Butylated hydroxytoluene
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Description
A white, crystalline solid. Butylated hydroxytoluene (BHT) is an antioxidant used in rubber and plastic. It can oxidize to form a dark yellow oily liquid which then migrates to the surface of its plastic or rubber.
Synonyms and Related Terms
BHT; di-tert-butyl-para-cresol; 2,6-Bis(1,1-dimethylethyl)-4-methylphenol; Antrancine 8; Tenox BHT; Ionol CP; Vianol; Dalpac
Risks
- Slightly toxic by inhalation, ingestion and contact.
- Combustible. Flash point = 127C
- Yellows severely with age.
- May decompose to an oily film that migrates from plastics.
- Fisher Scientific: SDS
Physical and Chemical Properties
Soluble in toluene, methanol, ethanol, isopropanol, methyl ethyl ketone, acetone, Cellosolve® and most hydrocarbon solvents. Insoluble in water.
| Composition | [C(CH3)3]2CH3C6H2OH |
|---|---|
| CAS | 128-37-0 |
| Melting Point | 70 C |
| Density | 1.048 g/ml |
| Molecular Weight | mol. wt. = 220.34 |
| Refractive Index | 1.4859 |
| Boiling Point | 265 C |
Resources and Citations
- Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 274
- Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: 1521