The analysis of the treatment method of rust stains in kindergarten school blazer is as follows:
1. Use 15% acetic acid to wipe the stain. You can also soak the stained part in the acetic acid solution and rinse it off with clean water the next day.
2. Moisten the stained area with 10% citric acid liquid or 10% oxalic acid liquid, then soak in concentrated salt water, wash and rinse off the next day.
3. White cotton and cotton-mixed fabrics are stained with rust. Place a small grain of oxalic acid on the stained area, drip some warm water, rub it gently, and rinse it off with clean water immediately.
4. If there are fresh lemons, you can squeeze out the juice and drop it on the rust stain by rubbing it with your hand. Repeat several times until the rust stain is removed, and finally wash it with soapy water. Or first soak the rusty area with boiling water, coat it with sour milk, and then wash it according to the weekly normal laundry program.