捕ほ捉そく剤ざい

noun

scavenger (chemistry)

A substance added to a mixture or reaction to remove or deactivate unwanted species, such as free radicals, oxygen, or impurities.

• この反はん応のうでは、酸さん素そを除じょ去きょするために捕ほ捉そく剤ざいを加くわえる。

  In this reaction, a scavenger is added to remove oxygen.