ChemicalBook Product Catalog Dyes and Pigments dye Acid dye CROCEIN SCARLET 7B

CROCEIN SCARLET 7B

CROCEIN SCARLET 7B Basic information
Product Name:CROCEIN SCARLET 7B
Synonyms:CROCEIN SCARLET 7B;CI 27165;CI NO 27165;ACID RED 71;ACID ORANGE 12;CROCEIN SCARLET 7B C.I. NO. 27165;1-Naphthalenesulfonic acid, 7-hydroxy-8-2-methyl-4-(2-methyl-4-sulfophenyl)azophenylazo-, disodium salt;C.I. ACID RED 71)
CAS:6226-76-2
MF:C24H18N4Na2O7S2
MW:584.53
EINECS:612-981-8
Product Categories:
Mol File:6226-76-2.mol
CROCEIN SCARLET 7B Structure
CROCEIN SCARLET 7B Chemical Properties
Melting point 181-188℃
Colour Index 27165
form Powder
Water Solubility Soluble in water
Safety Information
Safety Statements 22-24/25
WGK Germany 3
MSDS Information
CROCEIN SCARLET 7B Usage And Synthesis
UsesCrocein Scarlet 7B is used in Crowle’s reagent. The reagent is needed for observing latent fingerprints, particularly bloody prints. Dyes and metabolites.
Preparation2′,3-Dimethyl-4-amino-4′-sulfoazobenzene?diazo, and 7-Hydroxynaphthalene-1-sulfonic acid coupling.
Properties and Applicationsred. Soluble in water for product red, soluble in ethanol for red orange. The strong sulfuric acid for blue, pink is diluted. In water solution to join strong hydrochloric acid for product red; Add thick sodium hydroxide solution for shallow red sauce.
Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 5-6 2-3 2-3 2 1 2-3
CROCEIN SCARLET 7B Preparation Products And Raw materials
Raw materials7-hydroxynaphthalene-1-sulphonic acid-->6-[(4-amino-m-tolyl)azo]toluene-3-sulphonic acid
ACID RED 80 1-Naphthalenesulfonic acid, 4-amino-3-[2-(4-nitrophenyl)diazenyl]-, sodium salt (1:1) Solvent Orange 2 CROCEIN SCARLET BRILLIANT CROCEIN SCARLET 3BA Acid Red 18 Acid Red 73 Solvent Red 23 ACID RED 151 2-Aminotoluene-5-sulfonic acid 7-hydroxynaphthalene-1-sulphonic acid Solvent Red 24 O-AMINOAZOTOLUENE CROCEIN SCARLET 7B O-TOLUIDINE-4-SULFONIC ACID SODIUM SALT 4'-Aminoazobenzene-4-sulphonic acid Acid Scarlet Red CALCOCID CROCEIN SCARLET MOO
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