Composition useful for detecting H.sub.2 S
US4279773A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1979 |
| Grant date | Jul 21, 1981 |
| Priority date | — |
| Expiry date | Aug 15, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/184
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An indicator device useful for detecting H.sub.2 S is disclosed. This detector utilizes a polymer having a permeation constant of at least 5.times.10.sup.-9 cm.sup.3 H.sub.2 S.multidot.cm thickness/(cm.sup.2 area.multidot.sec.multidot.cm Hg) with an incorporated lead containing compound at concentration levels of at least 10 weight percent. These compositions are useful for detecting hydrogen sulfide in concentrations as low as approximately 10 parts per billion by volume, or concentrations of approximately 1 part per million in relatively short periods, e.g., five minutes, and are utilizable for quantitative measurements of H.sub.2 S concentration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.