dye|World dye variety

Name:C.I.Disperse Blue 257,C.I.113384

Molecular Structure: Single azo class

C.I.Disperse Blue 257,C.I.113384,CAS 84931-03-3/41622-04-2,C21H23BrN6O5,519.35

Molecular Formula:C₂₁H₂₃BrN₆O₅

Molecular Weight: 519.35

CAS Registry Number: 84931-03-3/41622-04-2

Manufacturing Methods : 2-Cyano-4-nitro-6-bromoaniline diazo, and N-(3-(bis(2-methoxyethyl)amino)phenyl)acetamide coupling.

Properties and Applications:  red light blue. Used for dyeing and printing of polyester, also suitable for polyester superfine fiber, coloring rate is excellent, good fastness properties.

List of Suppliers:

Disperse Blue 3R-SF,Disperse Blue S-3RF

Hangzhou Garden Corporation 

HANGZHOU SHINYANG SAMWOO FINE CHEMICAL CO., LTD 

Wenzhou Yanleng Chemical Co., Ltd.

Allilon Blue S-3RF( Allied Industrial Corp Ltd  )

Begacron Blue 3RSF( PT Colorindo Aneka Chemicals )

Bezjian Polyester Ultra Blue R-LSW ( Bezjian Dye-Chem Inc. )

Blue S-2RF( Hangzhou Dikai Chemical Co Ltd )

Desron Blue S-2RF ( Sinochem Hebei Imp & Exp Corp )

Disperse Blue S-2RF( Ningbo Free Trade Zone T-Chemi Trading Co Ltd/Hangzhou Shinyang Samwoo Fine Chemical Co Ltd )

Intrasil Blue CKC ( Classic Dyestuffs Inc )

Kayalon Polyester Blue 3R-SF ( Nippon Kayak u Co Ltd )

Kiwalon Polyester Blue 3RF ( Kaseihin Kogyo Kyokai )

Sumikaron Blue S-3RF( Sumitomo Chemical Co. Ltd )