Butylated hydroxyanisole


Butylated hydroxyanisole

"E320 redirects here. For the automobile, see Mercedes-Benz E-Class."Chembox new
ImageFile =BHA2.png ImageSize =
IUPACName = 2-tert-butyl-4-hydroxyanisole and 3-tert-butyl-4-hydroxyanisole (mixture)
OtherNames =
Section1 = Chembox Identifiers
CASNo = 25013-16-5
PubChem =
SMILES =

Section2 = Chembox Properties
Formula = C11H16O2
MolarMass = 180.24 g/mol
Appearance = waxy solid
Density =
MeltingPt = 48-55 °C
BoilingPt = 264-270 °C
Solubility =

Section3 = Chembox Hazards
MainHazards =
FlashPt =
Autoignition =

Section 4 = Chembox Related
OtherCpds = Butylated hydroxytoluene

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". [cite web | work = Report on Carcinogens, Eleventh Edition | publisher = National Toxicology Program | title = Substance Profiles: Butylated Hydroxyanisole | url = http://ntp.niehs.nih.gov/ntp/roc/eleventh/profiles/s027bha.pdf]
E number of this food additive is E320.

Controversy

E320 or Butylated hydroxyanisole (BHA) is an additive that accumulates in the body fat. It is known to cause cancer in animals and disrupt the body’s hormone balance. Laboratory studies have shown BHA causes cancer and results in detrimental reproductive effects in rats. [cite web | Publisher = Oxford Journals | title = Carcinogenesis, Vol. 20, No. 11, 2159-2165, Nov 1999 | url = http://carcin.oxfordjournals.org/cgi/content/full/20/11/2159] It is banned in foods for infants and young children in Australia and has been banned in Japan since 1958. Official committees of experts recommended that it be banned in the UK, however because of industry pressure it was not. McDonald's eliminated BHA from their US products in 1986 due to the harmful effects.

ee also

* Anisole
* Butylated hydroxytoluene (BHT)

References

* [http://chemistry.about.com/library/weekly/aa082101a.htm Why are BHA and BHT in foods? Are they safe?]


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Look at other dictionaries:

  • Butylated hydroxyanisole — Hydroxyanisole butylé Pour les articles homonymes, voir BHA. Hydroxyanisole butylé 2 BHA …   Wikipédia en Français

  • butylated hydroxyanisole — noun Either of two isomers of tertiary butyl 4 hydroxyanisole used as a fat soluble antioxidant in some food. Syn: E320 …   Wiktionary

  • butylated hydroxyanisole — Exhibits antioxidant properties; often used with butylated hydroxytoluene propyl gallate, hydroquinone, methionine, lecithin, thiodipropionic acid, etc. Used as an antioxidant, especially in foods. * * * bu·tyl·at·ed hy·droxy·an·i·sole .byüt əl… …   Medical dictionary

  • butylated hydroxyanisole — noun Etymology: hydroxy + anise + ole Date: 1950 BHA …   New Collegiate Dictionary

  • butylated hydroxyanisole — /huy drok see an euh sohl / Chem., Pharm. See BHA. [1945 50; HYDROXY + ANISOLE] * * * …   Universalium

  • butylated hydroxyanisole — bu′tylated hy•drox•y•an′i•sole [[t]haɪˌdrɒk siˈæn əˌsoʊl[/t]] n. biochem. chem. nut See BHA …   From formal English to slang

  • butylated hydroxyanisole — hī¦dräksēˌ noun Etymology: International Scientific Vocabulary hydroxy + anisole : BHA herein …   Useful english dictionary

  • Hydroxyanisole Butylé — Pour les articles homonymes, voir BHA. Hydroxyanisole butylé 2 BHA …   Wikipédia en Français

  • hydroxyanisole — see BUTYLATED HYDROXYANISOLE …   Medical dictionary

  • Butylated hydroxytoluene — Chembox new Name = Butylated hydroxytoluene ImageFile = 2,6 bis(1,1 dimethylethyl) 4 methylphenol.svg ImageSize = 200px ImageName = Butylated hydroxytoluene IUPACName = 2,6 bis(1,1 dimethylethyl) 4 methylphenol OtherNames = 2,6 di tert butyl 4… …   Wikipedia


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