sodium 7-(acetylamino)-3-[[4-(acetylamino)phenyl]azo]-4-hydroxynaphthalene-2-sulphonate;Acid red 137 (C.I. 17755);Scarlet A;Blackley Fast Paper Scarlet N;Acid Red 137 ISO 9001:2015 REACH;C.I.Acid Red 137:C.I.17755
N-(4-aminophenyl)acetamide diazo, and ?7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications
yellow light red. Soluble in water for red, red orange for adequate soluble in alcohol. The strong sulfuric acid for product red, diluted into yellow orange. In water solution to join after strong hydrochloric acid red brown precipitation; Add thick sodium hydroxide solution into a yellow brown.
Standard
Light Fastness
Soaping
Persperation Fastness
Oxygen bleaching
Fastness to seawater
Fading
Stain
Fading
Stain
Fading
Stain
AATCC
5
Acid Red 137 Preparation Products And Raw materials