1-Aminonaphthalene-6-sulfonic acid
- CAS No.
- 119-79-9
- Chemical Name:
- 1-Aminonaphthalene-6-sulfonic acid
- Synonyms
- 5-AMINONAPHTHALENE-2-SULFONIC ACID;1,6-CLEVES ACID;NSC 4984;NSC 31506;kyselinacleve;CLEVE'S ACIDS;Mix Clevs Acid;1.6 Clevs Acid;Kyselina cleve;1,6-CLEVE'S ACID
- CBNumber:
- CB6228406
- Molecular Formula:
- C10H9NO3S
- Molecular Weight:
- 223.25
- MOL File:
- 119-79-9.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/12/18 14:15:30
| Melting point | >300°C |
|---|---|
| Density | 1.3588 (rough estimate) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.6500 (estimate) |
| storage temp. | Refrigerator |
| solubility | soluble100mg/mL, clear, brown (1N NH4OH) |
| form | Solid |
| pka | pK1: 3.80 (25°C) |
| color | Purple |
| Water Solubility | 1g/L(16 ºC) |
| Merck | 14,2350 |
| BRN | 1819887 |
| Dissociation constant | 0 at 39℃ |
| CAS DataBase Reference | 119-79-9(CAS DataBase Reference) |
| NIST Chemistry Reference | 1-Naphthylamine-6-sulfonic acid(119-79-9) |
| EPA Substance Registry System | 2-Naphthalenesulfonic acid, 5-amino- (119-79-9) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319 | |||||||||
| Precautionary statements | P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313 | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-36/37/39-24/25 | |||||||||
| RIDADR | 1759 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | QK1285000 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 8 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29309090 | |||||||||
| NFPA 704 |
|
1-Aminonaphthalene-6-sulfonic acid price More Price(8)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 285072 | 5-Amino-2-naphthalenesulfonic acid ≥95% | 119-79-9 | 5G | ₹2035.1 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 285072 | 5-Amino-2-naphthalenesulfonic acid ≥95% | 119-79-9 | 100G | ₹7988.85 | 2022-06-14 | Buy |
| TCI Chemicals (India) | A0346 | 5-Amino-2-naphthalenesulfonic Acid | 119-79-9 | 25G | ₹2400 | 2022-05-26 | Buy |
| ALFA India | ALF-L03099-14 | 5-Aminonaphthalene-2-sulfonic acid, 97% | 119-79-9 | 25g | ₹2105 | 2022-05-26 | Buy |
| TCI Chemicals (India) | A0346 | 5-Amino-2-naphthalenesulfonic Acid | 119-79-9 | 500G | ₹6900 | 2022-05-26 | Buy |
1-Aminonaphthalene-6-sulfonic acid Chemical Properties,Uses,Production
Chemical Properties
Purple Solid. 1-Aminonaphthalene-6-sulfonic acid [119- 79-9]. (5-aminonaphthalene-2-sulfonic acid), 1,6-Cleve’s acid, C10H9NO3S, Mr 223.24, crystallizes from boiling water as plates of the dihydrate. Its sodium, potassium, and calcium salts are all readily soluble in water, but the barium salt is only sparingly soluble. Sulfonation with 10 % oleum yields 1-aminonaphthalene-4,6-disulfonic acid. Caustic fusion gives 5- amino-2-hydroxynaphthalene, and Bucherertype hydrolysis gives 1-hydroxynaphthalene-6- sulfonic acid.
Uses
Intermediate of dyestuff
Production Methods
Sulfonation of 1-naphthylamine with concentrated sulfuric acid at 130℃ gives mainly 1-aminonaphthalene-6-sulfonic acid. However, the latter is always made, together with the 1,7-isomer, by nitration of naphthalene-2-sulfonic acid to give the mixed 5- and 8- nitronaphthalene-2-sulfonic acids follwed by reduction to ‘‘mixed Cleve’s acids.’’ A b-sulfonation mass is diluted with sulfuric acid, then 67.5 % nitric acid is added slowly at 34℃. After being quenched and neutralized with calcium carbonate, the filtered liquor is reduced by boiling with iron powder, slight acidity being maintained with sulfuric acid. After basification with magnesia the iron residues are filtered off and the filtrate is evaporated until the magnesium salt of the product crystallizes on cooling. Filtration followed by washing with magnesium sulfate gives a 34 % yield of the magnesium salt of 1,6-Cleve’s acid. Purification by dissolution in hot water, acidification, and filtration of the free acid while hot reduce the yield to 25 % based on naphthalene.
General Description
The crystal structure of 5-amino-2-naphthalenesulfonic acid (1,6-Cleve′s acid) depicted the presence of a sulfonate-aminium group zwitterion.
1-Aminonaphthalene-6-sulfonic acid Preparation Products And Raw materials
Raw materials
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chevron_right| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Santel Industries | +91-7940075559 +91-7926401417 | Gujarat, India | 98 | 58 | Inquiry |
| Santel Industries | 91-79-26401417 | Gujarat, India | 52 | 58 | Inquiry |
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| A.J Chemicals | 91-9810153283 | New Delhi, India | 6100 | 58 | Inquiry |
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| Triveni chemicals | 08048762458 | New Delhi, India | 6088 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| Santel Industries | 58 |
| Santel Industries | 58 |
| Shree Pushkar Chemicals & Fertilisers Ltd. | 58 |
| Colour Finders | 58 |
| Ambuja Intermediates Ltd. | 58 |
| Lion ColorChem | 58 |
| CHEMSWORTH | 30 |
| A.J Chemicals | 58 |
| Alfa Aesar | 58 |
| Triveni chemicals | 58 |
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