ʻAʻole waihoʻoluʻu, ʻākala a i ʻole melemele māmā wai hiki ke puhi ʻia. He ʻala ʻala ikaika. Hiki ke hui me ka ethanol (decomposition), diethylene glycol, ether, acetone, carbon tetrachloride, benzene, chlorobenzene, kerosene, a me ka aila ʻoliva.

1. Hoʻomākaukau ʻia e ka hopena o 2,4-diaminotoluene a me phosgene. ʻO ka mua, e hoʻoheheʻe i ka diaminotoluene paʻa i loko o ka benzene chlorinated, a e wela iā 70 ° C me ka hoʻoulu ʻana e loaʻa kahi hopena diaminotoluene chlorobenzene. Hoʻokomo ʻia ka phosgenated benzene oxide i loko o ka ipu hao phosgene haʻahaʻa a hoʻohui ʻia kekahi mau kukui wai. Ma hope o ke kinoea, e hoʻohui i nā kulu o ka solution diaminotoluene i hoʻomākaukau ʻia mai Chemicalbook i ka wā e hoʻoulu ai, e hana i ka phosgenation ma 40 ° C, a laila e hoʻokomo i ka mea haʻahaʻa haʻahaʻa phosgenation i loko o kahi ipu wela kiʻekiʻe no ka phosgenation kiʻekiʻe, a e hoʻoluʻu i ka wā e hoʻomehana ai, ma kahi o 4 mau hola, lawe ʻia ka hopena ma 120 ~ 125 ℃; ma hope o ka pau ʻana o ka hopena, loaʻa ia ma ka hoʻomaʻemaʻe ʻana me ka nitrogen, distilling, a me ka hoʻoponopono ʻana.