1,2,3,4,5-Pentathiapentane
- CAS No.
- Chemical Name:
- 1,2,3,4,5-Pentathiapentane
- Synonyms
- Pentasulfane;Hydrogen pentasulfide;Dihydrogen pentasulfide;1,2,3,4,5-Pentathiapentane
- CBNumber:
- CB02301640
- Molecular Formula:
- H2S5
- Molecular Weight:
- 162.34088
- MDL Number:
- MOL File:
- Mol file
1,2,3,4,5-Pentathiapentane Chemical Properties,Uses,Production
Chemical Properties
PentaSulfane is a greenish-yellow liquids. At 0°C, the substances are stable for several days if they are protected from contact with air.
Preparation
The reaction flask containing 100 g. H2S2 is cooled with Dry Ice-methanol to -60 to -65℃ in a Dewar flask. From the separatory funnel, 10 g of SCl2 (about 0.1 mole) is allowed to drip in slowly (with stirring) in such a way that the temperature of the mixture does not rise above -55℃. In contrast to the preparation of tetrasulfane, the use of a bent outlet capillary is not recommended, since it plugs easily. The Dewar flask is removed 15 minutes after the completion of the dropwise addition. When the mixture has warmed to 0℃, the temperature is held constant until the evolution of HCl has, for all practical purposes, ended; the mixture is then stirred for another 0.5 hour at room temperature. The total reaction time is 1.5 hours.
