prov:value
| - These agents can be volatile fluid forming agents such as aliphatic hydrocarbons including ethane, ethylene, propane, propene, butene, isobutene, butane and isomers, cyclobutane, pentane and isomers, cyclopentane, hexane and isomers, cyclohexane, neopentane, acetylene, heptane, or mixtures thereof or other such aliphatic hydrocarbons having a molecular weight of at least 26 and a boiling point bel
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