DISPERSE BLUE 257
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DISPERSE BLUE 257
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CAS No:
84931-03-3
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Formula:
C21H23BrN6O5
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Chemical Name:
DISPERSE BLUE 257
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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
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CAS No:
DISPERSE BLUE 257 Use and 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.
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.
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