Name:C.I.Leuco Sulphur Brown 52,C.I.53320
CAS Registry Number:
Manufacturing Methods : 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.
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List of Suppliers:
Cassulfon Cutch R( Cassella AG )
Sodyesol Liquid Orange RDB ( Clariant GmbH )
Sodyesul Liquid Brown 2YFL( Sodyeco Division Martin Marietta Chemicals )
Sodyesul Liquid Orange RDCF( Clariant GmbH )