Purification of hydroxylamine
US5788946A · kind A · utility
6Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Jul 16, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B21/1481
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides a method for purification of hydroxylamine so as to have a substantial reduction of cations and anions. The method involves passing a solution of hydroxylamine through at least one strong acid ion exchange bed which has been pretreated with dilute hydrochloric acid and then through at least one strong base anion exchange resin bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.