1-Naphthalenesulfonic acid Chemical Properties

Melting point:

77-79 °C(lit.)

Boiling point:

317.43°C (rough estimate)

Density 

1.3797 (rough estimate)

refractive index 

1.4998 (estimate)

storage temp. 

Store below +30°C.

solubility 

alcohol: freely soluble

pka

0.17±0.10(Predicted)

Water Solubility 

freely soluble

Merck 

14,6376

CAS DataBase Reference

85-47-2(CAS DataBase Reference)

NIST Chemistry Reference

1-Naphthalenesulfonic acid(85-47-2)

EPA Substance Registry System

1-Naphthalenesulfonic acid (85-47-2)

Safety Information

Hazard Codes 

C,F

Risk Statements 

34-11-35

Safety Statements 

26-36/37/39-45-28A-16

RIDADR 

UN 2583 8/PG 2

WGK Germany 

1

HazardClass 

8

PackingGroup 

III

HS Code 

29041000

MSDS

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1-Naphthalenesulfonic acid Usage And Synthesis

Chemical Properties

grey fine crystalline powder

Purification Methods

Crystallise the acid from conc HCl and twice from H2O. The S-benzylisothiuronium salt has m 137o (from aqueous EtOH). [Beilstein 11 H 155, 11 III 383, 11 IV 521.]

1-Naphthalenesulfonic acid(85-47-2)Related Product Information

• Sodium 2-naphthalenesulfonate
• Ethyl 2-(Chlorosulfonyl)acetate
• Glycine
• Citric acid
• Naphthalene-2-sulfonic acid
• Ascoric Acid
• Naphthalene
• Taurine
• phosphoric acid
• LUXOL FAST BLUE ARN
• 6-(5-CHLORO-2-HYDROXY-4-SULFOPHENYLAZO)-5-HYDROXY-1-NAPHTHALENESULFONIC ACID, DISODIUM SALT
• C.I. 14720
• ACID BLUE 120
• 1,3,6-NAPHTHALENETRISULFONIC ACID, SODIUM SALT, HYDRATE, MIXTURE OF ISOMERS
• ACID BLUE 113
• ACID RED 4
• 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-6-nitro-4-naphthalenesulfonic acid, sodium salt,1-Naphthalenesulfonic acid, 3-hydroxy-4-[(1-hydroxy-2-naphthyl)azo]-7-nitro-, monosodium salt
• ACID RED 114