A substance that prevents infection or decay, often used in medical or hygiene contexts.
Please apply antiseptic to the wound.
A substance added to food, wood, or other materials to prevent spoilage or decay.
This food contains no preservatives.
防腐剤 is a broader term for antiseptic or preservative used for non-food items like wood or specimens, while 保存料 refers specifically to preservatives added to food and consumables.
Compound of 防腐 (preservation, antisepsis) and 剤 (agent, chemical).