Stabilized ammonium polysulfide solutions and process utilizing same
US5376749A · kind A · utility
8Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1993 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Oct 5, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S588/901
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A stabilized ammonium polysulfide solution comprising an aqueous solution of ammonium polysulfide and a stabilizing amount of a water soluble, stabilizing compound that can be an azacyclic compound, a compound having the formula R--O--(C.sub.n H.sub.2n)NH.sub.2 or a compound having the formula (CH.sub.3).sub.2 NR.sub.1, the pH of the composition being from 7 to 14, the stabilized composition being useful in controlling the cyanide concentration in aqueous streams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.