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Rostabil TPP is an aryl phosphite in the form of a clear liquid with a characteristic, delicate fragrance. It is used as an intermediate in many chemical syntheses. Phosphorus on the third oxidation stage affects its good reduction capabilities used in the deoxygenation process, e.g. sulphoxides to sulfides or aliphatic epoxides to alkenes. The mildly nucleophilic nature of phosphite is used in the conversion of alcohols to alkyl halides.

Chemical Name: Triphenyl phosphite

Functions: Antioxidant, Intermediate, Stabilizer, Thermal Stabilizer

CAS Number: 101-02-0

Chemical Family: Aromatics, Phosphorous-based Compounds

Technical Data Sheet

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Identification & Functionality

Chemical Name
Base Chemicals Functions
CAS No.
101-02-0
EC No.
202-908-4

Features & Benefits

CASE Ingredients Features

Applications & Uses

Markets
Applicable Processes
Properties and Applications

Used as a thermal & processing stabilizer and/or antioxidant in plastics as well as paint and varnish industries. It is also a raw material for the trans-esterification.

  • very high purity
  • high reactivity, enabling the use of many chemical substances for synthesis
  • low viscosity
  • high hydrolytic stability
  • chemical industry – as an intermediate for further synthesis
  • raw material in the synthesis of phosphites

Properties

Physical Form
Appearance
Homogeneous, Clear Liquid
Insoluble in
Water
Typical Properties
ValueUnitsTest Method / Conditions
Hazen Colourmax. 50
Acid valuemax. 0.5mg KOH/g
Density at 25 °C1.180 – 1.186g/cm3
Refraction Index nD251.587 – 1.590
Phenol contentmax. 1.0% (w/w)
Phosphorus content9.8 – 10.0% (w/w)
Molecular weight311.0g/mol
Melting pointabout 22°C

Regulatory & Compliance

Quality Standards