Butylated hydroxyanisole

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Butylated hydroxyanisole
IUPAC name 2-tert-butyl-4-hydroxyanisole and 3-tert-butyl-4-hydroxyanisole (mixture)
Identifiers
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Properties
C11H16O2
Molar mass 180.24 g/mol
Appearance waxy solid
Melting point
Boiling point
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Butylated hydroxyanisole (BHA) is a mixture of two isomeric organic compounds, 2-tert-butyl-4-hydroxyanisole and 3-tert-butyl-4-hydroxyanisole. It is prepared from 4-methoxyphenol and isobutylene. It is a waxy solid that exhibits antioxidant properties.

Like butylated hydroxytoluene (BHT), the conjugated aromatic ring of BHA is able to stabilize free radicals, sequestering them. By acting as free radical scavengers, further free radical reactions are prevented.

The National Institutes of Health considers BHA reasonably anticipated to be a human carcinogen.[1]

See also

References

  1. "Substance Profiles: Butylated Hydroxyanisole" (PDF). Report on Carcinogens, Eleventh Edition. National Toxicology Program.

it:Butilidrossianisolo


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