| http://www.w3.org/ns/prov#value | - The blowing agent used is typically a hydrocarbon, chlorofluorocarbon, hydrochlorofluorocarbon, or hydrofluoro-carbon such as isobutane, n-butane, isopentane, normal pentane, dichlorodifluoromethane, dichlorotetrafluoroethane, chlorodifluoromethane, or mixtures thereof.
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