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)

pka

8.73±0.40(Predicted)

form 

powder to crystal

Colour Index 

37520

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)

Safety Information

Hazard Codes 

N

Risk Statements 

50/53

Safety Statements 

60-61

RIDADR 

UN 3077 9/PG 3

WGK Germany 

2

HS Code 

2924.29.7790

HazardClass 

9

PackingGroup 

III

MSDS

• Language:English Provider:SigmaAldrich

Naphthol AS-D Usage And Synthesis

Preparation

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

Flammability and Explosibility

Non flammable

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(135-61-5)Related Product Information

• Naphtol AS-LT.
• Naphtol AS-BOLL,Naphtol AS-BO
• Naphtol AS-OL
• Naphtol As-lgll,Naphtol AS-IRG
• NAPHTOL AS-LC
• Naphtol AS-BS
• Naphthol AS
• Naphthol AS-E
• 2-[2-HYDROXY-3-(2,4-XYLYLCARBAMOYL)-1-NAPHTHYLAZO]PHENOL
• NAPHTHOL AS-MX ACETATE
• NAPHTHOL AS-MX
• N-(5-Chloro-2-methylphenyl)-3-hydroxynaphthalene-2-carboxamide
• NAPHTHOL AS-TR ACETATE
• NAPHTHOL AS-D CHLOROACETATE
• Nitrazine Yellow
• alpha-naphto
• (S)-(-)-3,3-Dibromo-1,1-bi-2-naphtol
• (R)-(+)-3,3-Dibromo-1,1-bi-2-naphtol