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DIRECT SCARLET B

Basic information Safety Supplier Related

DIRECT SCARLET B Basic information

Product Name:
DIRECT SCARLET B
Synonyms:
  • directscarlet
  • DIAMINE SCARLET B
  • CHLORAMINE RED B
  • DIRECT SCARLET B
  • AMIDINE SCARLET B
  • disodium 8-[[4'-[(4-ethoxyphenyl)azo][1,1'-biphenyl]-4-yl]azo]-7-hydroxynaphthalene-1,3-disulphonate
  • Diamine Scarlet BA-CF
  • Direct Fast Scarlet B
CAS:
3530-19-6
MF:
C30H25N4NaO8S2
MW:
656.66
EINECS:
222-560-7
Mol File:
3530-19-6.mol
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DIRECT SCARLET B Chemical Properties

storage temp. 
Amber Vial, Refrigerator, Under inert atmosphere
solubility 
DMSO (Slightly), Methanol (Slightly), Water (Slightly)
Colour Index 
22240
form 
Solid
color 
Very Dark Red
CAS DataBase Reference
3530-19-6
EPA Substance Registry System
C.I. Direct Red 37, disodium salt (3530-19-6)
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Safety Information

HS Code 
3204.14.5000
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DIRECT SCARLET B Usage And Synthesis

Uses

Direct Scarlet B is a dye used with textiles. It is a water pollutant, removed via chitin adsorption.

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first and 7-Hydroxynaphthalene-1,3-disulfonic acid coupling, again with phenol coupling, and then in contain sodium carbonate in aqueous solution of ethanol heating, air pressure,Using Chloroethane to make phenol??hydroxy ethylated?.

Properties and Applications

red. Soluble in water for red, slightly soluble in alcohol, acetone and soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid for dark purple, after diluted brown precipitation; In nitric acid solution for colourful red. The dye solution to join strong hydrochloric acid have orange brown precipitation; Add thick sodium hydroxide solution for red orange, precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3-4 4 2 1-2 1-2
AATCC 3 5 2-3 1 1

DIRECT SCARLET BSupplier

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