dye|World dye variety

Name:C.I.Acid Orange 137,C.I.19235

Molecular Structure: Single azo class

C.I.Acid Orange 137,C.I.19235,CAS 15139-76-1,590.5,C22H16N4Na2O9S2

Molecular Formula:C₂₂H₁₆N₄Na₂O₉S₂

Molecular Weight: 590.5

CAS Registry Number:15139-76-1

Manufacturing Methods :  Phenylhydrazine-4-sulfonic acid and 2-Hydroxymaleic acid ethyl ester derivatives of the sodium reaction, and partly hydrolysis, lost a ethyl, finally and diazo of 4-Aminonaphthalene-1-sulfonic acid matches.

Properties and Applications: dark orange. The strong sulfuric acid for purple, diluted into red; In strong hydrochloric acid for red; In 10% of sodium hydroxide solution for yellow orange, yellow light is palm diluted.

List of Suppliers: