6-tert-BUTYL-m-CRESOL

PRODUCT IDENTIFICATION

UN NO.

C(c1c(cc(C)cc1)O)(C)(C)C

CLASSIFICATION

Antioxidant, Flavoring agent

EXTRA NOTES

PHYSICAL AND CHEMICAL PROPERTIES

molten solid

0.965

Soluble in alcohol

REFRACTIVE INDEX

107 C

EXTERNAL LINKS & GENERAL DESCRIPTION

Wikipedia Linking

Material Safety Data Sheet

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Antioxidant is a substance added in small quantities to hydrocarbons which are susceptible to oxidation, such as rubbers, plastics, foods, and oils to inhibit or slow oxidative processes, while being itself oxidized.  Antioxidants work in two different ways. In primary antioxidants (also called free-radical scavengers), antioxidative activity is implemented by the donation of an electron or hydrogen atom to a radical derivative. These antioxidants are usually hindered amines (p-Phenylene diamine, trimethyl dihydroquinolines, alkylated diphenyl amines) or substituted phenolic compounds with one or more bulky functional groups such as a tertiary butyl at 2,6 position commonly. Butylated hydroxytoluene (BHT) is a common example of hindered phenolic antioxidant. The reaction rate, or carbocation stability, in S_N1 mechanism is 3° > 2° > 1° > CH₃ (no S_N1) so, tertiary alkyl moiety exists in lots of phenolic antioxidant compounds. Primary antioxidants are free radical scavengers which combine with peroxy radicals and break autocatalytic cycle. In secondary antioxidants ( also called peroxide decomposers), activity is implemented by the removal of an oxidative catalyst and the consequent prevention of the initiation of oxidation. Examples of peroxide decomposer type of antioxidant are trivalent phosphorous and divalent sulfurcontaining compound such as sulfides, thiodipropionates and organophosphites. Synergistic effect is expected when primary antioxidants are used together with secondary antioxidants as primary antioxidants are not very effective against the degradation by UV oxidation. Sometimes, chelating agents are added to scavenge metal impurities which can initiate decomposition. 6-tert-Butyl-m-cresol, a compound of tert-butyl phenolic compound, is used as an intermediate for the preparation of antioxidants and UV stabilizers. It is also known that it is used as a flavoring agent.

6-Tert-butyl-m-cresol is used as a chemical intermediate of antioxidants. It is registered in the EU as a flavoring agent (Chemical group 25).

APPEARANCE

molten solid

98.0% min

MOISTURE

0.5% max

MELTING POINT