Reactive Brown(p) H4R

Reactive Brown(p) H4R


Textile Dyestuffs

C.I.Reactive Brown 9

Molecular Structure: Single azo

C.I.Reactive Brown 9,CAS 12225-66-0,824.13,C28H20ClN7Na2O12S3,Crimson K-RB,Reactive Red Brown K-B3R,Reactive Red Brown KM-B3R

Crimson K-RB

Reactive RedBrown K-B3R

Reactive Red Brown KM-B3R

Molecular Formula:C28H20ClN7Na2O12S3

Molecular Weight: 824.13

CAS Registry Number:12225-66-0

Manufacturing Methods : 2-Aminobenzoic acid diazo, and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, and then chromium complexation; 2,4,6-Trichloro-1,3,5-triazine and 2-(4-Aminophenylsulfonyl)ethyl hydrogen sulfate condensation, triethylorthoformate condensation, again with complex product condensation, and salting-out.

Properties and Applications: Claret . Palm black powder. The strong sulfuric acid for black purple, diluted into purple, accompanied by precipitation; Nitric acid in the red for sauce, diluted for sauce is still red. The dye water solution is red sauce, add 1 Moore sodium hydroxide is still red sauce, continue to join insurance powder by shallow warm red to colorless; Add a boric acid sodium can’t restore the original colour and lustre. Can be used for cotton, viscose and various methods of silk dyeing and printing directly.




Light Fastness Oxygen bleaching Persperation Fastness Soaping
Fading Stain Fading Stain Fading Stain
ISO 4-5 5 4-5 4-5 3-4








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