ChemicalBook Product Catalog Dyes and Pigments dye Direct Dyes Direct Red 23

Direct Red 23

Direct Red 23 Basic information
Product Name:Direct Red 23
Synonyms:BENZO FAST SCARLET;CI 29160;Disodium 3-[(4-acetamidophenyl)azo]-4-hydroxy-7-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]naphthalene-2-sulphonate;2-naphthalenesulfonicacid,3-((4-(acetylamino)phenyl)azo)-4-hydroxy-7-((((5-hy;2-naphthalenesulfonicacid,3-[[4-(acetylamino)phenyl]azo]-4-hydroxy-7-[[[[5-hy;airedalescarlet4bd;aizenprimulascarlet4bsh;amanilfastscarlet4bs
CAS:3441-14-3
MF:C35H28N7NaO10S2
MW:793.76
EINECS:222-348-4
Product Categories:D;Stains and Dyes;Stains&Dyes, A to;Organics;Dyes and Pigments
Mol File:3441-14-3.mol
Direct Red 23 Structure
Direct Red 23 Chemical Properties
Colour Index 29160
CAS DataBase Reference3441-14-3(CAS DataBase Reference)
EPA Substance Registry SystemC.I. Direct Red 23, disodium salt (3441-14-3)
Safety Information
WGK Germany 2
RTECS QK1237500
MSDS Information
ProviderLanguage
SigmaAldrich English
Direct Red 23 Usage And Synthesis
Preparationaniline and N-(4-aminophenyl)acetamide diazo respectively, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling.
HazardLow toxicity by ingestion.
Properties and Applicationsred. Purple powder. Soluble in water for colourful red, solubility of 30 g/L (80 ° C), soluble in ethanol for orange, insoluble in acetone. The strong sulfuric acid was great red to product red, diluted light orange for palm. The dye solution to generate strong hydrochloric acid wine red precipitate; Add 10% sulfuric acid into a light blue; Add thick sodium hydroxide solution for red orange; Add 10% sodium carbonate (no change solution. Cellulose fiber of dyeing, dye devoured rate is very good, in the 80 ~ 100 ℃, affinity is the largest. Resistant to acid is very good. Copper ions in dyeing color shade darker; Iron ion in the same light. Mainly used in viscose etc of cellulose fiber dyeing, also can be used for silk, wool, paper and pulp dyeing, also can be used in the manufacture color which have pigment.
Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 5 5 2-3 2 2
AATCC 5 5 2-3 4 2
Sodium o-aminobenzenesulfonate N-ETHYL-4-AMINOAZOBENZENE 7-AMINO-2-NAPHTHALENESULFONIC ACID SODIUM SALT DIMETHYL UREA 1-METHYL-3-PHENYLUREA 6,6'-Ureylene-bis(1-naphthol-3-sulfonic acid) Direct Red 23 Disodium 7,7'-(carbonyldiimino)bis(4-hydroxynaphthalene-2-sulphonate) ammonium naphthalenesulphonate J acid 2-AMINO-1-NAPHTHOL Sodium 2-naphthalenesulfonate DIRECT SCARLET 4BS 6-AMINO-1-NAPHTHOL 4-(METHYLAMINO)AZOBENZENE FU 3-Hydroxythiophenol 1-NAPHTHOL-3-SULFONIC ACID SODIUM SALT
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