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CAS 620-42-8

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Phosphorous acid, tris(4-methylphenyl) ester

Description:
Phosphorous acid, tris(4-methylphenyl) ester, also known as tris(4-methylphenyl) phosphite, is an organophosphorus compound characterized by its structure, which includes a phosphorus atom bonded to three 4-methylphenyl groups and an oxygen atom. This compound is typically a colorless to pale yellow liquid with a mild aromatic odor. It is known for its role as a stabilizer and antioxidant in various polymer applications, particularly in plastics and rubber, where it helps to prevent degradation from heat and light exposure. The compound exhibits good thermal stability and is soluble in organic solvents, making it suitable for use in various formulations. Additionally, it has low volatility, which contributes to its effectiveness in long-term applications. However, like many organophosphorus compounds, it should be handled with care due to potential toxicity and environmental concerns. Proper safety measures, including the use of personal protective equipment, are recommended when working with this substance.
Formula:C21H21O3P
InChI:InChI=1S/C21H21O3P/c1-16-4-10-19(11-5-16)22-25(23-20-12-6-17(2)7-13-20)24-21-14-8-18(3)9-15-21/h4-15H,1-3H3
InChI key:InChIKey=FEVFLQDDNUQKRY-UHFFFAOYSA-N
SMILES:P(OC1=CC=C(C)C=C1)(OC2=CC=C(C)C=C2)OC3=CC=C(C)C=C3
Synonyms:
  • Ai3-26996
  • Brn 0620298
  • Nsc 4054
  • Phosphorous acid, tri-p-cresyl ester
  • Phosphorous acid, tri-p-tolyl ester
  • Phosphorous acid, tri-p-tolyl ester (8CI)
  • Phosphorous acid, tris(4-methylphenyl) ester
  • Tri-p-cresyl phosphite
  • Tris(4-methylphenoxy)phosphine
  • Tris(4-methylphenyl) phosphite
  • See more synonyms
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