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4,5-dihydroxynaphthalene-1-sulphonic acid

4,5-dihydroxynaphthalene-1-sulphonic acid structure

CAS No.: 83-65-8

Chemical Name:: 4,5-dihydroxynaphthalene-1-sulphonic acid

Synonyms: 4,5dihydroxynaphthalene-1-sulfonic acid;4,5-Dihydroxy-1-naphthalenesulfonic acid;4,5-dihydroxynaphthalene-1-sulphonic acid;1-Naphthalenesulfonic acid, 4,5-dihydroxy-

CBNumber:: CB4892298

Molecular Formula:: C10H8O5S

Molecular Weight:: 240.23

MDL Number:

MOL File:: 83-65-8.mol

Last updated:2023-11-02 14:15:33

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4,5-dihydroxynaphthalene-1-sulphonic acid Properties

Density	1.677±0.06 g/cm3(Predicted)
pka	0.82±0.40(Predicted)
EPA Substance Registry System	4,5-Dihydroxy-1-naphthalenesulfonic acid (83-65-8)

4,5-dihydroxynaphthalene-1-sulphonic acid Chemical Properties,Uses,Production

Description

4,5-Dihydroxynaphthalene-1-sulfonic acid [83-65-8]. (1,8-dihydroxynaphthalene-4- sulfonic acid), dioxy Chicago acid, dioxy S acid, C10H8O5S, Mr 240.2, is sparingly soluble in water, but the sodium salt is readily soluble. Heating with dilute sulfuric acid at 150℃ gives 1,8-dihydroxynaphthalene.

Production Methods

1-Hydroxynaphthalene-4,8- disulfonic acid is heated with 82 % caustic soda liquor for 3 h at 235℃. The melt is poured into excess hydrochloric acid and sulfur dioxide is expelled. After cooling, the product is filtered off and washed with brine; the yield is 83 %.

4,5-dihydroxynaphthalene-1-sulphonic acid Preparation Products And Raw materials

Raw materials

Sodium hydroxide

Preparation Products

1-Naphthalenesulfonic acid, 4,5-dihydroxy-3-[(4-sulfophenyl)azo]-, disodium salt Direct Black 24 Direct Green 22 Benzoic acid, 3-[[4-[(1,8-dihydroxy-4-sulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-2(or 6)-hydroxy-, disodium salt 4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt

Direct blue 26, trisodium salt Acid Black 5 Direct Blue 157

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4,5-dihydroxynaphthalene-1-sulphonic acid Suppliers

Global( 4)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28172	58
Hu Bei Jiutian Bio-medical Technology CO.,Ltd	027-88013699 17354350817	Ryan@jiutian-bio.com	China	6001	58

Supplier	Advantage
Hubei Jusheng Technology Co.,Ltd.	58
Hu Bei Jiutian Bio-medical Technology CO.,Ltd	58

4,5-dihydroxynaphthalene-1-sulphonic acid 4,5-Dihydroxy-1-naphthalenesulfonic acid 4,5dihydroxynaphthalene-1-sulfonic acid 1-Naphthalenesulfonic acid, 4,5-dihydroxy- 83-65-8