Iskar gas mai ƙonewa an raba ta zuwa iskar gas mai ƙonewa guda ɗaya da iskar gas mai ƙonewa gauraye, wadda ke da halaye na kasancewa mai ƙonewa da fashewa. Matsakaicin iyaka na yawan haɗuwar iskar gas mai ƙonewa iri ɗaya da iskar gas mai ɗauke da guba wanda ke haifar da fashewa a ƙarƙashin yanayin gwaji na yau da kullun. Iskar gas mai ɗauke da guba na iya zama iska, iskar oxygen ko wasu iskar gas masu ɗauke da guba.

Iyakar fashewa tana nufin iyakar yawan iskar gas ko tururi mai ƙonewa a cikin iska. Mafi ƙarancin abun ciki na iskar gas mai ƙonewa wanda zai iya haifar da fashewa ana kiransa da ƙarancin iyaka; mafi girman yawan ana kiransa iyakar fashewa ta sama. Iyakar fashewa ta bambanta da abubuwan da ke cikin cakuda.

Iskar gas da ake amfani da ita wajen ƙonewa da kuma fashewa sun haɗa da hydrogen, methane, ethane, propane, butane, phosphine da sauran iskar gas. Kowane iskar gas yana da halaye daban-daban da iyakokin fashewa.

Hydrogen

Haydarojin (H2)Iskar gas ce mara launi, mara wari, kuma mara dandano. Ruwa ne mara launi a matsin lamba mai yawa da ƙarancin zafi kuma yana narkewa kaɗan a cikin ruwa. Yana da matuƙar kama da wuta kuma yana iya fashewa da ƙarfi idan aka haɗa shi da iska kuma ya haɗu da wuta. Misali, idan aka haɗa shi da chlorine, yana iya fashewa ta halitta a ƙarƙashin hasken rana; idan aka haɗa shi da fluorine a cikin duhu, yana iya fashewa; hydrogen a cikin silinda kuma yana iya fashewa lokacin da aka dumama shi. Iyakar fashewar hydrogen shine 4.0% zuwa 75.6% (yawan juzu'i).

Methane

MethaneIskar gas ce mara launi, mara ƙamshi, mai zafin tafasa na -161.4°C. Ta fi iska sauƙi kuma iska ce mai kama da wuta wadda take da matuƙar wahalar narkewa a cikin ruwa. Wani sinadari ne mai sauƙi na halitta. Cakuda methane da iska a daidai gwargwado zai fashe lokacin da ya haɗu da tartsatsin wuta. Iyakar fashewa ta sama % (V/V): 15.4, ƙarancin fashewar % (V/V): 5.0.

Ethane

Ethane ba ya narkewa a cikin ruwa, yana narkewa kaɗan a cikin ethanol da acetone, yana narkewa a cikin benzene, kuma yana iya samar da gauraye masu fashewa idan aka haɗa shi da iska. Yana da haɗari a ƙone da fashewa lokacin da aka fallasa shi ga hanyoyin zafi da harshen wuta a buɗe. Zai haifar da mummunan halayen sinadarai lokacin da aka taɓa shi da fluorine, chlorine, da sauransu. Iyakar fashewa ta sama % (V/V): 16.0, ƙarancin fashewar % (V/V): 3.0.

Propane

Propane (C3H8), iskar gas mara launi, na iya samar da gaurayen abubuwa masu fashewa idan aka haɗa su da iska. Yana da haɗari a ƙone da fashewa idan aka fallasa shi ga hanyoyin zafi da harshen wuta. Yana yin martani mai ƙarfi idan aka taɓa shi da oxidants. Iyakar fashewa ta sama % (V/V): 9.5, ƙarancin fashewa % (V/V): 2.1;

N.butane

n-Butane iskar gas ce mai kama da wuta marar launi, ba ta narkewa a cikin ruwa, tana narkewa cikin sauƙi a cikin ethanol, ether, chloroform da sauran hydrocarbons. Tana samar da cakuda mai fashewa tare da iska, kuma iyakar fashewar shine 19% ~ 84% (maraice).

Ethylene

Ethylene (C2H4) iskar gas ce mara launi wadda ke da ƙamshi na musamman mai daɗi. Tana narkewa a cikin ethanol, ether da ruwa. Tana da sauƙin ƙonewa da fashewa. Lokacin da abun da ke cikin iska ya kai kashi 3%, tana iya fashewa da ƙonewa. Iyakar fashewar shine kashi 3.0 ~ 34.0%.

Acetylene

Acetylene (C2H2)iskar gas ce mara launi mai ƙamshi mai kama da ether. Yana narkewa kaɗan a cikin ruwa, yana narkewa a cikin ethanol, kuma yana narkewa cikin sauƙi a cikin acetone. Yana da matuƙar sauƙin ƙonewa da fashewa, musamman idan ya haɗu da phosphides ko sulfide. Iyakar fashewar shine 2.5-80%.

Propylene

Propylene iskar gas ce mara launi wadda take da ƙamshi mai daɗi a yanayin da take daidai. Tana narkewa cikin sauƙi a cikin ruwa da acetic acid. Tana da sauƙin fashewa da ƙonewa, kuma iyakar fashewar ita ce 2.0 ~ 11.0%.

Cyclopropane

Cyclopropane iskar gas ce mara launi wadda ke da ƙamshin man fetur. Yana narkewa kaɗan a cikin ruwa kuma yana narkewa cikin sauƙi a cikin ethanol da ether. Yana da sauƙin ƙonewa da fashewa, tare da iyakar fashewa na 2.4 ~ 10.3%.

1,3 Butadiene

1,3 Butadiene iskar gas ce mara launi kuma mara wari, ba ta narkewa a cikin ruwa, tana narkewa cikin sauƙi a cikin ethanol da ether, kuma tana narkewa a cikin maganin cuprous chloride. Ba ta da ƙarfi sosai a zafin ɗaki kuma tana ruɓewa da fashewa cikin sauƙi, tare da iyakar fashewa na 2.16~11.17%.

Methyl chloride

Methyl chloride (CH3Cl) iskar gas ce mara launi, mai sauƙin sha. Tana da ɗanɗano mai daɗi kuma tana da ƙamshi kamar ether. Tana narkewa cikin sauƙi a cikin ruwa, ethanol, ether, chloroform da glacial acetic acid. Tana da sauƙin ƙonewa da fashewa, tare da iyakar fashewa na 8.1 ~17.2%