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J acid

CAS No.: 87-02-5

Chemical Name:: J acid

Synonyms: 6-Amino-1-naphthol-3-sulfonic Acid Hydrate;I-ACID;J ACID;kyselinai;Iso-γ acid;isogammaacid;aminonaphthol;87-02-5 J acid;J acid ISO 9001：2015 REACH;AMINO-NAPHTHOL SULFONIC ACID

CBNumber:: CB5264771

Molecular Formula:: C10H9NO4S

Molecular Weight:: 239.25

MOL File:: 87-02-5.mol

MSDS File:: SDS

Modify Date:: 2025/1/27 9:38:02

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J acid Properties

Density	1.4338 (rough estimate)
vapor pressure	0Pa at 25℃
refractive index	1.6500 (estimate)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
solubility	Slightly soluble in water
form	powder
pka	-0.28±0.40(Predicted)
color	yellow
Water Solubility	5g/L at 20℃
InChIKey	KYARBIJYVGJZLB-UHFFFAOYSA-N
LogP	-1.39
CAS DataBase Reference	87-02-5(CAS DataBase Reference)
EPA Substance Registry System	7-Amino-4-hydroxy-2-naphthalenesulfonic acid (87-02-5)

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS08

Signal word

Warning

Hazard statements

H320-H341

Precautionary statements

P201-P202-P264-P280-P305+P351+P338+P337+P313-P308+P313-P405-P501

Hazard Codes

Risk Statements

Safety Statements

26-27-36/37/39

RIDADR

UN 2585 8/PG 3

WGK Germany

RTECS

QK1295500

HazardClass

PackingGroup

III

HS Code

2922190090

Toxicity

LD50 oral in rat: 11500mg/kg

NFPA 704

	0
3		0

J acid price More Price(4)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich(India)	08800	7-Amino-4-hydroxy-2-naphthalenesulfonic acid technical, ≥90% (T)	87-02-5	100G	₹8042.98	2022-06-14	Buy
TCI Chemicals (India)	A0370	6-Amino-1-naphthol-3-sulfonic Acid	87-02-5	25G	₹2000	2022-05-26	Buy
TCI Chemicals (India)	A0370	6-Amino-1-naphthol-3-sulfonic Acid	87-02-5	500G	₹9300	2022-05-26	Buy
ottokemi	A 1956	7-Amino-4-hydroxy-2-naphthalenesulphonic acid 90%	87-02-5	100gm	₹8001	2022-05-26	Buy

Product number	Packaging	Price	Buy
08800	100G	₹8042.98	Buy
A0370	25G	₹2000	Buy
A0370	500G	₹9300	Buy
A 1956	100gm	₹8001	Buy

J acid Chemical Properties,Uses,Production

Chemical Properties

Gray needles, white when pure. Soluble in hot water; sparingly soluble in cold water. 2-Amino-5-hydroxynaphthalene-7-sulfonic acid [87-02-5]. (7-amino-4-hydroxynaphthalene-2-sulfonic acid), J acid, C10H9NO4S, Mr 239.2, is only slightly soluble (0.1 %) in cold water but readily soluble at 100℃. The alkalimetal salts are readily soluble in water. Diazo compounds are normally coupled with J acid under alkaline conditions with reaction in the 6-position (ortho to hydroxyl); however, under acid conditions, coupling can occur in the 1- position. Reaction with bisulfite gives 4,7-dihydroxynaphthalene-2-sulfonic acid. The N-acylation, Nalkylation, and N-arylation reactions are important.

Uses

Azo dye intermediate.

Production Methods

A concentrated disodium salt solution of 2-aminonaphthalene-5,7-disulfonic acid is added to 72 % sodium hydroxide at 150 ℃. After heating to 187℃ over 10 h reaction is continued at this temperature for a further 8 h until completion of the reaction is indicated by giving equivalent diazotization and coupling titers for a worked-up sample. Quenching, acidification, purging of sulfur dioxide, and filtration at 55 ℃ followed by washing with water at 50℃ result in an 88 % yield of paste. Purification by salting out the sodium salt from a hot alkaline solution gives a 90 % recovery of the product as gray crystals. An improved process with 90 % yield is claimed by feeding the concentrated 2-aminonaphthalene-5,7-disulfonic acid liquor and the caustic liquor simultaneously into the fusion reactor to maintain more stable conditions.

Definition

ChEBI: 7-amino-4-hydroxy-2-naphthalenesulfonic acid is an aminonaphthalenesulfonic acid that is 2-naphthalenesulfonic acid substituted by an amino group at position 7 and a hydroxy group at position 4 respectively. It has a role as a metabolite. It is an aminonaphthalenesulfonic acid and a member of naphthols.

J acid Preparation Products And Raw materials

Raw materials

FUMING SULFURIC ACID 2-Aminonaphthalene-1-sulfonic acid 2-Naphthylamine NAPHTHENIC ACID Sodium hydroxide

Preparation Products

disodium 3-[[4'-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-1-sulphonate 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid Reactive Orange 5 7-(Acetylamino)-4-hydroxy-2-naphthalenesulfonic acid Reactive Orange 1

Direct Red 31 6-AMINO-1-NAPHTHOL ACID RED 137 REACTIVE ORANGE 84 2-Hydroxy-5-[[5-hydroxy-6-[(2-sodiooxycarbonylphenyl)azo]-7-sodiosulfo-2-naphthalenyl]azo]benzoic acid sodium salt

