Abstract
The reaction of ozone with five-, six-, and seven-carbon olefins is quite rapid even in the gas phase at concentrations of a few parts per million. These reaction mixtures produce a toxic material which causes damage symptoms on pinto bean plants which are indistinguishable from those attributed to oxidant-type air pollution. Ozonides, formed in small yield by this reaction, are stable materials which do not damage pinto beans in any way even at concentrations higher than those arising in ozone-olefine reaction mixtures or in outdoor air. Evidence was obtained that the toxic material is unstable even at low concentrations in air. Its half life appears to be no more than a few minutes. This result suggests that either a transitory ozone-olefin complex or an unstable zwitter ion formed by its decomposition is the actual toxic substance. Attempts to confirm this by adding excess aldehyde or sulfur dioxide to scavenge the toxicant were not successful.
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Claims 4
Claim · model-written summary
Ozone-olefin reaction mixtures caused oxidant-like damage symptoms on pinto bean plants.
- Taxon
- pinto bean plantse0
- Treatment
- These reaction mixturese0
- Outcome
- damage symptomse0
- Comparator
- oxidant-type air pollutione0
Not reportedDirection
Verbatim
e0“These reaction mixtures produce a toxic material which causes damage symptoms on pinto bean plants which are indistinguishable from those attributed to oxidant-type air pollution.”
Claim · model-written summary
Ozonides did not damage pinto beans even above concentrations in reaction mixtures or outdoor air.
Verbatim
e0“Ozonides, formed in small yield by this reaction, are stable materials which do not damage pinto beans in any way even at concentrations higher than those arising in ozone-olefine reaction mixtures or in outdoor air.”
Claim · model-written summary
The toxic material was unstable in air at low concentrations, with a half-life of at most a few minutes.
Not reportedTaxon
Verbatim
e0“Evidence was obtained that the toxic material is unstable even at low concentrations in air. Its half life appears to be no more than a few minutes.”
Claim · model-written summary
Adding excess aldehyde or sulfur dioxide did not confirm the proposed identity of the toxicant.
- Treatment
- adding excess aldehyde or sulfur dioxidee0
- Outcome
- Attempts to confirm thise0
- Direction
- not successfule0
Not reportedTaxonComparator
Verbatim
e0“Attempts to confirm this by adding excess aldehyde or sulfur dioxide to scavenge the toxicant were not successful.”