4-hydroxynaphthalene-2-sulphonic acid
- CAS No.
- 3771-14-0
- Chemical Name:
- 4-hydroxynaphthalene-2-sulphonic acid
- Synonyms
- 4-Hydroxy-2-naphthalenesulfonic acid;4-hydroxynaphthalene-2-sulfonic acid;4-hydroxynaphthalene-2-sulphonic acid;2-Naphthalenesulfonic acid, 4-hydroxy-
- CBNumber:
- CB9936414
- Molecular Formula:
- C10H8O4S
- Molecular Weight:
- 224.23
- MDL Number:
- MFCD00021505
- MOL File:
- 3771-14-0.mol
- MSDS File:
- SDS
| Density | 1.549±0.06 g/cm3(Predicted) |
|---|---|
| storage temp. | 2-8°C, stored under nitrogen, away from moisture |
| pka | 0.15±0.40(Predicted) |
| Appearance | White to off-white Solid |
| EPA Substance Registry System | 2-Naphthalenesulfonic acid, 4-hydroxy- (3771-14-0) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS05,GHS07 |
|---|---|
| Signal word | Danger |
| Hazard statements | H302-H315-H314 |
| Precautionary statements | P260-P264-P270-P280-P301+P330+P331-P302+P352-P303+P361+P353-P304+P340-P305+P351+P338-P310-P332+P313-P362-P405-P501 |
| TSCA | TSCA listed |
4-hydroxynaphthalene-2-sulphonic acid price
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Activate Scientific | AS173996 | 4-hydroxynaphthalene-2-sulfonic acid 97% | 3771-14-0 | 1g | $90 | 2026-06-04 | Buy |
| Activate Scientific | AS173996 | 4-hydroxynaphthalene-2-sulfonic acid 97% | 3771-14-0 | 5g | $243 | 2026-06-04 | Buy |
| Activate Scientific | AS173996 | 4-hydroxynaphthalene-2-sulfonic acid 97% | 3771-14-0 | 25g | $1037 | 2026-06-04 | Buy |
| aablocks | AA00CHXM | 4-Hydroxynaphthalene-2-Sulfonic Acid 97% | 3771-14-0 | 250mg | $39 | 2026-05-28 | Buy |
| aablocks | AA00CHXM | 4-Hydroxynaphthalene-2-Sulfonic Acid 97% | 3771-14-0 | 1g | $101 | 2026-05-28 | Buy |
4-hydroxynaphthalene-2-sulphonic acid Chemical Properties, Uses, Production
Chemical Properties
1-Hydroxynaphthalene-3-sulfonic acid [3771-14-0]. (4-hydroxynaphthalene-2- sulfonic acid), C10H8O4S, Mr 224.2, and its salts are very soluble in water. Coupling with diazo compounds occurs in the 2-position with weak diazo compounds, but in the 4-position with strong diazo compounds such as diazotized nitroanilines. Heating with ammonia at 170℃ gives 1,3-naphthalenediamine.
Uses
1-Hydroxynaphthalene-3-sulfonic acid is used as a coupling component for the production of direct dyes.
Preparation
1-Aminonaphthalene-3-sulfonic acid is heated with dilute sulfuric acid by using high-pressure steam to maintain a pressure of 1 MPa for 20 h. After cooling, screening, and adding salt to the hot liquor, the sodium salt crystallizes on cooling and is isolated in 80 % yield.
4-hydroxynaphthalene-2-sulphonic acid Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Carbott PharmTech Inc. | 0535-6385396 | info@carbottpharm.com | China | 996 | 56 |
| Beijing Ouhe Technology Co., Ltd | 13552068683 13522913783 | 2355560935@qq.com | China | 11777 | 60 |
| Alfa Chemistry | +1-5166625404; | Info@alfa-chemistry.com | United States | 20000 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | +86-029-81138252 +86-173 9270 1263 | 1057@dideu.com | China | 3960 | 58 |
| Shanghai Haohong Pharmaceutical Co., Ltd. | 400-8210725 4008210725 | malulu@leyan.com | China | 54996 | 58 |
| Shaoyuan Technology (Shanghai) Co., Ltd. | 021-50795510 4000665055 | marketing@accelachem.com | China | 9831 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | 81148925 17391631969 | 1023@dideu.com | China | 9999 | 58 |
| HANGZHOU LEAP CHEM CO., LTD. | +86-571-87711850 +86-15355479329 | market18@leapchem.com | China | 43303 | 58 |
View Latest Price from 4-hydroxynaphthalene-2-sulphonic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2024-07-14 | 4-hydroxynaphthalene-2-sulphonic acid
3771-14-0
|
$1.00 | 1KG | 99% | 20t | Shaanxi Dideu Medichem Co. Ltd |
-
- 4-hydroxynaphthalene-2-sulphonic acid
3771-14-0
- $1.00
- 99%
- Shaanxi Dideu Medichem Co. Ltd
