2-tert-BUTYL-6-METHYLPHENOL

PRODUCT IDENTIFICATION
CAS NO. 2219-82-1

2-tert-BUTYL-6-METHYLPHENOL

EINECS NO. 218-734-7
FORMULA (CH3)3CC6H3(CH3)OH
MOL WT. 164.25
H.S. CODE 2907.19.1000

UN NO.

 2430
TOXICITY  
SYNONYMS 6-tert-Butyl-o-cresol; o-tert-Butyl-o-cresol; o-tert-Butyl-o-cresol;
2-Methyl-6-tert-butylphenol; 6-tert-Butyl-o-Cresol; 6-tert-Butyl-2-Methylphenol; 2-tert-Butyl-6-methylphenol; 2-(1,1-dimethylethyl)-6-methylphenol;
SMILES c1(c(c(ccc1)C)O)C(C)(C)C

CLASSIFICATION

Antioxidant, Fragrance agent

EXTRA NOTES

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE clear to pale yellow semi solid
MELTING POINT 24 - 27 C
BOILING POINT 230 C
SPECIFIC GRAVITY

0.957

SOLUBILITY IN WATER Insoluble
log Pow 3.97 (Octanol-water)
OH RATE CONSTANT 4.98E-11 (cm3/molecule-sec at 25 C Atmospheric )
AUTOIGNITION  
pH  
VAPOR DENSITY  
NFPA RATINGS

Health Hazard: 3, Fire: 0, Reactivity Hazard: 0

FLASH POINT

100 C

STABILITY Stable under ordinary conditions. Hygroscopic.

EXTERNAL LINKS & GENERAL DESCRIPTION

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Because of the sterically hindered group, tert-butylphenolic compounds have an antioxidizing action and also act as UV stabilisers. 2-Tert-butyl-4-methylphenol is used as an intermediate for the preparation of antioxidants and stabilizers. It is also used in fragrances. 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 SN1 mechanism is 3° > 2° > 1° > CH3 (no SN1) 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.

2-tert-Butyl-6-methylphenol is used as a chemical intermediate of antioxidants. It is used as a fragrance agent.
SALES SPECIFICATION

APPEARANCE

 clear to pale semi solid
PURITY (G.C)

99.0% min

MELTING POINT 24 - 27 C
COLOR, APHA

100 max

TRANSPORTATION
PACKING 200kgs in drum
HAZARD CLASS 8 (Packing Group: II)
UN NO. 2430
SAFETY INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 26-37/39
PRICE INFORMATION