1-Hydroxynaphthalene-8-sulfonic acid
- CAS No.
- 117-22-6
- Chemical Name:
- 1-Hydroxynaphthalene-8-sulfonic acid
- Synonyms
- 1-NAPHTHOL-8-SULFOMIC ACID;1 NAPTHOL-8-SULPHONIC ACID;1-NAPHTHOL-8-SULFONIC ACID;alpha-Naphthol-8-sulfonic acid;1-Hydroxynaphthalene-8-sulfonicaci;8-hydroxynaphthalenesulphonic acid;8hydroxynaphthalene-1-sulfonic acid;1-Hydroxynaphthalene-8-sulfonic acid;8-hydroxy-1-naphthalenesulfonic acid;1-Naphthalenesulfonic acid, 8-hydroxy-
- CBNumber:
- CB5405682
- Molecular Formula:
- C10H8O4S
- Molecular Weight:
- 224.23
- MOL File:
- 117-22-6.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/5/23 18:06:45
| Density | 1.549 |
|---|---|
| pka | 0.05±0.40(Predicted) |
| CAS DataBase Reference | 117-22-6(CAS DataBase Reference) |
| EPA Substance Registry System | 1-Naphthalenesulfonic acid, 8-hydroxy- (117-22-6) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P280-P301+P312-P302+P352-P305+P351+P338 |
1-Hydroxynaphthalene-8-sulfonic acid Chemical Properties,Uses,Production
Chemical Properties
1-Hydroxynaphthalene-8-sulfonic acid [117-22-6]. (8-hydroxynaphthalene-1-sulfonic acid), C10H8O4S, Mr 224.2, crystallizes as the monohydrate with mp 106℃. Sulfonation gives 1-hydroxynaphthalene-4,8-disulfonic acid, and alkali fusion with potassium hydroxide at 230℃ yields 1,8-dihydroxynaphthalene. Coupling with diazo compounds occurs in the 2- position.
Uses
The naphthosultone is usually satisfactory as an intermediate for further processing; however, for azo dye preparation the free naphthol must be used, for example, in C.I. Acid Black 54 and C.I. Acid Blue 158.
Production Methods
1-Aminonaphthalene-8-sulfonic acid is diazotized over 16 h at 50℃ and then heated to 80 ℃. After cooling, the precipitated naphthosultone is filtered off and washed. The sultone is heated with dilute sodium hydroxide at 100℃, which causes ring opening; the product is isolated after salting out.
1-Hydroxynaphthalene-8-sulfonic acid Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6124 | 58 | Inquiry |
| Hebei Mojin Biotechnology Co.,Ltd | +86-15028179902 | China | 1021 | 58 | Inquiry |
| Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 | China | 29798 | 60 | Inquiry |
| Xiamen AmoyChem Co., Ltd | +86-592-6051114 +8618959220845 | China | 6387 | 58 | Inquiry |
| SIMAGCHEM CORP | +86-13806087780 | China | 17367 | 58 | Inquiry |
| Dayang Chem (Hangzhou) Co.,Ltd. | 571-88938639 +8617705817739 | China | 52861 | 58 | Inquiry |
| PT CHEM GROUP LIMITED | China | 35426 | 58 | Inquiry | |
| GIHI CHEMICALS CO.,LIMITED | +8618058761490 | China | 50000 | 58 | Inquiry |
| Mainchem Co., Ltd. | +86-86-05926210733 +8618030271905 | China | 6572 | 58 | Inquiry |
| Amadis Chemical Company Limited | 571-89925085 | China | 131980 | 58 | Inquiry |
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