Method for purifying pentachloronitrobenzene by solid base treatment
US5104491A · kind A · utility
0Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1991 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Mar 12, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/23
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Crude pentachloronitrobenzene containing hexachlorobenzene and small amounts of acids is treated in the molten state or in a mixture solution of nitrobenzene or chloronitrobenzenes with an inorganic basic substance and then subjected to a distillation under reduced pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.