Diacenaphtho[1,2-j:1′,2′-1]fluoranthene? and sulfur mixture for roasting (in 20 hours of roasting temperature up to 350 ℃, and keep the temperature for more than 8 hour), the product with Sodium hydroxide in 100 ~ 110 ℃ processing, then filtering, and taking sulfuric acid precipitation. Note: the Diacenaphtho[1,2-j:1′,2′-1]fluoranthene?and nitrocellulose derivatives (namely C.I. Sulphur Brown 60, C.I. 53325 and?C.I. Sulphur Brown 51, C.I. 53327) the dye it has excellent resistance to sun fastness.
Properties and Applications
brown. Brown powder. Soluble in Sodium sulfide solution. In the basic insurance powder solution for red brown; In Sodium hypochlorite solution is partly by the bleaching. Used for cotton, hemp, viscose fabric dyeing.
