Reference

Termination of provisional listing and certification of D&C Red No

Termination of provisional listing and certification of D&C Red No. 10, D&C Red No. 11, D&C Red No. 12, and D&C Red No. 13. Anon. (Food Drug Adm., Washington, D. C., USA). Fed. Regist., 42(239), 62475-7, (English) 13 Dec 1977. CODEN: FEREAC. ISSN: 0097-6326. DOCUMENT TYPE: Journal CA Section: 63 (Pharmaceuticals) Section cross-reference(s): 4, 17, 62 The use of D and C Reds Nos. 10 [1248-18-6], 11 [1103-39-5], 12 [1103-38-4], and 13 [6371-67-1] could expose the consumer to carcinogenic b-naphthylamine [91-59-8] through its presence as a contaminant in an intermediate and as a metabolic product. Therefore, certification of these color additives is being terminated.

Spectral studies of Lithol Red pigments

Spectral studies of Lithol Red pigments. Czajkowski, Wojciech (Inst. Dyes, Tech. Univ. Lodz, Lodz 90-924, Pol.). Dyes Pigm., 8(2), 141-50 (English) 1987. CODEN: DYPIDX. ISSN: 0143-7208. DOCUMENT TYPE: Journal CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) The origins of the color changes in alkali or alk. earth metal salts of I were investigated by spectral methods. All the examd. pigments existed, both in soln. and in the crystal state, in the hydrazone form. All the products had very similar spectra in soln. 6371-67-1 and 1103-39-5 which are cas registry numbers of substances are two of reagents here. In the crystal state intermol. interactions influenced by the crystal structure and by the size of the metal cation could be the factors which caused the obsd. color of the pigments. .