Direct Red 257

Direct Red 257 structure

CAS No.

Chemical Name:: Direct Red 257

Synonyms: Direct Red 257;C.I.Direct Red 257:C.I.291755

CBNumber:: CB39703015

Molecular Formula:

Molecular Weight:: 0

MDL Number:

MOL File:: Mol file

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Direct Red 257 Chemical Properties,Uses,Production

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

Direct Red 257 Preparation Products And Raw materials

Raw materials

4-Amino-5-methoxy-2-methylbenzensulfonic acid Sulfanilic acid 6,6'-Ureylene-bis(1-naphthol-3-sulfonic acid) Diethanolamine

Preparation Products

(Direct Red 257)Related Search:

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

DIRECT RED 254 DIRECT RED 243 Direct Red 255 DIRECT RED 26

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Direct Red 257 C.I.Direct Red 257:C.I.291755