FIELD: coolants. SUBSTANCE: mixture has difluoroethane (R-152a) and isobutane (R-600a) at the following ratio of components, wt.-%: difluoroethane, 60-72; and isobutane, 28-40. Mixture has zero ozone-damaging potential and its components have near similar molecular mass. EFFECT: improved quality of mixture. 3 tbl
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| COOLING AGENT R-507 | 0 |
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Authors
Dates
1997-08-27—Published
1994-04-27—Filed