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现在有许多化学灭火剂。通常把化学灭火剂分成三大类:干粉灭火剂、泡沫灭火剂及气体灭火剂。在每一类化学灭火剂中又有好几个品种,每一个品种都有各自的特性,因而使得它适合扑灭某种类型的火灾。 例如,干粉灭火剂的残物对计算机可能造成的损害还要大。而用气体灭火剂如二氧化碳或卤代烷灭火剂来扑救则不会引起什么问题。但气体灭火剂也有它的局限性。为了取得最好效果,这种灭火剂应在密闭空间中使用。因为灭火剂必须保持足够的浓度,所以当二氧化碳用于室外火灾时可能是无效的。
There are many chemical extinguishing agents now. Chemical fire extinguishing agents are usually divided into three categories: dry powder fire extinguishing agents, foam fire extinguishing agents and gas fire extinguishing agents. There are several more varieties in each type of chemical agent, each of which has its own characteristics, making it suitable for the suppression of certain types of fire. For example, dry powder fire extinguishing agents can cause more damage to the computer. And gas fire extinguishing agents such as carbon dioxide or halogenated fire extinguishing agent to put out will not cause any problems. But gas fire extinguishing agents also have its limitations. For best results, this extinguishing agent should be used in a confined space. Because fire extinguishing agents must be kept in adequate concentrations, it may not be effective when carbon dioxide is used in outdoor fires.