1,7-Dihydroxynaphthalene Chemical Properties

Melting point:

180-184 °C (lit.)

Boiling point:

246.06°C (rough estimate)

Density 

1.0924 (rough estimate)

refractive index 

1.5418 (estimate)

Flash point:

252 °C

storage temp. 

Sealed in dry,Room Temperature

solubility 

DMSO (Slightly), Methanol (Slightly)

pka

9.58±0.40(Predicted)

form 

Solid

color 

Beige to Dark Brown

Water Solubility 

Slightly soluble in water.

λmax

335nm(Cyclohexane)(lit.)

BRN 

1908499

CAS DataBase Reference

575-38-2(CAS DataBase Reference)

NIST Chemistry Reference

1,7-Dihydroxynaphthalene(575-38-2)

EPA Substance Registry System

Napthalene-1,7-diol (575-38-2)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36-37/39-36/37

WGK Germany 

2

RTECS 

QJ4746666

TSCA 

Yes

HS Code 

29072900

MSDS

• Language:English Provider:1,7-Naphthalenediol
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

1,7-Dihydroxynaphthalene Usage And Synthesis

Chemical Properties

Yellowish to white powder. 1,7-Naphthalenediol [575-38-2], mp 181℃, is prepared by caustic fusion of 2-hydroxynaphthalene-8-sulfonic acid at 300℃ or by acid desulfonation of 2,8-dihydroxynaphthalene-6- sulfonic acid. It couples with diazotized anilines to form monoazo and disazo derivatives.

Uses

The preparation of 1,7-Dihydroxynaphthalene and its prompt characterization from its NMR data and peculiarities. Removal of dihydroxynaphthalenes from aqueous solution with the aid of an oxidoreductase polyphenol oxidase and biopolymer chitosan.

Application

1,7-Dihydroxynaphthalene is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.

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