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 ?
There are lots of varieties of daffodils, ranging from clear white through cream and pale yellow to butter yellow and my favourite dusky pink, Mrs RO Backhouse.
Here, the colors are subdued, in Tuscan shades of butter yellow, salmon and ochre, with turquoise shutters framing the windows.
New as well from Chantal is a fondue set in fall colors, including Aubergine, Butter Yellow, Garden Green and Cinnnabar.
Petals are golden near the center, fading to butter yellow at the tips.
The ferny divided leaves have a distinct brown hue and the butter yellow flowers are the perfect compliment.
The curious leathery, fan-shaped leaves, which resemble the maidenhair fern, are striking in autumn when they turn from pale green to butter yellow before falling.
At nurseries during early fall, plants like butter yellow maidenhair tree can have more visual impact than rows of annuals.
Sheets of paper in crimson, deep blue and butter yellow and powder paint in the same vibrant colours.
A yellow garden I have known included euryops daisy, Russian giant sunflower, calendula, arctotheca, several different varieties and sizes of yellow marigold, genista, trailing gazania, butter yellow snapdragon, crown yellow pansy, arctotis and kangaroo paw (Anigozanthos).
Most stand up to droughts and neglect while flaunting spikes of tubular, nectar-rich flowers in deep cobalt blue, bold lipstick red, hot pink, cream, butter yellow, vivid orange, or purple.
It has a white stem and peeling bark, catkins in spring, light summer foliage that won't cast heavy shade, and butter yellow leaves in autumn.
And butter yellow, along with beige and spearmint green, is the new neutral that foils the bright tones.