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J acid

Product Name
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
Formula Weight
239.25
MOL File
87-02-5.mol
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J acid Property

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)
EPA Substance Registry System
7-Amino-4-hydroxy-2-naphthalenesulfonic acid (87-02-5)
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Safety

Hazard Codes 
C
Risk Statements 
34
Safety Statements 
26-27-36/37/39
RIDADR 
UN 2585 8/PG 3
WGK Germany 
1
RTECS 
QK1295500
F 
21
HazardClass 
8
PackingGroup 
III
HS Code 
2922190090
Toxicity
LD50 oral in rat: 11500mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H320Causes eye irritation

H341Suspected of causing genetic defects

Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P308+P313IF exposed or concerned: Get medical advice/attention.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

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

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
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J acid Suppliers

Americas 1 Belgium 1 China 241 Czech Republic 1 Europe 3 Germany 6 India 68 Japan 7 Malaysia 1 South Korea 3 Switzerland 1 The Netherlands 1 United Kingdom 11 United States 29 Global 374
TCI Chemicals (India) Pvt. Ltd.
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View Lastest Price from J acid manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD
Product
J acid 87-02-5
Price
US $1.00/KG
Min. Order
1KG
Purity
97%
Supply Ability
1000KG/month
Release date
2021-06-16
Hebei Weibang Biotechnology Co., Ltd
Product
J acid 87-02-5
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10 mt
Release date
2024-11-18
Hebei Chuanghai Biotechnology Co,.LTD
Product
J acid 87-02-5
Price
US $11.60/KG
Min. Order
1KG
Purity
99%
Supply Ability
5000kg
Release date
2024-08-21

87-02-5, J acidRelated Search:

5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid CHLOROPHOSPHONAZO III Glycine Folic acid 4-Amino-benzenesulfonic acid monosodium salt Sulfamic acid monosodium salt Ammonium sulfamate Citric acid Ethyl 2-(Chlorosulfonyl)acetate Molasses 2-Naphthol ALTRENOGEST Nickel bis(sulphamidate) Sulfamic acid Naphthalene 1-Naphthol Stearic acid 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid

  • 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 Hydrate
  • 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&nbsp
  • 7-amino-4-hydroxy-2-naphthalenesul
  • 6-Amino-1-naphthol-3-sulfonic Acid Hydrate&gt
  • J acid ISO 9001：2015 REACH
  • 87-02-5 J acid
  • 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
  • 87-05-5
  • 1987-2-5
  • 1987-02-05
  • 1987-02-5
  • 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