C.I. Acid Orange 137
|Molar mass||590.49 g/mol|
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Orange B is a food dye from the azo dye group. It is approved by the United States Food and Drug Administration (FDA) for use only in hot dog and sausage casings or surfaces, only up to 150 parts per million of the finished food weight. It is typically prepared as a disodium salt.
Orange B was first listed as an approved food dye by the FDA in 1966. In 1978, the FDA proposed removing it from the list due to concerns about the presence of carcinogenic contaminants (specifically 2-Naphthylamine). The only supplier in the United States, the William J. Stange Company, subsequently stopped manufacturing it and it was never removed from the list.
- "Code of Federal Regulations: Title 21, Section 74.250". U.S. Food and Drug Administration. Retrieved 24 December 2012.
- Hathcock, John N. (1982). Nutritional Toxicology. New York: Academic Press. pp. 407–408. ISBN 012332601X.
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