1-naphthol-4,7-disulfonic acid

CAS No.: 6361-37-1

Chemical Name:: 1-naphthol-4,7-disulfonic acid

Synonyms: 1-naphthol-4,7-disulfonic acid;4-hydroxynaphthalene-1,6-disulfonic acid;1,6-Naphthalenedisulfonic acid, 4-hydroxy-

CBNumber:: CB4967677

Molecular Formula:: C10H8O7S2

Molecular Weight:: 304.3

MOL File:: 6361-37-1.mol

Modify Date:: 2023/11/1 14:42:24

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1-naphthol-4,7-disulfonic acid Chemical Properties,Uses,Production

Chemical Properties

1-Hydroxynaphthalene-4,7-disulfonic acid [6361-37-1]. (4-hydroxynaphthalene-1,6- disulfonic acid), D(Dahl’s)acid, C10H8O7S2, Mr 304.3: its alkali-metal salts are readily soluble in water. Boiling with 65 % sulfuric acid results in desulfonation and formation of 1-hydroxynaphthalene-7-sulfonic acid. Diazo coupling and nitrosation take place in the 2-position.

Production Methods

1-Aminonaphthalene-4,7-disulfonic acid is heated with sodium bisulfite under conditions similar to those described for the production of 1-hydroxynaphthalene-4-sulfonic acid from sodium naphthionate. High yields of 1-Aminonaphthalene-4,7-disulfonic acid have been claimed via sulfonation of 1-(dichlorophosphinyloxy)naphthalene (1-naphthol+ POCl3).
1-naphthol-4,7-disulfonic acid synthesis

1-naphthol-4,7-disulfonic acid Preparation Products And Raw materials

Raw materials

Sodium 4-amino-1-naphthalenesulfonate 1-Naphthylamine-7-sulfonic acid 4-AMINO-1-NAPHTHALENESULFONIC ACID SODIUM SALT Sodium bisulfite

Preparation Products

NAPHTHOL YELLOW S

1-naphthol-4,7-disulfonic acid Suppliers

Global( 2)Suppliers

Supplier	Tel	Country	ProdList	Advantage	Inquiry
Dynasty Colourants Co., Ltd.	86 0574 27862107 27862719	China	3306	51	Inquiry

Supplier	Advantage
Dynasty Colourants Co., Ltd.	51

1-naphthol-4,7-disulfonic acid 4-hydroxynaphthalene-1,6-disulfonic acid 1,6-Naphthalenedisulfonic acid, 4-hydroxy- 6361-37-1