloride, a strong inorganic acid, is a side product in the production.

Chemical Reactions

Tributyl phosphate is hydrolyzed in the presence of an acid or base catalyst. The products resulted from the hydrolysis of tributyl phosphate are phosphoric acid and butanol.

Tributyl phosphate reacts with concentrated nitric acid to form a TBP-HNO3 adduct.

Spectra

NMR

1H NMR of CG 579 Triphenyl phosphite

SDBS : https://sdbs.db.aist.go.jp/ , National Institute of Advanced Industrial Science and Technology, February, 3rd, 2025

IR

SDBS : https://sdbs.db.aist.go.jp/ , National Institute of Advanced Industrial Science and Technology, February, 3rd, 2025

Packaging

200 kg / drum, 441 lbs / drum

1,000 kg / Tote, 2,204 lbs / Tote

Other packaging sizes available upon request

Documents

TDS

CG 530 Tributyl Phosphate, CAS 126-73-8, TBP, Phosphoric Acid Tributyl Ester