Process and test kit for cocaine detection
US6133040A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Aug 28, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/145555
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Test kit and method for discriminating cocaine and its salts from substances that falsely give a positive color reaction with Scott's thiocyanate reagent. As all Scott false positive substances have lower pKa values than cocaine, or in their basic from higher pKa values than the cocaine base, they can be discriminated from cocaine by a suitable pH test of the solution. The pH indicator is preferably organic or lipophilic so that it can be dissolved in a solvent immiscible with water. The partitioning of the organic cocaine base or its salt between an organic and water phase of specific pH is used to further distinguish the test substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.