Organic reagent for the colorimetric detection of chlorine and ozone in drinking water
US5155048A · kind A · utility
7Cited by
1References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Mar 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/206664
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Para-substituted phenylene ring compounds where the substituent moieties are selected from the group consisting of aminoalkyl rings and alkyl rings, such as 1,1'-para-phenylene dipiperidine and 1,1'-para-phenylene dipyrolidine, can be used as colorimetric reagents for detecting the presence of small quantities of chlorine or ozone in water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.