noun
chemical composition; chemical component
Refers to the chemical makeup or a specific chemical constituent of a substance. Common in scientific and technical contexts.
この鉱物の化学成分を分析した。
We analyzed the chemical composition of this mineral.
食品の化学成分が表示されている。
The chemical components of the food are listed.
化学組成 is a more formal or technical term for 'chemical composition', often used in geology or materials science, while 化学成分 is broader and can refer to individual components.
Compound of 化学 (かがく, 'chemistry') and 成分 (せいぶん, 'component, ingredient').