▁traditional ▁medicine ▁for ▁tre ating ▁skin ▁disease ▁and ▁li ver ▁disease . ▁ ▁It ▁is ▁used ▁as ▁a ▁fish ▁poison , ▁as ▁the ▁met abol ites ▁kar an jin ▁and ▁p ong am ol ▁are ▁both ▁to xic ▁to ▁fish . ▁ ▁B iod ies el ▁▁ ▁Many ▁studies ▁have ▁been ▁done ▁to ▁convert ▁p ong am ia ▁oil ▁into ▁b iod ies el . ▁The ▁following ▁table ▁shows ▁the ▁physical ▁properties ▁of ▁the ▁m eth yl ▁est ers ▁of ▁p ong am ia ▁oil ▁versus ▁the ▁A ST M ▁D 6 7 5 1 ▁and ▁EN ▁ 1 4 2 1 4 ▁b iod ies el ▁standards : ▁ ▁The ▁comparison ▁of ▁the ▁m eth yl ▁est ers ▁of ▁p ong am ia ▁oil ▁to ▁the ▁A ST M ▁D 6 7 5 1 ▁standard ▁for ▁b iod ies el ▁fu els ▁shows ▁that ▁processed ▁p ong am ia ▁oil ▁is ▁within ▁the ▁standards . ▁Research ▁has ▁shown ▁that ▁j atro pha ▁or ▁p ong am ia ▁oil ▁can ▁be ▁mixed ▁with ▁pal m ▁oil ▁to ▁achieve ▁an ▁improved ▁low - temper ature ▁vis cos ity ▁than ▁pure ▁pal m ▁oil ▁and ▁a ▁higher ▁ox id ation ▁stability ▁than ▁pure ▁j atro pha ▁or ▁p ong am ia ▁oil . ▁In ▁addition , ▁the ▁m eth yl ▁est ers ▁of ▁p ong am ia ▁oil ▁have ▁a ▁cloud ▁point ▁of ▁ 1 9   ° C , ▁which ▁is ▁outside ▁some ▁country ▁specific ▁standards , ▁and ▁a ▁pour ▁point ▁of ▁ 1