1. oxidizing chemical properties of hydrogen peroxide (oil in white lead [basic lead carbonate] will generate black lead sulfide hydrogen sulfide in the air reacts with the hydrogen peroxide can be applied over the wash) (required alkaline medium) 2. reducing 3 In a sample of 10% hydrogen peroxide solution in 10ml purchase, add dilute sulfuric acid test solution (TS-241) 5ml and potassium permanganate test solution (TS-193) 1ml. Bubble should occur, and potassium permanganate coloration disappears. The litmus acidic. In case of organic explosive. 4. Take a sample 1g (accurate to 0.1mg) hydrogen peroxide wholesale, diluted with water to 250.0ml. Take this solution 25ml, 10ml add dilute sulfuric acid test solution (TS-241) 0.1mol / L potassium permanganate titration after use. Per milliliter 0.1mol / L. Potassium permanganate is equivalent hydrogen peroxide (H2O2) 1.70mg. 5. In case of organic matter, thermal decomposition and release oxygen and water, in case of chromic acid, potassium permanganate, metal powder violent reaction. In order to prevent the decomposition of hydrogen peroxide, may be added small amounts of stabilizers such as sodium stannate, sodium pyrophosphate and the like. 6 .. Hydrogen peroxide is a very weak acid: H2O2 = (reversible) = H ++ HO2- (Ka = 2.4 × 10-12). Therefore, the metal peroxides may be seen as a salt thereof. Hydrogen peroxide and a laboratory system of law: in 100ml15-18% sulfuric acid under ice cooling, barium peroxide is added gradually added in an amount to maintain the solution acidic degrees (about 40g). Upper solution was decanted to obtain a hydrogen peroxide solution. If necessary, it can be extracted. Extracted 4-5 times with each 20ml. The ether extract is dried and evaporated on a water bath (not higher than 40 ℃) ether was removed, the residue was moved to sulfuric acid dessicator bottle. This method can be obtained 50 percent hydrogen peroxide solution. Two: 90g of sodium peroxide in small portions under vigorous stirring added cooling with ice water 800ml20% sulfuric acid, the temperature should be kept no higher than 15 ℃. For 12 hours, filtered off the precipitated sodium sulfate decahydrate crystals. The filtrate was placed in a vacuum apparatus ground joint (5-10mm), at a bath temperature of 60-65 degrees Celsius (in the last 85 ℃) subjected to distillation under distillation amount of each of 100ml. Two series receptacle (second application by ice cooling) of distillate was collected, the first receptacle containing the product hydrogen peroxide content higher than 20% hydrogen peroxide effect, a second receptacle containing peroxide 3% hydrogen. The resulting hydrogen peroxide solution was further concentrated in concentrated sulfuric acid in a vacuum desiccator at room temperature, after three days to 25% of the solution was concentrated to 88%. A dilute solution of hydrogen peroxide can also be used to freeze water condensation method to achieve enrichment purposes. Jinshui hydrogen peroxide, Zhengzhou Longda Chemical, buy hydrogen peroxide by Zhengzhou Longda Chemical Products Limited. Zhengzhou Longda Chemical Products Co., Ltd. (www.longdahuagong.com/) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to society, and to welcome new and old customers to visit us sincere cooperation for a better future. Zhengzhou Longda Chemical - your trusted friend, Address: High-tech District, Zhengzhou City, Henan Province Chemical Road 99 (Chemical Road and Rita Road intersection 100 meters south west), Contact: Manager Xu.