ʻO ka inoa kemika o M221 he phosphate acrylate.He wai aniani melemele māmā me ka hoʻopili maikaʻi ʻana a me ka hoʻopaneʻe ʻana o ke ahi i nā substrate plastik a me ka metala.Manaʻo ʻia e hoʻohana ʻia i ka inika anti welding, metala, lāʻau a me ka plastic, ka uhi ʻana i ka electroplating a me nā māla ʻē aʻe.
Hoʻohana nui ʻia ka Phosphate ester e like me ka plasticizer retardant flame no ka resin PVC a me nā plastics like ʻole, nā mea synthetic a me nā mea polymer.ʻO nā mea kōkua hoʻoheheʻe phosphate ester he kūpono maikaʻi me ka polyvinyl chloride, acetic acid, nitrocellulose, polystyrene, polyethylene a me nā resins polyolefin ʻē aʻe a me ka synthetic rubber.