Method for removing tetranitromethane from nitric acid
US5589037A · kind A · utility
3Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1995 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Oct 24, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S159/19
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Tetranitromethane and other polynitrated methanes can be effectively removed from otherwise substantially organic-free nitric acid streams through the addition of substantially organic-free concentrated sulfuric acid and by, optionally, performing secondary operations such as sparging the mixed acid stream with a gas such as nitric oxide or with an oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.