Nigrosine Oil Soluble

 Product Name: Nigrosine Oil Soluble


» Color Index Name: Solvent Black 7

» CAS NO.: 8005-02-5


Product Detail

Product Tags

Nigrosine Oil Soluble C.I. solvent black 7 has appearance of black uniform powder. It is insoluble in water, soluble in ethanol, benzene, toluene, soluble in oleic acid and stearic acid.

When concentrated sulfuric acid, Nigrosine Oil Soluble will be come blue to blue-black, when diluted, it is blue-black precipitation. When concentrated nitric acid, it is blue-black. Melting point is more than 180 degrees Celsius. The light (color) fastness and acid-alkali resistance are good.


Nigrosine Oil Soluble Specification

»  Product Name: Nigrosine Oil Soluble

»  Type: Solvent dyes

»  Colour Index: C.I. Solvent black 7

»  CAS No.: 8005-02-5

»  Usage: Mainly used for coloring insulating bakelite, carbon paper, leather shoe polish, plastic resin, rubber, bakelite powder, rubber cloth powder, leather cloth and ink.,

Nigrosine Oil Soluble Basic Information

Basic Information

Product Name

Nigrosine Oil Soluble

Colour Index 

C.I. Solvent Black 7





Similar With Standard


Uniform Black Powder
        Moisture %≤  2.0




Insoluble in water, soluble in oil

Use of Nigrosine Oil Soluble:

Nigrosine Oil Soluble dye is widely used in dyeing and printing of cotton fabrics. When dyeing, cotton fabrics are dipped in a solution composed of aniline salts, and then oxidized to black. The dyes can withstand sunshine and rain, and are strong for hot soap solution and dilute bleaching powder solution. When over oxidized, it is blue-black and brittle. When oxidized insufficiently or reduced, it can turn green. At present, most of them are made into nigrosine black, which is sold as organic pigments. The products include Nigrosine Oil Soluble (hereinafter referred to as oil-soluble black), alcohol-soluble nigrosine black (hereinafter referred to as alcohol-soluble black) and so on. Used for coloring rubber, high-grade insulating bakelite, carbon paper, leather shoe polish etc.

Our Solvent Dyes Ranges

» Solvent red dyes

» Solvent yellow dyes

» Solvent black dyes

» Solvent blue dyes


Contact person: Miss Jessie Geng

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