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6586695 
Journal Article 
Preliminary investigations of carbon tetrafluoride as an inert diluent gas to prevent explosions of mixtures of cyclopropane and oxygen 
Jones, CS; Faulconer, A; Baldes, EJ 
1950 
Yes 
Anesthesiology
ISSN: 0003-3022
EISSN: 1528-1175 
11 
5 
562-566 
English 
14790289 
BCI:BCI19512500017187 
Known mixtures were prepared by the use of a Beckman Model D 02 analyzer. Inflammability curves of C3H6-N2-O2 and C3H6-CF4-O2 mixtures were prepared obtaining 100 points for each curve. CF4 appeared to be a better quenching agent than N2. To a combination of 28% O2 in CF4, C3H6 can be added in any proportion without the mixture becoming inflammable. Since clinically useful C3H6 percentages lie below 40%, the O2 content of such mixtures can at all times be kept above the physiological requirements. The clinical application of CF4 must await further studies which will have to prove that CF4 is easily respirable, and that it has no toxicity for humans. 
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