| http://www.w3.org/ns/prov#value | - Suitable blowing agents are low boiling halohydrocarbons, inorganic gases and, preferably, aliphatic hydrocarbons of 3 to 5 carbon atoms, such as propane, n-butane, isobutane, n-pentane, isopentane and/or neopentane. Mixtures of the stated
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