FD&C Coloring Information
- FDA - Color Additives Fact Sheet - What the FDA says about artificial colorings.
- TITLE 21: Electronic Code of Federal Regulation, Color Additives Subject to Certfication - Prettier, easier to read format; browse them by clicking on "Browse Next" etc.
- TITLE 21: Plain Text Format: FDA Listing of Color Additives, details of requirements for certification - amounts of contaminants allowed
- FDA: Summary of Color Additives Listed for Use in the United States - 2007
- FDA - Color Additives for Medical Devices
- How much do we use? - FDA - Color Certification Reports
- Report on Carcinogens
Dyes That Metabolize to Benzidine
Benzidine - note only 1 ppb (1 ng/g) is allowed by Code of Federal Regulations)
- Lancaster & Lawrence study, 1999, finding 5 to 270 ng/g of benzidine in tartrazine
- Peiperl, Prival, & Bell, 1995, finding that half the samples (34 of 67) tested had more than 10 ng/g of benzidine, ranging from 11 to 104 ng/g, except for one sample containing 941 ng/g.
- Peiperl, Prival, & Bell, 1993, finding that 25 of 53 samples tested had 7 to 83 ng/g of benzidine
- Doesn't it make you wonder how much Benzidine is actually in that yellow piece of candy you are about to eat?
- Encyclopaedia Britannica
- Other General Information Resources about Colorings: