Industrial production method of hydrogen peroxide preparing alkaline hydrogen peroxide method: the production of alkaline hydrogen peroxide with a hydroquinone-containing air electrode, wherein each pair of electrodes consisting of an anode plate, plastic net, cationic membranes and quinone-containing air cathode composed of the electrode the work area, the lower end has entered the fluid distribution chamber and the discharge of fluid collection chamber with the fluid inlet orifice, multi-component electrodes were limited dipole series connection, extended into the anode loop lye plastic hoses for export with access to liquid collection manifold, multi-component electrode group assembled by the cell plates. Phosphoric acid neutralization method: characterized by the steps of preparing an aqueous solution of sodium peroxide from: ⑴ with phosphoric acid or sodium dihydrogen phosphate NaH2PO4 aqueous solution of the sodium peroxide and at pH9.0 ~ 9.7, the resulting Na2HPO4 and H2O2 solution. ⑵ subjecting said Na2HPO4 and H2O2 aqueous solution was cooled to + 5 ~ -5 ℃, so that the vast majority of Na2HPO4 Na2HPO4 · 10H2O hydrate to form precipitates. ⑶ in a centrifugal separator a mixture of hydrogen peroxide in an aqueous solution containing Na2HPO4 · 10H2O hydrates and had separated, so Na2HPO4 · 10H2O containing a small amount of Na2HPO4 was crystallized from aqueous hydrogen peroxide solution and separated. ⑷ would say Na2HPO4 and containing a small amount of hydrogen peroxide solution in the evaporator and evaporated to give containing H2O2 and H2O vapor, and concentrated salt solution containing hydrogen peroxide Na2HPO4 outflow from the bottom and returned neutralization tank. ⑸ of said vapor containing H2O2 and H2O vacuum distillation in the fractionation column to give about 30% H2O2 products. Experiment Note 1. KMnO4 solution when heated and placed cover should watch glass. 2. KMnO4 as an oxidizing agent is usually carried out in an acidic solution H2SO4, HNO3 or HCl can not be used to control the acidity. If it is found during titration brown turbid hydrogen peroxide, which is caused by the lack of acidity, it should be added immediately dilute H2SO4, as has reached the end, the experiment should be redone. 3. KMnO4 concentration calibration solution, heating the reaction can accelerate physical properties of hydrogen peroxide, but not heat to boiling, because overheating can cause decomposition of hydrogen peroxide oxidation of oxalate, a suitable temperature is 75 ℃ ~ 85 ℃. Temperature at the time to the end of the titration solution should not be less than 60 ℃. 4. Start the titration reaction is slow, so slow dropping, the solution had to be Mn2 +, due to Mn2 + on the reaction of catalytic hydrogen peroxide formula, the reaction speed, then the titration rate may accelerate; but be careful not to over- fast, slow near the end to be dropped more carefully. Luoyang hydrogen peroxide, hydrogen peroxide formula, Zhengzhou Longda Chemical (certified merchants) are provided by Zhengzhou Longda Chemical Products Limited. Road Zhiyuan, temper forward. Zhengzhou Longda Chemical Products Co., Ltd. (www.longdahuagong.com/) aims to become and you win symbiosis, strategic partners to move forward, more determined to become the most influential of inorganic acid companies, and you leap together to success !