Distilled water refers to the water that has been distilled and condensed. The water that has been steamed twice is called re distilled water and the water that has been steamed three times is called triple distilled water. Water with low oxygen consumption, potassium permanganate and acid industrial distilled water are obtained by the method of distilled water. The article introduces the concept of distillation, distilled water, multiple distilled water, standard of distilled water, production method, advantages and application in detail, and makes a comparative analysis with deionized water, high-purity water and ultra pure water.
Preparation of pure water
Scorching slag content
Manganese (Mn) content
Iron (Fe) content
Chlorine (Cl) content
reduction of potassium permanganate substance (o) content
Resistivity (25 ℃)
Nitric acid and nitrite (in n)
Ammonium (NH4) content
Alkaline earth metal oxide (Cao meter)
Light blue or colorless
1. In life, when it is generally related to machines and electrical appliances, distilled water is mainly used for non-conductive, stable operation of machines and extended service life of electrical appliances.
2. In the pharmaceutical industry, the role of distilled water is due to low permeability. Using distilled water to wash the wound, the residual tumor cells in the wound may swell, rupture, necrosis and lose activity, so as to avoid tumor growth in the wound.
3. In the school chemistry experiment, some need to use distilled water, which has no electrolyte, free ion or impurity. You need to analyze the specific problems to see if you want to make use of its non-conductive property, whether it has low permeability, or whether there is no other ion and no chemical reaction.