Tris(2,4-di-tert-butylphenyl)phosphite is an
organophosphorus compound
Organophosphorus chemistry is the scientific study of the synthesis and properties of organophosphorus compounds, which are organic compounds containing phosphorus. They are used primarily in pest control as an alternative to chlorinated hydrocarbo ...
with the formula
C4H9)2C6H3Osub>3P. This white solid is a widely used
stabilizer
Stabilizer, stabiliser, stabilisation or stabilization may refer to:
Chemistry and food processing
* Stabilizer (chemistry), a substance added to prevent unwanted change in state of another substance
** Polymer stabilizers are stabilizers used ...
in polymers where it functions as a secondary antioxidant. It also reduces discoloration (yellowing) of plastics. The compound is a
phosphite ester
file:Phosphite.svg, The general structure of a phosphite ester showing the lone pairs on the P
In organic chemistry, a phosphite ester or organophosphite usually refers to an organophosphorous compound with the formula P(OR)3. They can be conside ...
formed by the reaction of
2,4-di-tert-butylphenol with
phosphorus trichloride
Phosphorus trichloride is an inorganic compound with the chemical formula PCl3. A colorless liquid when pure, it is an important industrial chemical, being used for the manufacture of phosphites and other organophosphorus compounds. It is toxic ...
. It is an approved
food contact materials
Food contact materials or food contacting substances (FCS) are materials that are intended to be in contact with food. These can be things that are quite obvious like a glass or a can for soft drinks as well as machinery in a food factory or a ...
in the US.
[{{cite journal , last1=Markley , first1=Laura C. , last2=González Bonet , first2=Andrés M. , last3=Ogungbesan , first3=Adejoke , last4=Bandele , first4=Omari J. , last5=Bailey , first5=Allan B. , last6=Patton , first6=Geoffrey W. , title=Safety assessment for Tris(2,4-di-tert-butylphenyl) phosphite (Irgafos 168) used as an antioxidant and stabilizer in food contact applications , journal=Food and Chemical Toxicology , date=August 2023 , volume=178 , pages=113877 , doi=10.1016/j.fct.2023.113877]
See also
*
Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite - another phosphite antioxidant
*
Pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate) - a common phenolic antioxidant that it often paired with.
References
Phenol ethers
Organophosphites