Chemical reagent preservation method that you can understand at a glance

Chemical reagents should be properly sealed and stored in the reagent bottle. For chemical agents that are prone to deterioration, volatilization or danger, special preservation methods should be used depending on the nature.

1 Drugs that react easily with oxygen, water vapor, carbon dioxide, etc. in the air should be sealed and stored. For example, potassium and sodium should be immersed in kerosene; white phosphorus should be placed in water to isolate it from air.

2 Drugs that are easy to deliquesce, volatilize, and absorb water should be sealed and stored. Such as solid NaOH, concentrated hydrochloric acid, concentrated sulfuric acid and the like.

3 See the light easily decomposed substance should be placed in a brown bottle, placed in a cool place. Such as AgNO3, concentrated HNO3 and so on.

4 liquid bromine is toxic and volatile, should be stored in the fine mouth bottle of the grinding mouth, add water seal, cover glass stopper (can not use rubber stopper), and placed in a cool place.

5 Volatile, flammable drugs should be sealed and stored in a cool place away from fire. Such as ethanol, ether, benzene and so on.

6 The container containing the drug should not react with the drug. For example, a reagent bottle filled with NaOH solution cannot be used with a glass stopper and a rubber stopper is applied.

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