8065. Quinizarin Green SS

Nomenclature

CAS number: 128-80-3
1,4-Bis[(4-methylphenyl)amino]-9,10-anthracenedione; 1,4-di-p-toluidinoanthraquinone; D & C Green No. 6; C.I. Solvent Green 3; C.I. 61565.
C28H22N2O2; mol wt 418.49.
C 80.36%, H 5.30%, N 6.69%, O 7.65%.

Description and references

Discovered by R. E. Schmidt in 1894: Colour Index vol. 4 (3rd ed., 1971) p 4541.

Chemical structure

Properties

Dark violet needles, mp 218°. Blue soln in conc H2SO4 giving a blue-green ppt on dilution.

Use

For sutures: Fed. Regist. 40, 18167 (1975). Permitted for use in externally applied drugs and cosmetics: ibid. 47, 14138 (1982).