Naphthalene-2,7-disulfonic acid

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Naphthalene-2,7-disulfonic acid Basic information

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Product Name:

Naphthalene-2,7-disulfonic acid

Synonyms:

naphthalene-2,7-disulfonic acid;2,7-NAPHTHALENE DISULFONIC ACID;naphthalene-2,7-disulphonic acid;3,6-Naphthalenedisulfonic acid;Ebert-Merz α-acid

CAS:

92-41-1

MF:

C10H8O6S2

MW:

288.3

EINECS:

202-154-6

Product Categories:

Intermediates of Dyes and Pigments

Mol File:

92-41-1.mol

Naphthalene-2,7-disulfonic acid Structure

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Naphthalene-2,7-disulfonic acid Chemical Properties

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Melting point

199°C

Boiling point

400.53°C (rough estimate)

density

1.6867 (rough estimate)

refractive index

1.6950 (estimate)

CAS DataBase Reference

92-41-1(CAS DataBase Reference)

EPA Substance Registry System

2,7-Naphthalenedisulfonic acid (92-41-1)

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Naphthalene-2,7-disulfonic acid Usage And Synthesis

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Chemical Properties

White, crystalline solid.Soluble in water. Combustible.

Uses

Intermediate for dyes.

Definition

ChEBI: A naphthalenesulfonic acid in which the sulfo groups are attached to positions 2 and 7 of the naphthalene ring.

Purification Methods

Crystallise the acid from conc HCl. The disulfonamide has m 273o (from EtOH). [Beilstein 11 II 119, 11 III 463.]

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Naphthalene-2,7-disulfonic acid Preparation Products And Raw materials

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Preparation Products

1,8-Dihydroxynaphthylene-3,6-disulfonic acid-->ERIO GREEN B

Product Name	Naphthalene-2,7-disulfonic acid
CAS No	92-41-1
EC-No	202-154-6
Min. Order	1ASSAYS
Purity	99%
Supply Ability	100KG
Release date	2020/01/08

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