乾燥剤

1. Origins, structure, and basic meaning

• Structure: 乾燥剤 (かんそうざい) is a noun for a desiccant or drying agent placed with goods to reduce moisture.
• Basic usage: 乾燥剤を取り出す treats it as the packet removed from snack packaging; 乾燥剤は食べられない gives a safety warning.

2. Common pitfalls and similar expressions

• Desiccant packaged with food
  • Its presence in a snack bag does not make it edible; は食べられない explicitly separates the drying agent from the food.