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Naphthol AS-D

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Naphthol AS-D Basic information

Product Name:
Naphthol AS-D
Synonyms:
  • 1-(2',3'-Hydroxynaphthoylamino)-2-methylbenzene
  • 2-Naphtho-o-toluidide, 3-hydroxy-
  • 3-hydroxy-n-(2-methylphenyl)-2-naphthalenecarboxamid
  • Acco Naf-Sol AS-D
  • Acco Naphthol AS-D
  • Acna Naphthol E
  • AcnaNaphtholE
  • Amanil Naphthol AS-D
CAS:
135-61-5
MF:
C18H15NO2
MW:
277.32
EINECS:
205-205-0
Product Categories:
  • Substrates
  • Intermediates of Dyes and Pigments
Mol File:
135-61-5.mol
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Naphthol AS-D Chemical Properties

Melting point:
196-198 °C
Boiling point:
399.7±35.0 °C(Predicted)
Density 
1.277±0.06 g/cm3(Predicted)
Colour Index 
37520
form 
powder to crystal
pka
8.73±0.40(Predicted)
color 
White to Gray to Brown
NIST Chemistry Reference
2-Naphthalenecarboxamide, 3-hydroxy-n-(2-methylphenyl)-(135-61-5)
EPA Substance Registry System
2-Naphthalenecarboxamide, 3-hydroxy-N-(2-methylphenyl)- (135-61-5)
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Safety Information

Hazard Codes 
N
Risk Statements 
50/53
Safety Statements 
60-61
RIDADR 
UN 3077 9/PG 3
WGK Germany 
2
HazardClass 
9
PackingGroup 
III

MSDS

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Naphthol AS-D Usage And Synthesis

Preparation

O-Methylaniline and 3-Hydroxy-2-naphthoic acid condensation.

Flammability and Explosibility

Nonflammable

Purification Methods

Purify it by recrystallisation from xylene. This gives yellow-green fluorescent solutions at pH 8.2-9.5. [IR: Schnopper et al. Anal Chem 31 1542 1959.] The naphthol AS-D acetate is obtained with AcCl, m 168-169o, and with chloroacetyl chloride naphthol AS-D-chloroacetate is obtained [Moloney et al. J Histochem Cytochem 8 200 1960, Burstone Arch Pathology 63 164 1957]. [Beilstein 12 H 505.]

Properties and Applications

yellowish powder, melting point for 195 ~ 196 ℃. Insoluble in water solution and sodium carbonate, soluble in naphtha. In sodium hydroxide solution for yellow. Sensitive to air. Mainly used for cotton yarns, cotton fabric, PVA, viscose, silk and vinegar fiber dyeing, also can be used for direct printing, the cotton print and dye discharge printing, and can be used as a quick pigment and organic pigments intermediate. The affinity of cotton is low, medium coupled ability.

Naphthol AS-D Preparation Products And Raw materials

Raw materials

Preparation Products

Naphthol AS-DSupplier

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