dye|World dye variety

Name:C.I.Acid Red 40,C.I.18070

Molecular Structure: Single azo class

C.I.Acid Red 40,C.I.18070,CAS 12167-45-2,537.48,C20H17N3Na2O8S2,Calocid Ceresine

Molecular Formula:C₂₀H₁₇N₃Na₂O₈S₂

Molecular Weight: 537.48

CAS Registry Number:12167-45-2

Manufacturing Methods : mix 2,4-Dimethylbenzenamine diazo, and 4-Acetamido-5-hydroxynaphthalene-2,7-disulfonic acid coupling.

Properties and Applications: blue-ray red. Soluble in water is red. The strong sulfuric acid for blue-ray red, diluted for pink; In nitric acid for pink; In 10% of sodium hydroxide solution for yellow.

List of Suppliers:

Calocid Ceresine ( Columbian Chemicals UK )