noun-modifying (irregular)
oxygen-based; oxygen-type; oxygenated
Used attributively to describe products or processes that use oxygen, especially in contrast to chlorine-based alternatives. Common in contexts like cleaning agents and bleaches.
See also: 塩素系
酸素系漂白剤は色柄物にも使いやすい。
Oxygen-based bleach is easy to use even on colored fabrics.
塩素系と酸素系の洗剤を混ぜると危険です。
Mixing chlorine-based and oxygen-based detergents is dangerous.
Compound of 酸素 (oxygen) + 系 (type, system). The exact derivation is straightforward; the term is a modern technical coinage.