Ma kahi ʻano o nā kūlana hana i hoʻohana ʻia ai ka pae Bt4 i hoʻohana ʻia

He kūpono ka papa IIB no nā kaiapuni kahi i hui pū ʻia ai nā kinoea IIB a me ka ea.

Hui kinoea/hui wela	T1	T2	T3	T4	T5	T6
IIA	Formaldehyde, toluene, methyl ester, acetylene, propane, acetone, ʻakika ʻakika, benzene, styrene, kalapona kalapona, ethyl acetate, ʻakika acetic, chlorobenzene, methyl acetate, chlorine	Methanol, ethanol, ethylbenzene, propanol, propylene, butanol, butyl acetate, amyl acetate, cyclopentane	Pentane, pentanol, hexane, ethanol, heptana, octane, cyclohexanol, turpentine, naphtha, ʻaila ʻaila (me ka hinuhinu), aila wahie, pentanol tetrachloride	Acetaldehyde, trimethylamine		Ethyl nitrite
IIB	Propylene ester, dimethyl etera	Butadiene, epoxy propane, ethylene	ʻO ka dimethyl ether, acrolein, hydrogen carbide
IIC	Hūhāhā, kinoea wai	Acetylene			Kalapona disulfide	Ethyl nitrate

Hoʻokaʻawale ʻia nā hoʻohālikelike pahū i nā pae mua no ka mining a me nā pae kiʻekiʻe no nā hale hana. I loko o ka pae lua, nā sub-classifications me IIA, IIB, a me IIC, i ka piʻi ʻana o ka hiki ke hōʻoia i ka pahū: IIA < IIB < IIC. The 'T' category denotes mahana wela pūʻulu. A 'T’ Hōʻike ka helu i ka mālama ʻana o nā mea hana i kahi mahana ma lalo o 135 ° C, me T6 ka pae palekana maikaʻi loa, ke kākoʻo nei i ka haʻahaʻa haʻahaʻa e like me ka hiki.

ʻO ka hope loa, ua hoʻolālā ʻia kēia huahana pahū-hōʻike ma ke ʻano he palekana i loko mea uila, i manaʻo ʻia no ka hoʻohana ʻana me nā kinoea Papa B kahi i ʻoi aku ka mahana o ka ʻili ma mua o 135°C.