Daftar Isi: DYES DERIVED FROM ACENAPHTHENEQUINONE. PART XII. 2-(4-CHLORO)-THIONAPHTHENE-ACENAPHTHYLENE-INDIGOS

Daftar Isi:

Acensphthenequinone and a few of its substituted products and also phenanthrequinane have been condensed with 4-chloro-3-hydroxythionaphtheue. The colour and the dyeing shade of 2-4-chlarolthionaphthene-acenaphthylene-indigos, prepared now, have been compared with those of the corresponding compounds of the 5-, 6- and 7-chloro series, previously studied. The change in colour in relation to chemical constitution of the isomeric 4-, 5-, 6- and 7- chloro dyes of the .acenaphthenequinote series has been established.