butter yellow

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but·ter yel·low

(bŭt'er yel'ō), [C.I. 11160]
A fat-soluble yellow dye (MW 225) that has hepatic carcinogenic action in experimental animals; used as an indicator of pH (red, at pH 2.9, yellow at pH 4).

butter yellow

A fat-soluble yellow dye formerly used as a food additive, which proved to be a liver and bladder carcinogen in rodents and is no longer used in food.

Toxicity
Hepatomegaly, liver and kidney dysfunction, contact dermatitis, cough, wheezing, dyspnoea, bloody sputum, urinary frequency, haematuria, dysuria, possible occupational carcinogen.

butter yellow

p-dimethylaminoazobenzene. Used as a laboratory agent. It is a carcinogen and is the type poison for causing hyperplasia of bile ducts involving the smaller interlobular bile ducts and the intralobular cholangioles.
References in periodicals archive ?
25 May 2009 - French authorities have been informed that traces of banned food colouring - Methyl yellow, or C.
This latest discovery of methyl yellow in spice has occured only several weeks after some European countries including Belgium and France detected the banned food colouring in Delhaize and Intermarche products.
7 April 2009 - A few days after Intermarche's Indian curry spice recall in France and Belgium, Delhaize has also announced a recall after discovering methyl yellow in pepper.
The recall was lauched further to the discovery of a banned food colouring in the spice - Methyl yellow, or C.