dye|World dye variety

Name:C.I.Acid Blue 21,C.I.18120

Molecular Structure: Single azo class

C.I.Acid Blue 21,C.I.18120,CAS 6441-95-8,636.59,C23H18N4Na2O9S3,Brilliant Blue MR

Molecular Formula:C₂₃H₁₈N₄Na₂O₉S₃

Molecular Weight: 636.59

CAS Registry Number:6441-95-8

Manufacturing Methods : (a) N-(3-aminophenyl)acetamide diazo, and 8-(4-Methylphenylsulfonamido)-1-naphthol-3,6-disulfonic acid coupling, hydrolysis acetyl groups; (b) 4-Nitrobenzenamine diazo, and 8-(4-Methylphenylsulfonamido)-1-naphthol-3,6-disulfonic acid coupling, and then will the nitro reduction.

Properties and Applications: red light blue. Soluble in water for red purple. The strong sulfuric acid for red, diluted the same color. In water solution to join strong hydrochloric acid for brick red; Add 10% sodium hydroxide solution for blu-ray red. The sun fastness medium.

List of Suppliers:

Brilliant Blue MR( Industria Chimica Dott  )