Sodium p-toluenesulfinate
- CAS No.
- 824-79-3
- Chemical Name:
- Sodium p-toluenesulfinate
- Synonyms
- SPTS;P-TOLUENESULFINIC ACID SODIUM SALT;Sodium Para Toluene Sulfinate;TOLUENE-4-SULFINIC ACID SODIUM SALT;p-toluensulfinansodny;SODIUM P-TOLUENESULPHINATE;P-Toluenesulfinate Sodium Salt;Nsc4871;SodiuM toluene (SPTS);The toluene sulfonate
- CBNumber:
- CB8195779
- Molecular Formula:
- C7H7NaO2S
- Molecular Weight:
- 178.18
- MDL Number:
- MFCD00013136
- MOL File:
- 824-79-3.mol
- MSDS File:
- SDS
| Melting point | >300 °C(lit.) |
|---|---|
| Density | 1.399-1.405 at 20℃ |
| vapor pressure | 0-0.001Pa at 20-50℃ |
| storage temp. | Inert atmosphere,Store in freezer, under -20°C |
| form | Powder |
| color | White to off-white |
| Water Solubility | Slightly soluble in water. |
| Sensitive | Hygroscopic |
| Merck | 14,9532 |
| BRN | 4621454 |
| InChI | InChI=1S/C7H8O2S.Na/c1-6-2-4-7(5-3-6)10(8)9;/h2-5H,1H3,(H,8,9);/q;+1/p-1 |
| InChIKey | KFZUDNZQQCWGKF-UHFFFAOYSA-M |
| SMILES | C1(=CC=C(C)C=C1)S([O-])=O.[Na+] |
| LogP | -0.9 at 23℃ and pH4 |
| Surface tension | 62.9mN/m at 1.004g/L and 20℃ |
| CAS DataBase Reference | 824-79-3(CAS DataBase Reference) |
| FDA UNII | 7CKU5W4TRM |
| EPA Substance Registry System | Benzenesulfinic acid, 4-methyl-, sodium salt (824-79-3) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P280-P261-P271 | |||||||||
| PPE | Eyeshields, Gloves, type N95 (US) | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 22-24/25-37/39-26 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | XT4725000 | |||||||||
| F | 3 | |||||||||
| Hazard Note | Irritant | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 2930 90 98 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Sodium p-toluenesulfinate price More Price(63)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 455652 | Sodium p-toluenesulfinate 95% | 824-79-3 | 25g | $60.2 | 2026-04-30 | Buy |
| Sigma-Aldrich | 455652 | Sodium p-toluenesulfinate 95% | 824-79-3 | 100g | $123 | 2026-04-30 | Buy |
| Sigma-Aldrich | 8.43677 | Sodiumtoluene-4-sulfinate ≥95% (HPLC) | 824-79-3 | 25g | $51.6 | 2022-05-15 | Buy |
| Sigma-Aldrich | 8.43677 | Sodiumtoluene-4-sulfinate ≥95% (HPLC) | 824-79-3 | 100g | $154 | 2022-05-15 | Buy |
| TCI Chemical | T0275 | Sodium p-Toluenesulfinate >98.0%(HPLC)(T) | 824-79-3 | 25g | $26 | 2026-04-30 | Buy |
Sodium p-toluenesulfinate Chemical Properties, Uses, Production
Description
Sodium p-toluenesulfinate (STS, molecular formula C7H7NaO2S) is an organic synthesis intermediate with strong nucleophilicity and reducing properties, and is mainly used as a reaction reagent/building block. In a copper-catalyzed system, it can undergo a coupling reaction with aryl diazonium salts to synthesize diaryl sulfones. Its reaction with benzoyl chloride produces benzoic anhydride in good yield. In addition, it can also react with acetyl chloride to produce acetic anhydride, p-toluenesulfinyl chloride, thiosulfonate, and sodium p-toluenesulfonate [1-2]. Furthermore, multiple studies have shown that STS is effective as an antioxidant for dental adhesives. It can enhance the bonding durability of general adhesives on acid-etched dentin [3]. It should be noted that sodium p-toluenesulfinate is easily confused with sodium p-toluenesulfonate. Sodium p-toluenesulfonate (molecular formula C7H9NaO3S) is mainly used as an industrial detergent, water-soluble growth promoter, or dye intermediate.
