| http://www.w3.org/ns/prov#value | - aromatic hydrocarbons such as benzene, toluene, xylene, cresol, chlorobenzene, styrene; chlorinated hydrocarbons such as methylene chloride, ethylene chloride, carbon tetrachloride, chloroform, ethylene chlorohydrin, dichlorobenzene; N,N-dimethylformamide, and hexane.
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