Preparation of red amorphous selenium
US3954951A · kind A · utility
10Cited by
0References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1974 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Aug 6, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Red amorphous selenium is obtained by precipitating selenium from a solution of selenious acid in methanol or ethanol with hydrazine or a soluble salt thereof at a temperature between about -20.degree.C. and the freezing point of the solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.