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DISPERSE BLUE 257

DISPERSE BLUE 257 structure

CAS No:
84931-03-3
Formula:
C21H23BrN6O5
Chemical Name:
DISPERSE BLUE 257
Synonyms:
Acetamide, N-[5-[bis(2-methoxyethyl)amino]-2-[(2-bromo-6-cyano-4-nitrophenyl)azo]phenyl]-;N-[5-[BIS(2-METHOXYETHYL)AMINO]-2-[(2-BROMO-6-CYANO-4-NITROPHENYL)AZO]PHENYL]ACETAMIDE;Acetamide, N-(5-(bis(2-methoxyethyl)amino)-2-((2-bromo-6-cyano-4-nitrophenyl)azo)phenyl)-;Acetamide, N-(5-(bis(2-methoxyethyl)amino)-2-(2-(2-bromo-6-cyano-4-nitrophenyl)diazenyl)phenyl)-;Disperse blue 257;EINECS 255-467-5;N-(5-(Bis(2-methoxyethyl)amino)-2-((2-bromo-6-cyano-4-nitrophenyl)azo)phenyl)acetamide;Acetamide, N-[5-[bis(2-methoxyethyl)amino]-2-[2-(2-bromo-6-cyano-4-nitrophenyl)diazenyl]phenyl]-;DTXSID3068334;CTK8I6735
Categories:
Dyes and Pigments > Dye

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DISPERSE BLUE 257 Basic Attributes

Molecular Weight：

519.35

Exact Mass：

518.09133

EC Number：

255-467-5

Characteristics

PSA：

145

DISPERSE BLUE 257 Use and Manufacturing

Methods of Manufacturing

It uses 2-bromo-4-nitro-6-cyanoaniline and 3-acetylamino-N, N-bis(methoxyethyl)aniline as raw materials. First, the former is diazotized, and then coupled with the latter to obtain the product. After filtering, grinding and drying, the finished product is obtained.

Uses

Disperse Blue S-2RF is suitable for dyeing and printing of polyester and its blended fabrics, resulting in red light blue. The dyeing fastness is excellent.