Making anhydrous citric acid from citric acid monohydrate involves removing the water molecules associated with the monohydrate form. Here’s a simple method to achieve this:
### Materials Needed:
- Citric acid monohydrate (commonly available)
- Oven or drying oven
- Baking tray
- Food thermometer (optional)
- Airtight storage container
### Steps:
1. **Preheat the Oven**: Preheat your oven to a low temperature, around 105-120°C (220-250°F).