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HomeProduct name listDirect Red 257

Direct Red 257

  • Molecular Weight: 0

What is Direct Red 257?

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

Safety information for Direct Red 257

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