| http://www.w3.org/ns/prov#value | - The plasticizing agent may be camphor, castor oil, dioctyl phthalate, acetyl tributyl citrate, dibutyl sebacate, sebacic acid, alkyl resin, polyethylene-glycol, polyropylene-glycol, dibutylphthalate, or other commonly known plasticizers, singly or in combination.
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