Hydrogen peroxide solution

Pure hydrogen peroxide is a light blue viscous liquid, which can be miscible with water in any proportion. It is a strong oxidant. The aqueous solution, commonly known as hydrogen peroxide, is a colorless and transparent liquid. Its aqueous solution is suitable for medical wound disinfection, environmental disinfection and food disinfection. Under normal conditions, it is slowly decomposed into water and oxygen, but the decomposition rate is extremely slow. The method to speed up the reaction is to add a catalyst such as manganese dioxide or irradiation with short wave radiation.

Chemical properties of hydrogen peroxide

1, oxidation hydrogen peroxide has a strong oxidation, is a very strong oxidant.

2, reducing and chlorine gas, potassium permanganate and other strong oxidant reaction is oxidized to oxygen.

3. In 10% sample solution 10mL, add dilute sulfuric acid test solution (TS-241) 5mL and potassium permanganate test solution (TS-193) 1mL. Bubbles should occur, and the purplish red color of potassium permanganate disappears. It is acidic to litmus and explosive to organic matter.

4. Take 1g of sample (accurate to 0.1mg) and dilute it with water to 250.0mL. Take 25mL of this solution, add 10mL dilute sulfuric acid test solution (TS-241), and titrate with 0.1mol/L potassium permanganate. 0.1mol/L per ml. Potassium permanganate is equivalent to hydrogen peroxide (H2O2)1.70mg.

5, in case of organic matter, heat decomposition release oxygen and water, in case of chromic acid, potassium permanganate, metal, carbonic acid reaction. To prevent decomposition, trace stabilizers such as sodium stannate, sodium pyrophosphate, etc., can be added.

6. Hydrogen peroxide is an extremely weak acid, H2O2=(reversible)=H++HO2- (Ka=2.4×10-12), so the peroxide of metal can be regarded as its salt.

7, pure hydrogen peroxide is very unstable, heated to 153°C will be violently decomposed into water and oxygen.