Ikibanza cyamakara, kizwi kandi nka coal tar igisibo kivuga ibisiba byasigaye nyuma yo gutandukanya amakara no gutunganya amakara kugirango ukureho ibice byamakara. Mubisanzwe ni amazi meza, igice kinini cyangwa gikomeye, umukara mumabara na glossy, hamwe nibirimo bya karubone nka 92% ~ 94% hamwe na hydrogen hafi ya 4% ~ 5%.
Ibice byingenzi byibice byamakara tar ni polycyclic na polycricarbone ya hydrocarbone nibikomokaho. Ibigize byihariye byimiterere biragoye cyane, kandi itandukaniro ryubwoko bwubutaka nyabwo no gutunganya uburyo bwo gutunganya birashobora kandi kuganisha ku itandukaniro mubigize. Uburyo bugezweho cyane cyane bushingiye ku bushyuhe bworoshye kandi bugaragaza.
Ikibuga cyamakara gifite ibiranga bikurikira:
Ukurikije ingingo zitandukanye, ikibuga cyamakara gishobora kugabanywamo ibyiciro bitatu: ikibuga cyubushyuhe buciriritse, ubushyuhe bukabije, buri cyiciro cyinshi, icyiciro cya 1 cyakoreshejwe:
Iyo ukoresheje amakara tar, hagomba kwitondera uburozi bwayo kugirango wirinde ubuzima bwabantu, kandi uburinzi bwibidukikije nabwo bugomba kwitabwaho kugirango bugabanye umwanda mubidukikije mugihe cyo gutanga umusaruro no gukoresha.