| http://www.w3.org/ns/prov#value | - Amongst the polymerization inhibitors may be used are any of those which are conventially known and used in the art such as hydroquinone, benzaldehyde, ascorbic acid, isoascorbic acid, resorcinol, tannin, symmetrical di- (beta-naphthyl) -p-phenylene diamine, phenolic resins, sulfur compounds and the like.
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