Imikhawulo yokuqhuma kwe-Acetylene iphakathi 2.5% futhi 80%, okubonisa ukuthi ukuqhuma kungenzeka uma ukugxila kwawo emoyeni kungaphakathi kwale mingcele. Ngaphandle kwalo mkhawulo, ukuthungela ngeke kuholele ekuqhumeni.
Ngokuningiliziwe, ukugxila kwe-acetylene kuphelile 80% noma ngaphansi 2.5% ngeke kuphumele ekuqhumeni, ngisho nangomthombo wokuthungela.