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常見可燃氣體種類及爆炸下限指數
| 氣體類型分子式爆炸下限(％LEL)火災危險性分類容許濃度(mg/m3)蒸汽比重(空氣=1)甲烷CH45.0甲(甲A)0.55乙烷C2H63.0甲(甲A)1.04丙烷C3H82.1甲(甲A)1.56丁烷(正丁烷)C4H101.9甲(甲A)2.05戊烷(液體)C5H121.4甲B1000ppm2.48正己烷(液體)C6H141.1甲B500ppm2.97正庚烷/白電油CH3(CH2)5CH31.2甲B3.45辛烷(液體)C8H180.8甲B3.86壬烷C9H200.7乙A4.4環丙烷C3H62.4甲(甲A)1.88環戊烷C5H101.4甲B2.42異丁烷C4H101.8甲(甲A)2.01環己烷C6H121.3甲B2.9異戊烷C5H121.4甲B2.48異辛烷(液體)C8H181.0甲B3.86乙基環丁烷C２H５C４H７1.2甲B2.9乙基環戊烷C7H141.1甲B2.64乙基環己烷C8H160.9乙A3.9甲基環己烷C7H141.2甲B3.39乙烯C2H42.7甲(甲A)0.975丙烯C3H62.0甲(甲A)1.461-丁烯C4H81.6甲(甲A)1.932-丁烯(順)C4H81.7甲(甲A)1002.02-丁烯(反)C4H81.8甲(甲A)1002.0丁二烯C4H62.0甲(甲A)100ppm1.84異丁烯C4H81.8甲(甲A)2.0乙炔C2H22.3甲(甲A)0.93丙炔C3H42.5甲(甲A)1.38苯(液體)C6H61.3甲B40[皮]2.8甲苯(液體)C7H81.2甲B1003.9乙苯(液體)C8H101.0甲B3.66二甲苯(液體)C8H101.1甲B1003.69苯乙烯C8H81.1乙A403.6環氧乙烷C2H4O3.0甲A50.750環氧丙烷C3H6O2.8甲B2.00甲基醚C2H6O3.4甲(甲A)1.6乙醚C4H10O1.9甲B2-6乙基甲基醚C3H8O2.0甲A2.1二甲醚C2H6O3.4甲(甲A)1.59二丁醚C8H18O1.5甲B4.48甲醇(液體)CH3OH6甲B1.11乙醇(液體)C2H5OH3.3甲B1000ppm1.59丙醇(液體)C3H8O2.0甲B2002.10正丁醇(液體)C4H9OH1.4乙A2.55戊醇C5H12O1.2乙A3.04異丙醇C3H8O2.0甲B2002.07異丁醇C4H10O1.7乙A2.55甲醛CH2O7.0甲(甲A)0.99乙醛C2H4O4.0甲B1.52丙醛 C3H6O2.3甲B2.0丙烯醛C3H4O2.8甲B1.94丁醛C4H8O1.4甲B2.5丙酮(液體)C3H6O2.6甲B500ppm2.48(甲)丁酮(液體)C4H8O1.8甲B2002.48環己酮C6H10O1.1乙A3.4乙酸C2H4O25.4乙A2.10甲酸甲酯C2H4O24.5甲B2.07甲酸乙酯C3H6O22.7甲B2.55醋酸甲酯C3H6O23.1甲B2.56醋酸乙脂(EA)2.2甲B3.04醋酸丙脂CH3COOCH1.7甲B3.5醋酸丁脂CH3COOC4H91.4甲B3.99醋酸丁烯脂2.6甲B2.97丙烯酸甲酯C4H6O22.8甲B2.97呋喃C4H4O1.3甲B0.52.35四氫呋喃C4H8O2.3甲B200ppm2.5氯代甲烷(CMS)10.7甲(甲A)1.8氯乙烷C2H5Cl3.6(甲A)2.2溴乙烷C2H5Br6.7甲B3.79氯丙烷C3H7Cl2.6甲B2.71氯丁烷C４H９Cl1.8甲B3.2溴丁烷CH3(CH2)3Br2.6甲B4.7氯乙烯C2H3Cl3.6甲B(甲A)2.15烯丙基氯C3H5Cl2.9甲B2.64氯苯C6H5Cl1.3乙A6.51,2-二氯乙烷C2H4Cl26.2甲B253.351,1-二氯乙烯C2H2Cl26.5甲B3.4硫化氫H2S4.3甲B1.19二硫化碳CS21.0甲B10[皮]2.64乙硫醇C2H5SH2.8甲B2.14乙腈C2H3N3.0甲B1.42丙烯腈CH2:CHCN3.1甲B20ppm1.8硝基甲烷CH3NO27.1乙A2.11硝基乙烷C2H5NO23.4甲B2.58亞硝酸乙酯C2H5NO23.0甲B2.59氰化氫HCN5.6甲B0.3[皮]0.93甲胺CH3NH24.9甲(甲A)1.09二甲胺C2H7N2.8甲1.55砒啶C5H5N1.8甲B5ppm2.73氫氣H24.1甲0.07天然氣3.8甲城市煤氣4.0甲8.23液化石油氣1.0甲(甲A)輕石腦油1.2甲B2.49重石腦油1.0甲B2.79汽油(液體)C4-C121.1甲B3003-4噴氣燃料0.6乙A5.00煤油(液體)C10-C160.6乙A4.5氨氣NH315.7300.76柴油(液體)-0.60.15松節油(液體)C10H160.83004.84天那水(香蕉水)>1 |
| 說明：上述可燃氣體或可燃液體蒸氣所用傳感器的檢測原理為催化燃燒或半導體式或紅外式;本數據引自 |
