Direct Red 257
Direct Red 257 Basic information
- Product Name:
- Direct Red 257
- Synonyms:
-
- Direct Red 257
- C.I.Direct Red 257:C.I.291755
- MW:
- 0
- Mol File:
- Mol File
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Direct Red 257 Usage And Synthesis
Preparation
4-Aminobenzenesulfonic acid (2 Moore) diazo, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling, and then into 2-(2-Hydroxyethylamino)ethanol(C.I. 29176) (the components of the dye content is 25%). 4-Amino-5-methoxy-2-methylbenzenesulfonic acid (2 Moore) diazo, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling, and then into?2-(2-Hydroxyethylamino)ethanol?(C.I. 29177) (the components of the dye content is 75%).
Properties and Applications
red. Mainly used for paper color
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Direct Red 257()Related Product Information
- Direct Red 243:1
- 2-Naphthalenesulfonic acid, 7-[[4,6-bis[(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[2-[4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-, sodium salt (1:2)
- C.I. Direct Red 259
- Direct Red 242
- 2-[[1-Hydroxy-6-[[[[5-hydroxy-6-[(2-hydroxy-5-nitrophenyl)azo]-7-sulfo-2-naphtyl]amino]carbonyl]amino]-3-sulfo-2-naphtyl]azo]benzoic acid trisodium salt
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- Direct Red 255
- DIRECT RED 26