disodium disulphide
- CAS No.
- 22868-13-9
- Chemical Name:
- disodium disulphide
- Synonyms
- Na2S2;Sodium disulfide;Einecs 245-272-3;Disodio persulfide;disodium disulphide;Sodium sulfide (na2(S2));Sodium disulfide, anhydrous
- CBNumber:
- CB2918534
- Molecular Formula:
- Na2S2
- Molecular Weight:
- 110.11
- MDL Number:
- MFCD00272636
- MOL File:
- 22868-13-9.mol
| Melting point | 495 °C |
|---|---|
| Density | 2.01 g cm-3 |
| solubility | readily sol water; sol ethanol. |
| FDA UNII | B20OMA37AH |
| EPA Substance Registry System | Sodium sulfide (Na2(S2)) (22868-13-9) |
disodium disulphide Chemical Properties,Uses,Production
Chemical Properties
Disodium disulphide is a light yellow, microcrystalline, very hygroscopic powder; gradually darkens on heating. N2S2.6H2O, cream colored needles.
Uses
Disodium disulphide is used as a nucleophilic agent for synthesis of organic disulfides and selective reducing reagent for the nitro group.[1-3]
Preparation
Disodium disulphide (Na2S2) preparations are cumbersome and sometimes afford mixtures containing the polysulfides Na2S4 and Na2S5. They involve reduction of Sulfur with Sodium in liquid ammonia, heating Na with S in a vacuum at 500 °C, or heating Na2S4 with Na in absolute ethanol under inert gas.[4-5] Na2S2 is formed in situ by heating the aqueous or alcoholic Sodium Sulfide solution with elemental sulfur.[6-9]
storage
Disodium disulphide can be stored for a limited period under anhydrous and oxygen-free conditions, but generally it is used directly as prepared as the aqueous or ethanolic solution.
References
1. (a) Sh?berl, A.; Wagner, A. MOC 1955, 9, 55; (b) Reid, E. E. Organic Chemistry of Bivalent Sulfur; Chemical Publishing Co: New
York, 1960; Vol. 3, p 362.
2. Field, L. In Organic Chemistry of Sulfur; Oae, S., Ed.; Plenum: New York, 1977; p 328.
3. Fieser, L.; Fieser M. FF 1967, 1, 1064.
4. Fehér, F. Handbook of Preparative Inorganic Chemistry; Brauer, G., Ed.; Academic: New York, 1963; Vol. 1, p 361.
5. Pearson, T. G.; Robinson, P. L. JCS 1930, 1473.
6. Allen, C. F. H.; MacKay, D. D. OSC 1943, 2, 580.
7. Boyer, J. H.; Buriks, R. S. OS 1960, 40, 96.
8. Campaigne, E.; Budde W. M.; Schaefer, G. F. OSC 1963, 4, 31.
9. Hase, T. A.; Per?kyl?, H. SC 1982, 12, 947.
disodium disulphide Preparation Products And Raw materials
Raw materials
Preparation Products
disodium disulphide Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21626 | 55 |
| Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 | 1026@dideu.com | China | 8808 | 58 |
| GIHI CHEMICALS CO.,LIMITED | +8618058761490 | info@gihichemicals.com | China | 49980 | 58 |
| JinJin Le Chemical Co., Ltd | 10106090 | jjlchem2@163.com | China | 9981 | 58 |
| DOJINDO Laboratories | 021-64272302 | info@dojindo.cn | China | 385 | 58 |
| Supplier | Advantage |
|---|---|
| Henan Tianfu Chemical Co.,Ltd. | 55 |
| Shaanxi Didu New Materials Co. Ltd | 58 |
| GIHI CHEMICALS CO.,LIMITED | 58 |
| JinJin Le Chemical Co., Ltd | 58 |
| DOJINDO Laboratories | 58 |