Yellow AB
Title: Yellow AB
CAS Registry Number: 85-84-7
CAS Name: 1-Phenylazo-2-naphthalenamine
Additional Names: C.I. Solvent Yellow 5; FD & C Yellow no. 3; Ext. D & C Yellow no. 9; C.I. 11380
Molecular Formula: C16H13N3
Molecular Weight: 247.29
Percent Composition: C 77.71%, H 5.30%, N 16.99%
Literature References: Prepd from diazotized aniline and b-naphthylamine: Lawson, Ber. 18, 796 (1885); Colour Index vol. 4 (3rd ed., 1971) p 4021. Toxicity studies: Allmark et al., J. Pharm. Pharmacol. 7, 591 (1955); Hansen et al., Toxicol. Appl. Pharmacol. 5, 16 (1963). Formerly used in the U.S. for coloring oleomargarine.
Properties: Red platelets from abs alc, mp 102-104°. Practically insol in water. Sol in alcohol, carbon tetrachloride, acetic acid, vegetable oils. An alcoholic soln becomes redder with HCl addition, and is unaltered by NaOH addition.
Melting point: mp 102-104°

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