Pyromellitic dianhydride (CAS No. 89-32-7) yog xim dawb lossis daj me ntsis crystalline khoom siv feem ntau siv los ua tus neeg sawv cev kho rau epoxy resins thiab ua tus neeg sawv cev sib txuas rau polyester resins. Nws yog flammable thiab tso tawm cov pa phem ntawm qhov kub thiab txias. Raws li covCatalogue ntawm Tshuaj lom neeg(2015 tsab), nws raug cais raws li tshuaj lom neeg thiab yuav tsum tau tswj thiab tshaj tawm xws li thaum xa tawm.
Thaum xa tawm Pyromellitic dianhydride, nws yuav tsum tau tshaj tawm rau Kev lis kev cai raws li txoj cai, thiab cov neeg xa khoom yuav tsum koom tes nrog kev soj ntsuam kev lis kev cai. Cov tuam txhab uas tsis tshaj tawm cov tshuaj lom neeg muaj kev phom sij tuaj yeem raug nplua rau kev tswj hwm. Tsis tas li ntawd, nws yog ib qho tsim nyog yuav tsum tau ua ntawv thov rau kev tshuaj xyuas cov khoom ntawm cov khoom xa tawm thiab ntsuas kev siv cov ntim ntim rau cov khoom txaus ntshai. Qhov no ua kom ntseeg tau tias cov ntim ntim tau raug soj ntsuam zoo thiab tau lees paub tias ua raws.