Chemical Properties
White powder
Uses
Sodium p-toluenesulfinate can be used as intermediate of pharmaceutical and dispersal dyes, and also can be used as curing agent of grouting material.
Uses
p-Toluenesulfinic acid sodium salt is used as an intermediate for the preparation of pharmaceuticals and dispersal dyes. It acts as a curing agent of grouting material. It is also used as a discharge medium of dyes and pigments. Further, it serves as a chemical intermediate in the production of fluorescent pigments and fabric adhesive. In addition to this, it is used as an electroplating brightening agent and curing agent.
Purification Methods
Recrystallise the salt from water (to constant UV spectrum) and dry it under vacuum, or extract it with hot *benzene, then dissolve it in EtOH/H2O and heat with decolorising charcoal. The solution is filtered and cooled to give crystals of the dihydrate.[Beilstein 11 I 718.]
References
[1] Gund, S. H., Shelkar, R. S., & Nagarkar, J. M. (2015). Copper catalyzed synthesis of unsymmetrical diaryl sulfones from an arenediazonium salt and sodium p-toluenesulfinate†. RSC Advances, 77, 62926–62930. https://doi.org/10.1039/C5RA10291J
[2] KobayashiMichio. (1966). Organic Sulfur Compounds. III. The Reactions of Toluenesulfinic Acid with Acyl Chlorides. Bulletin of the Chemical Society of Japan, 39 1, 967–970. https://doi.org/10.1246/bcsj.39.967
[3] Yorichika Shioya. (2021). Sodium p-Toluenesulfinate Enhances the Bonding Durability of Universal Adhesives on Deproteinized Eroded Dentin. Polymers. https://doi.org/10.3390/polym13223901
Sodium p-toluenesulfinate Preparation Products And Raw materials
Raw materials
Preparation Products
1of3
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shouguang Nuomeng Chemical Co Ltd. | 0536-5399456 13869682027 | holly@nuomengchem.com | China | 47 | 58 |
| Tangshan Moneide Trading Co., Ltd. | 0315-8309571 15633399667 | sales@moneidechem.com | China | 703 | 57 |
| Shandong Vantage Specialty Chemicals Biotechnology Co., Ltd. | 13396369453 18678026865 | sdfantai@163.com | China | 904 | 58 |
| Wuhan Ji Ye Sheng Chemical Co., Ltd. | 15387013945 | 1806989108@qq.com | China | 2163 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Beijing dtftchem Technology Co., Ltd. | 010-60275820 13031183356 | elainezt@sina.com | China | 1386 | 62 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
View Latest Price from Sodium p-toluenesulfinate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-17 | Sodium toluene-4-sulphinate
824-79-3
|
1KG | 99% | 2000kg/year | Jinan Finer Chemical Co., Ltd | ||
 |
2026-09-02 | Sodium p-toluenesulfinate
824-79-3
|
$1.00-100.00 | 1KG | 99% | Henan Fengda Chemical Co., Ltd | ||
 |
2026-08-25 | Sodium p-toluenesulfinate, SPTS, P-Toluene sulfinic acid sodium salt
824-79-3
|
$5400.00 | 1KG | 98% Min. | 200 tons per month | Shouguang Nuomeng Chemical Co Ltd. |
-
- Sodium toluene-4-sulphinate
824-79-3
- $0.00
- 99%
- Jinan Finer Chemical Co., Ltd
-
- Sodium p-toluenesulfinate
824-79-3
- $1.00-100.00
- 99%
- Henan Fengda Chemical Co., Ltd
-
- Sodium p-toluenesulfinate, SPTS, P-Toluene sulfinic acid sodium salt
824-79-3
- $5400.00
- 98% Min.
- Shouguang Nuomeng Chemical Co Ltd.