1,6-Naphthalenedisulfonic acid, 7-[[4'-[(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-8-hydroxy-, trisodium salt REACTIVE ORANGE 82 Benzoic acid, 2-[[1-amino-7-[[4-[[6-amino-5-[(3-carboxy-4-hydroxyphenyl)azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-2-methoxyphenyl]azo]-8-hydroxy-3,6-disulfo-2-naphthalenyl]azo]-5-[[6-amino-5-[(3-carboxy-4-hydroxyphenyl)azo]-1-hydroxy-3-sul disodium 7-(acetylamino)-3-[[4-[(4-chloro-2-sulphonatophenyl)azo]-2,5-dimethylphenyl]azo]-4-hydroxynaphthalene-2-sulphonate trisodium 5-amino-3-[[4'-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-2,7-disulphonate

tetrasodium 2-[[2-amino-6-[[4-[[4-[(3-carboxylato-4-hydroxyphenyl)azo]-7-sulphonato-1-naphthyl]azo]-2,5-dimethoxyphenyl]azo]-5-hydroxy-7-sulphonato-1-naphthyl]azo]-5-nitrobenzoate Direct Blue 278 Direct Blue 82 Reactive Red SCARLET 2G C.I. Direct Blue 166

Reactive orange 64

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J acid Suppliers

Global( 372)Suppliers

Supplier	Tel	Country	ProdList	Advantage	Inquiry
Jemby Chem Limited	+91-7929706475 +91-9825064400	Gujarat, India	6	58	Inquiry
Santel Industries	+91-7940075559 +91-7926401417	Gujarat, India	98	58	Inquiry
Royal Trading Corporation	07506059883	Mumbai, India	135	58	Inquiry
A.J Chemicals	91-9810153283	New Delhi, India	6100	58	Inquiry
Rohan Dyes and Intermediates Ltd. (RDIL)	91-79-26421129	Gujarat, India	8	58	Inquiry
H. Ramesh Kumar	91-22-23444365	Maharashtra, India	117	58	Inquiry
Asiatic Colour-Chem Ind. Ltd.	91-79-40015900	Gujarat, India	18	58	Inquiry
Om Impex	08048371895Ext 259	Maharashtra, India	35	58	Inquiry
Himalaya Chemicals	08048371862Ext 312	Gujarat, India	13	58	Inquiry
Emco Dyestuff Pvt. Ltd.	+91 (22) 894 35 21 / 894 49 06	New Delhi, India	189	54	Inquiry

Supplier	Advantage
Jemby Chem Limited	58
Santel Industries	58
Royal Trading Corporation	58
A.J Chemicals	58
Rohan Dyes and Intermediates Ltd. (RDIL)	58
H. Ramesh Kumar	58
Asiatic Colour-Chem Ind. Ltd.	58
Om Impex	58
Himalaya Chemicals	58
Emco Dyestuff Pvt. Ltd.	54

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7-amino-4-hydroxy-2-naphthalenesulfonicaci kyselina6-amino-1-naftol-3-sulfonova kyselinai 6-amino-1-naphthol-3-sulfonicacid(2-5-7) 2-AMINO-5-HYDROXYNAPHTHALENE-7-SULFONIC ACID 2-AMINO-5-NAPHTHOL-7-SULFONIC ACID 7-AMINO-4-HYDROXY-2-NAPHTHALENESULFONIC ACID 7-amino-4-hydroxy-2-naphthalene sulphonic acid 7-AMINO-4-HYDROXYNAPHTHALENE-2-SULFONIC ACID 6-AMINO-1-NAPHTHOL-3-SULFONIC ACID 6-AMINO-1-HYDROXY-3-SULFONAPHTHALENE AMINO-NAPHTHOL SULFONIC ACID AMINONAPHTHOL SULFONIC ACID J I-ACID J ACID 6-Amino-1-hydroxy-3-naphthalenesulfonic acid Iso-γ acid 2-Naphthalenesulfonic acid, 7-amino-4-hydroxy- 2-AMINO-5-NAPHTHOL-7-SULPHONICACID 7-AMINO-4-HYDROXYL-2-NAPHTHALENE-SULPHONICACID 7-Amino-4-hydroxy-2-naphthalinsulfonsure 7-amino-4-hydroxynaphthalene-2-sulphonic acid 7-Amino-4-hydroxynaphtalene-2-sulfonicacid 7-Amino-4-naphthol-2-sulfonicacid aminonaphthol isogammaacid 6-Amino-1-naphthol-3-sulfonic acid, I-Acid 1-Hydroxy-6-amino-3-naphthalenesulfonic acid 4-Hydroxy-7-amino-2-naphthalenesulfonic acid kyselina2-amino-5-naftol-7-sulfonova 7-azanyl-4-hydroxy-naphthalene-2-sulfonic acid 7-Amino-4-hydroxy-2-naphthalenesulfonic Acid J Acid 6-AMino-1-naphthol-3-sulfonic Acid 7-amino-4-hydroxy-2-naphthalenesul 6-Amino-1-naphthol-3-sulfonic Acid Hydrate> J acid ISO 9001：2015 REACH 87-02-5 J acid 6-Amino-1-naphthol-3-sulfonic Acid Hydrate J acid/3-Amino-8-Naphthol-6-Sulfonic acid 2-Amino-5-Naphthol-7-Sulfonic Acid2-Amino-5-Naphthol-7-Sulfonic Acid 87-02-5 1987-2-5 1987-02-05 1987-02-5 87-05-5 Sulfur Compounds Sulfonic/Sulfinic Acids Organic Building Blocks Building Blocks Building Blocks Chemical Synthesis Organic Building Blocks Sulfonic/Sulfinic Acids Sulfur Compounds Azo dyes Intermediates of Dyes and Pigments 87-02-5