主要毒性物(wu)(wu)質：苯(ben)(ben)被(bei)公(gong)認為(wei)致癌物(wu)(wu)質，但苯(ben)(ben)類(lei)(lei)是(shi)樹(shu)(shu)脂材(cai)料(liao)的良(liang)好溶(rong)(rong)劑(ji)，它具(ju)有溶(rong)(rong)解(jie)性強，揮發速度快，價格便宜等(deng)優點，因此(ci)被(bei)廣泛用于樹(shu)(shu)脂的溶(rong)(rong)劑(ji)。在包裝中(zhong)(zhong)主要用于復合包裝材(cai)料(liao)粘和劑(ji)和塑料(liao)印刷油(you)墨的溶(rong)(rong)劑(ji)。由于在復合材(cai)料(liao)和塑料(liao)印刷過(guo)(guo)程(cheng)中(zhong)(zhong)苯(ben)(ben)類(lei)(lei)溶(rong)(rong)劑(ji)揮發不完全，包裝材(cai)料(liao)或容器生產設(she)備比較(jiao)簡陋時有可能造(zao)成苯(ben)(ben)類(lei)(lei)物(wu)(wu)質在包裝材(cai)料(liao)中(zhong)(zhong)殘留。食(shi)品包裝設(she)計(ji)過(guo)(guo)程(cheng)中(zhong)(zhong)苯(ben)(ben)類(lei)(lei)物(wu)(wu)質滲透到(dao)食(shi)品中(zhong)(zhong)，會導致食(shi)品中(zhong)(zhong)含有苯(ben)(ben)。