Sodium p-toluenesulfinate , 98%, no water , 824-79-3
Synonym(s):
p-Toluenesulfinic acid sodium salt;Sodiumtoluene-4-sulfinate
CAS NO.：824-79-3
Empirical Formula: C7H7NaO2S
Molecular Weight: 178.18
MDL number: MFCD00013136
EINECS: 212-538-5
| Pack Size | Price | Stock | Quantity |
| 25G | RMB23.20 | In Stock |
|
| 100G | RMB41.60 | In Stock |
|
| 250G | RMB95.20 | In Stock |
|
| 500G | RMB180.80 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| 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) |
| EPA Substance Registry System | Benzenesulfinic acid, 4-methyl-, sodium salt (824-79-3) |
Description and Uses
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.
Sodium p-toluenesulfinate can be used as intermediate of pharmaceutical and dispersal dyes, and also can be used as curing agent of grouting material.
Safety
| 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 |
