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4-amino-5-hydroxynaphthalene-1,3-disulphonic acid

CAS No.: 82-47-3

Chemical Name:: 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid

Synonyms: 8-Amino-5,7-disulfo-1-naphthol;8,1,5,7-Aminonaphtholdisulfonic acid;1-Amino-8-naphthol-2,4-disulfonic acid;8-Amino-1-hydroxy-5,7-disulfonaphthalene;4-amino-5-hydroxynaphthalene-1,3-disulfonicaci;1-AMino-8-naphthol-2,4-disulfonic acid(SS Acid);4-Amino-5-hydroxy-1,3-naphthalenedisulfonic acid;4-Amino-5-Hydorxy-1,3-Naphthalenedisulfonic Acid;4-amino-5-hydroxynaphthalene-1,3-disulfonic acid;1-Amino-8-hydroxynaphthalene-2,4-disulfonic acid

CBNumber:: CB7925021

Molecular Formula:: C10H9NO7S2

Molecular Weight:: 319.31

MOL File:: 82-47-3.mol

MSDS File:: SDS

Modify Date:: 2024/12/18 14:08:57

Request For Quotation

4-amino-5-hydroxynaphthalene-1,3-disulphonic acid Properties

EPA Substance Registry System	1,3-Naphthalenedisulfonic acid, 4-amino-5-hydroxy- (82-47-3)

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS05
Signal word	Danger
Hazard statements	H314
Precautionary statements	P260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501

4-amino-5-hydroxynaphthalene-1,3-disulphonic acid Chemical Properties,Uses,Production

Chemical Properties

1-Amino-8-hydroxynaphthalene-2,4-disulfonic acid [82-47-3]. (4-amino-5-hydroxynaphthalene-1,3-disulfonic acid), Chicago acid, 2 S acid, C10H9NO7S2, Mr 319.3, and its acid sodium salt are readily soluble in water; the latter can be salted out with sodium chloride. In alkaline solution, coupling with diazo compounds takes place ortho to the hydroxyl group. Alkaline hydrolysis at 170℃ gives 1,8-dihydroxynaphthalene-2,4-disulfonic acid. Heating with dilute sulfuric acid results in desulfonation to give 1-amino-8-hydroxynaphthalene-2-sulfonic acid.

Uses

Chicago acid is used as a coupling component for C.I. Direct Blue 1, C.I. Direct Blue 22, and C.I. Direct Blue 76 (the dicopper complex of demethylated).

Production Methods

A solution of the disodium salt of naphthosultam-2,4-disulfonic acid is concentrated and mixed with potassium hydroxide liquor at 130℃. The temperature is raised to 155℃ over 20 h to complete the reaction. After being cooled and diluted with water, the melt is run into excess hydrochloric acid and the monopotassium salt is collected by filtration at 30℃ and slurry washed with recycling of the wash liquors. A yield of 87 % is obtained.

4-amino-5-hydroxynaphthalene-1,3-disulphonic acid Preparation Products And Raw materials

Raw materials

Hydrochloric acid Potassium hydroxide

Preparation Products

Evans Blue C.I. Direct green 21 CHICAGO SKY BLUE 6B 4-Amino-5-hydroxy-6-[[4'-[(1-hydroxy-6-phenylamino-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-1,3-disulfonic acid disodium salt C.I. Direct Blue, heptasodium salt

Direct blue 126 (C.I. 34010) Direct blue 215 (C.I. 24415) DIRECT BLUE 76 CHLORAZOL BLUE RW 1,3-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-6-[[3-[6-hydroxy-7-[(2-methoxyphenyl)azo]-8-sulfo-1H-naphth[1,2-d]imidazol-2-yl]phenyl]azo]-, trisodium salt

4-Amino-5-hydroxy-6-[(2,3,5-trichloro-6-hydroxyphenyl)azo]-1,3-naphthalenedisulfonic acid disodium salt Cuprate(2-), [4-amino-5-(hydroxy-κO)-6-[[2-(hydroxy-κO)-5-nitrophenyl]azo-κN1]-1,3-naphthalenedisulfonato(4-)]-, disodium Direct Green 21:1

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4-amino-5-hydroxynaphthalene-1,3-disulphonic acid Suppliers

Global( 17)Suppliers

Supplier	Tel	Country	ProdList	Advantage	Inquiry
PARAGON FINE AND SPECIALITY CHEMICAL PVT LTD	+91 9909190838	Ahmedabad, India	66	58	Inquiry
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	China	21628	55	Inquiry
Dideu Industries Group Limited	+86-29-89586680 +86-15129568250	China	22854	58	Inquiry
Suzhou ARTK Medchem Co., Ltd.	+86-512-68323658 +86-18168183658	China	39003	58	Inquiry
DAYANG CHEM (HANGZHOU) CO.,LTD	+8617705817739	China	53881	58	Inquiry
Amadis Chemical Company Limited	571-89925085	China	131957	58	Inquiry
BOC Sciences	1-631-485-4226; 16314854226	United States	12952	65	Inquiry
Hefei Mokai Pharmaceutical Technology Co., Ltd	19355912709	China	5481	58	Inquiry
Changzhou Bojia Biomedical Technology Co., Ltd.	2122619822	China	18478	58	Inquiry
NINGBO JL NEW MATERIAL CO.,LTD	0574 88552218 57488552216	China	908	58	Inquiry

Supplier	Advantage
PARAGON FINE AND SPECIALITY CHEMICAL PVT LTD	58
Henan Tianfu Chemical Co.,Ltd.	55
Dideu Industries Group Limited	58
Suzhou ARTK Medchem Co., Ltd.	58
DAYANG CHEM (HANGZHOU) CO.,LTD	58
Amadis Chemical Company Limited	58
BOC Sciences	65
Hefei Mokai Pharmaceutical Technology Co., Ltd	58
Changzhou Bojia Biomedical Technology Co., Ltd.	58
NINGBO JL NEW MATERIAL CO.,LTD	58

82-47-3(4-amino-5-hydroxynaphthalene-1,3-disulphonic acid)Related Search:

CHLORAZOL BLUE RW 1-AMINO-8-NAPHTHOL-2,4-DISULFONIC ACID MONOSODIUM SALT CHICAGO SKY BLUE 6B 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid Evans Blue

CHICAGO ACID

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4-amino-5-hydroxynaphthalene-1,3-disulphonic acid 1-Amino-8-hydroxynaphthalene-2,4-disulfonic acid 4-amino-5-hydroxynaphthalene-1,3-disulfonic acid 4-Amino-5-Hydorxy-1,3-Naphthalenedisulfonic Acid 1-Amino-8-naphthol-2,4-disulfonic acid 4-Amino-5-hydroxy-1,3-naphthalenedisulfonic acid 8-Amino-1-hydroxy-5,7-disulfonaphthalene 8-Amino-5,7-disulfo-1-naphthol 8,1,5,7-Aminonaphtholdisulfonic acid 4-azanyl-5-hydroxy-naphthalene-1,3-disulfonic acid 1-AMino-8-naphthol-2,4-disulfonic acid(SS Acid) 1,3-Naphthalenedisulfonic acid, 4-amino-5-hydroxy- 4-amino-5-hydroxynaphthalene-1,3-disulfonicaci 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid ISO 9001：2015 REACH 82-47-3 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid 82-47-3 Intermediates of Dyes and Pigments