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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
MDL Number:
MFCD00003970
MOL File:
87-02-5.mol
MSDS File:
SDS
Last updated:2024-11-18 17:01:59

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
pka -0.28±0.40(Predicted)
form powder
color yellow
Water Solubility 5g/L at 20℃
InChIKey KYARBIJYVGJZLB-UHFFFAOYSA-N
LogP -1.39
CAS DataBase Reference 87-02-5(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII 9A1IU1C93L
EPA Substance Registry System 7-Amino-4-hydroxy-2-naphthalenesulfonic acid (87-02-5)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
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  C
Risk Statements  34
Safety Statements  26-27-36/37/39
RIDADR  UN 2585 8/PG 3
WGK Germany  1
RTECS  QK1295500
21
HazardClass  8
PackingGroup  III
HS Code  2922190090
Toxicity LD50 oral in rat: 11500mg/kg
NFPA 704
0
3 0

J acid price More Price(14)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 08800 7-Amino-4-hydroxy-2-naphthalenesulfonic acid technical, ≥90% (T) 87-02-5 100G $102.6 2024-03-01 Buy
TCI Chemical A0370 6-Amino-1-naphthol-3-sulfonic Acid Hydrate >95.0%(HPLC)(T) 87-02-5 25g $30 2024-03-01 Buy
TCI Chemical A0370 6-Amino-1-naphthol-3-sulfonic Acid Hydrate >95.0%(HPLC)(T) 87-02-5 500g $231 2024-03-01 Buy
Usbiological 415295 2-Amino-5-naphthol-7-sulfonic Acid 87-02-5 5g $305 2021-12-16 Buy
TRC A618693 2-Amino-5-naphthol-7-sulfonicAcid 87-02-5 25g $70 2021-12-16 Buy
Product number Packaging Price Buy
08800 100G $102.6 Buy
A0370 25g $30 Buy
A0370 500g $231 Buy
415295 5g $305 Buy
A618693 25g $70 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.

Flammability and Explosibility

Not classified

118-33-2
87-02-5
Synthesis of J acid from 2-Naphthylamine-5,7-disulfonic acid

J acid Preparation Products And Raw materials

Raw materials

Preparation Products

1of5

Global( 374)Suppliers
Supplier Tel Email Country ProdList Advantage
Hebei Weibang Biotechnology Co., Ltd
+8615531157085 abby@weibangbio.com China 8810 58
Hebei Mojin Biotechnology Co., Ltd
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Hebei Chuanghai Biotechnology Co,.LTD
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18871490254 linda@hubeijusheng.com CHINA 28172 58
Xiamen AmoyChem Co., Ltd
+86-86-5926051114 +8618959220845 sales@amoychem.com China 6383 58
Hubei xin bonus chemical co. LTD
86-13657291602 linda@hubeijusheng.com CHINA 22963 58

View Lastest Price from J acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
J acid pictures 2024-11-29 J acid
87-02-5
US $1.00 / KG 1KG 97% 1000KG/month WUHAN FORTUNA CHEMICAL CO., LTD
J acid pictures 2024-11-18 J acid
87-02-5
US $10.00 / KG 1KG 99% 10 mt Hebei Weibang Biotechnology Co., Ltd
 J acid pictures 2024-10-11 J acid
87-02-5
US $11.60 / KG 1KG 99% 5000kg Hebei Chuanghai Biotechnology Co,.LTD
  • J acid pictures
  • J acid
    87-02-5
  • US $1.00 / KG
  • 97%
  • WUHAN FORTUNA CHEMICAL CO., LTD
  • J acid pictures
  • J acid
    87-02-5
  • US $10.00 / KG
  • 99%
  • Hebei Weibang Biotechnology Co., Ltd
  •  J acid pictures
  • J acid
    87-02-5
  • US $11.60 / KG
  • 99%
  • Hebei Chuanghai Biotechnology Co,.LTD
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