1. Stable n'okpuru nkịtị okpomọkụ na nrụgide.
Ihe na-ekwekọghị ekwekọ: alkali, onye na-ahụ maka oxidizing, onye na-ebelata ihe.
2. Obere toxicity. Ọ nwere mmetụta na-akpali akpali na akpụkpọ ahụ na akpụkpọ anụ mucous, ma ọ dịghị njọ dị ka oxalic acid. Ọnụ ọnụ LD50 maka ụmụ oke bụ 1.54g/kg. Achọghị nchebe pụrụ iche mgbe a na-emepụta malic acid, mana cyanoacetic acid na sodium cyanide bụ ihe nsi dị ike, yabụ ị ga-akpachara anya mgbe ị na-ejikwa ogige ndị nwere otu cyano, na-eyi akụrụngwa mgbochi nje, wee mepụta usoro nchekwa kwekọrọ.
3. Dị na akwụkwọ ụtaba a gwọchara flue, akwụkwọ ụtaba burley na anwụrụ ọkụ.
4. Ọ nwere ike sublimated na agụụ.
