dye|World dye variety

Name:C.I.Acid Red 137,C.I.17755

Molecular Structure: Single azo class

C.I.Acid Red 137,C.I.17755,CAS 6222-63-5,464.43,C20H17N4NaO6S,Acid Red E-F

Molecular Formula:C₂₀H₁₇N₄NaO₆S

Molecular Weight: 464.43

CAS Registry Number:6222-63-5

Manufacturing Methods : 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.

List of Suppliers:

Acid Red E-F Hangzhou Xiasha Hengsheng (Sunshine) Chemicals Co.,Ltd.

Akacid Crocein Scarlet FP (Aakash Chemicals & Dyestuffs Inc)

Atul Paper Scarlet A( Atul Limited )

Croceine Scarlet CFL (Yorkshire Group pic)

Croceine Scarlet FL(Classic Dyestuffs Inc)

Hangzhou Sunshine Acid Red 137( Hangzhou Sunshine Chemicals Co Ltd )

Lerui Acid Red 137( Rosi Chemical Co Ltd )

Sandolan Scarlet E-F( Clariant GmbH )