防腐剤

1. Origins, structure, and basic meaning

• Structure: Spelling: 防腐剤. Reading: ぼうふざい. Core meaning: preservative.
• Basic usage: Representative examples: 授業で容器の表示から防腐剤という語を探した / 博物館の模型には防腐剤の瓶を模した小道具が置かれている.

2. Common pitfalls and similar expressions

• An additive preventing spoilage
  • 防腐剤 is a preservative used to slow microbial growth and spoilage. Do not call every additive or flavoring a preservative.