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
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) | GHS08 |
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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 | |||||||||
F | 21 | |||||||||
HazardClass | 8 | |||||||||
PackingGroup | III | |||||||||
HS Code | 2922190090 | |||||||||
Toxicity | LD50 oral in rat: 11500mg/kg | |||||||||
NFPA 704 |
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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 |
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
J acid Preparation Products And Raw materials
Raw materials
Preparation Products
1of5
Supplier | Tel | Country | ProdList | Advantage | |
---|---|---|---|---|---|
Hebei Weibang Biotechnology Co., Ltd | +8615531157085 | abby@weibangbio.com | China | 8810 | 58 |
Hebei Mojin Biotechnology Co., Ltd | +86 13288715578 +8613288715578 | sales@hbmojin.com | China | 12839 | 58 |
Hebei Chuanghai Biotechnology Co,.LTD | +86-13131129325 | sales1@chuanghaibio.com | China | 5892 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21634 | 55 |
Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +8618949832763 | info@tnjchem.com | China | 2986 | 55 |
career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29881 | 58 |
Shenzhen Nexconn Pharmatechs Ltd | +86-755-89396905 +86-15013857715 | admin@nexconn.com | China | 10310 | 58 |
Hubei Jusheng Technology Co.,Ltd. | 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 | |
---|---|---|---|---|---|---|---|---|
2024-11-29 | J acid
87-02-5
|
US $1.00 / KG | 1KG | 97% | 1000KG/month | WUHAN FORTUNA CHEMICAL CO., LTD | ||
2024-11-18 | J acid
87-02-5
|
US $10.00 / KG | 1KG | 99% | 10 mt | Hebei Weibang Biotechnology Co., Ltd | ||
2024-10-11 | J acid
87-02-5
|
US $11.60 / KG | 1KG | 99% | 5000kg | Hebei Chuanghai Biotechnology Co,.LTD |