1-Amino-2-naphthol hydrochloride Chemical Properties

Melting point:

250 °C (dec.)(lit.)

storage temp. 

Hygroscopic, Refrigerator, under inert atmosphere

solubility 

DMSO (Slightly), Methanol (Slightly)

form 

Solid

color 

Purple

Water Solubility 

Soluble

Sensitive 

Light Sensitive

BRN 

3699817

InChIKey

DEKREBCFNLUULC-UHFFFAOYSA-N

CAS DataBase Reference

1198-27-2(CAS DataBase Reference)

EPA Substance Registry System

2-Naphthalenol, 1-amino-, hydrochloride (1198-27-2)

Safety Information

Hazard Codes 

Xn,Xi

Risk Statements 

20/21/22-36/37/38-40

Safety Statements 

26-27-36/37/39

WGK Germany 

3

RTECS 

QL3335000

Hazard Note 

Irritant

TSCA 

Yes

HS Code 

29222990

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

1-Amino-2-naphthol hydrochloride Usage And Synthesis

Chemical Properties

lilac to light grey fluffy powder

Uses

1-Amino-2-naphthol hydrochloride was used in a study on degradation of the azo dye Acid Orange 7 in batch anaerobic unstirred assay.

General Description

1-Amino-2-naphthol undergoes condensation with methylene-substituted azaheterocycles in presence of an oxidizing agent to yield photochromic spirooxazines.

Purification Methods

Crystallise the salt from the minimum volume of hot water containing a few drops of stannous chloride in an equal weight of hydrochloric acid (to reduce atmospheric oxidation). Filter the solution and add half its volume of conc HCl and set aside. The salt crystallises almost quantitatively. Dry it in a vacuum in the dark (m 260o). The salt is more stable than the free base which has m 150o (darkening at 130o) and its O-methyl ether has m 49o and b 159-159o/9mm. [Desai et al. J Chem Soc 324 1938, Beilstein 13 H 666, 13 I 268, 13 II 408, 13 III 1875, 13 IV 2080.]

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