Chemical explosion

...However, in general, it is often used to refer to the phenomenon in which a sudden increase in pressure occurs due to some cause, and the pressure is released accompanied by the destruction of the container or a sound. There are two types of explosions: physical explosions, in which pressure is generated by physical processes such as the expansion of gases or liquids and phase changes, and chemical explosions, in which pressure increases due to chemical processes such as the decomposition and combustion of substances. Examples of the former are the rupture of a pressure vessel, a boiler explosion, and a volcanic explosion, while examples of the latter are gas explosions such as propane, explosions of liquids or solids such as gunpowder, and dust explosions that occur when coal or aluminum dust is suspended in the air.

*Some of the terminology that refers to "chemical explosion" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…しかし一般には，なんらかの原因により急激な圧力の上昇が生じ，容器の破壊や音響を伴って，その圧力が解放される現象をいうことが多い。爆発には，気体や液体の膨張，相変化などの物理過程が圧力の発生源になる物理的爆発と，物質の分解，燃焼などの化学過程により圧力が上昇する化学的爆発がある。圧力容器の破裂，ボイラーの爆発，火山の爆発などは前者の例で，プロパンなどのガス爆発，火薬のような液体や固体の爆発，石炭やアルミニウムの粉塵（ふんじん）が空気中に浮遊した状態で起こる粉塵爆発などは後者の例である。…

※「化学的爆発」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報