dye|World dye variety

Name:C.I.Acid Yellow 219

Molecular Structure: Double azo class

C.I.Acid Yellow 219,CAS 71819-57-3,448.43,C20H17N4NaO5S,Weak Acid Yellow 4R,Weak Acid brown GR,Erio Yellow 4R,Tectilon Yellow 4R

Molecular Formula:C₂₀H₁₇N₄NaO₅S

Molecular Weight: 448.43

CAS Registry Number:71819-57-3

Manufacturing Methods : 3-Aminobenzenesulfonic acid diazo, and (2-Methoxyphenylamino)methanesulfonic acid coupling, remove a sulfonic acid hydrolysis base, its product to diazo, coupled with phenol, then the etherification.

Properties and Applications: red light yellow. Orange powder, soluble in water. Mainly used for wool, polyamide fiber dyeing and printing.

List of Suppliers:

Weak Acid Yellow 4R,Weak Acid brown GR

Shangyu Guangming Chemical Co.,Ltd.

Jinhua Hanllycome Chemical Co., Ltd.

Akacid Yellow 4RK 250% (Aakash Chemicals & Dyestuffs Inc)

Best Acid Yellow 4RK( Oriental Giant Dyes and Chemical Ind Corp )

Chromalon Yellow 4R KWL 200% ( Chrochem AG )

Dorasyn Yellow C4RN( D&G Dyes Inc. )

Erio Yellow 4R( Ciba Specialty Chemicals Inc )

Orco Nylosol Yellow 4GR 250% ( Organic Dyestuffs Corp )

Phoebe Yellow W-4R 200%( Anhui Fengyang Dyestuffs and Chemicals Co. Ltd. )

Ricoamide Yellow CRM 250%( Rite Industries Inc. )

Taitilon Yellow 4R-T 200% KWL ( T & T Industries Corp )

Tectilon Yellow 4R( Ciba Specialty Chemicals Inc )