Kedu ọkwa nke mgbawa-ihe akaebe dị elu, CT1 ma ọ bụ CT4

A na-ahụta nhazi ihe mgbawa CT4 dị elu.

Klas na Ọkwa	Igwe ọkụ ọkụ na otu
-	T1	T2	T3	T4	T5	T6
-	T 450	450≥T 300	300≥T 200	200≥T 135	135≥T 100	100≥T：85
I	Methane
IIA	Ethane, Propane, Acetone, Phenethyl, Ene, Aminobenzene, Toluene, Benzene, Amonia, Carbon Monoxide, Ethyl acetate, Acid acid	Butane, Ethanol, Propylene, Butanol, Acid acid, Butyl Ester, Amyl acetate acetic anhydride	Pentane, Hexane, Heptane, Decane, Octane, mmanụ ụgbọala, Hydrogen sulfide, Cyclohexane, mmanụ ụgbọala, Kerosene, Diesel, Mmanụ ala	Eter, Acetaldehyde, Trimethylamine		Ethyl nitrite
IIB	Propylene, Acetylene, Cyclopropane, Coke oven gas	Epoxy Z-Alkane, Epoxy Propane, Butadiene, Ethylene	Dimethyl Ether, Isoprene, Hydrogen sulfide	Diethylether, Dibutyl Ether
IIC	Mmiri gas, Hydrogen	Acetylene			Carbon Disulfide	Ethyl nitrate

A tụlere niile, ngwaọrụ ọ bụla na-ejide akara IIC, na-egosi otu n'ofe metrik a; Otú ọ dị, A na-ahụ ihe dị iche iche na nhazi okpomọkụ ha: Ngwa T6 nwere oke okpomoku elu nke 85°C, Ngwa T4 kacha elu na 135°C, na ngwaọrụ T1 nwere ike iru 450°C.

A na-akwanyere akụrụngwa na-egosi mgbawa T4 nke ukwuu ma nwee ike dochie anya ngwaọrụ T1 zuru oke. N'ezie, iji CT4 dochie akụrụngwa CT1 na ngwa ọ bụla na-eme ka nchekwa.