As basic chemical materials, many products produced by our company are used widely in the aspect of chemical raw materials. Because of strong oxidizing property, potassium permanganate, sodium permanganate, chromic anhydride and sodium dichromate are widely used for sugar refining, chemical catalyst and chemical oxidant, e.g., gas purification, enhancement of catalytic activity and oxidation reduction. In addition, chromic anhydride is decomposed slightly during fusion and releases oxygen at 200-250℃ which can be used as raw material for electrochromism in electroplating industry, hardware for daily use, etc.
Products:
The products are dangerous chemicals. The above instructions and methods are used only for reference. The above products shall be used correctly under the guidance of special work instructions. This website shall not take the responsibility of any behavior in violation of the special work instructions.
| Oxidability for saccharin refining | Production of saccharin by toluene method is that saccharin is made of toluene by chemical reactions like sulfonation, chlorination, ammoniation, oxidation and exsiccation, that is, toluene forms intermediate o-Toluenesulfonamide by chlorosulfonation and ammoniation and the latter is oxidized by oxidant (e.g., high potassium, high sodium, chromic anhydride) and ring closure to refine saccharin. | Production of saccharin by toluene chlorosulfonationmethod is that potassium permanganate/sodium permanganate, as oxidant, is usually added into alkaline medium. |
| Chemical oxidant | The product releases oxygen by decomposition at 200-250℃ and generates an intermediate compound between chromium trioxide and chromium oxide. | The product is decomposed slightly during fusion and generates peroxide in touch with ozone; burns by friction in touch with organic substance; and burns or explodes in touch with alcohol or benzene. |
| Raw material for oxygen generation | 2KMnO4===△===K2MnO4+MnO2+O2↑ |
Charge a dry test tube with 15g potassium permanganate at a temperature higher than 200℃ 1. Check the device for air tightness before test 2. Tilt the mouth of test tube down slightly to prevent the water generated from flowing back so as to break the bottom of test tube 3. Insert a gas outlet into the generation device in the way that it come out of the rubber plug a bit (not too long) in favor of exhaust of gas generated 4. Plug the mouth of test tube with a ball of cotton to prevent potassium permanganate powder from entering into the gas outlet so as to pollute the gas produced and the water in the tank 5. Preheat the tube first when heating 6. Collect the gas through exhaustion method by extending the gas outlet to near the bottom of gas-collecting vessel in favor of exhaust of air in the gas-collecting vessel to collect purer gas 7. Aftert test, move the gas outlet out of water surface first and then put out the alcohol burner to prevent the water in the tank from flowing back. |
| Removal of SO2 |
1. Make the gas mixture pass through saturated NaHCO3 solution. Solubility of CO2 in saturated NaHCO3 solution is small and SO2 can react with NaHCO3 to realease CO2 not bringing new impurities in. The reaction equation is as follows: little SO2:SO2+2NaHCO3==Na2SO3+H2O+2CO2↑ Excessive SO2:SO2+NaHCO3==NaHSO3+CO2↑ 2. Make the gas mixture pass through potassium permanganate solution. The reaction of SO2 with potassium permanganate can also not generate new impurities, but CO2 dissolved in water (KMnO4) is much than CO2 dissolved in saturated NaHCO3 solution. Sulfur dioxide reacts with potassium permanganate as follows: 5SO2+2KMnO4+2H2O=2MnSO4+K2SO4+2H2SO4 |
Make the gas mixture pass through the potassium permanganate solution |
| Potassium permanganate - chemical reagent | Potassium permanganate/sodium permanganate/sodium dichromate/chromic anhydride, as a basic chemical, is used widely for experiments and tests in chemical laboratories. | All products shall be used, stored and treated according to all test standards. National standards are available for potassium permanganate/sodium permanganate/sodium dichromate/chromic anhydride product and its use method. |
| Sodium permanganate - chemical reagent | ||
| Sodium dichromate - chemical reagent | ||
| Chromic anhydride - chemical reagent |
| Catalytic decomposition of liquid monopropellant | Manganese dioxide generated after potassium permanganate is deposed has a stable property and a catalytic action. Manganese is a kind of transition metal. The transition metal oxide contains many kinds of oxidation state metal ions and lattice defects, in favor of adsorption and activation of organic gas and oxygen, making this material exhibit good catalytic activity in catalytic combustion. | Potassium permanganate can be used to prepare transition metal oxide catalyst in to which other metallic oxide is added to enhance the activity of this catalyst. |
| Production of basic chromium sulfate |
Fused sodium bisulphate contains a little chromic anhydride which can be cooled and solidified for recovery; pour sodium bisulphate fusant into water directly (caution: avoid spilling) and dissolve it to form solution with concentration of 40～42°Bé的 solution, for preparation of basic chromium sulfate. Na2Cr2O7+2H2SO4→2CrO3+2NaHSO4+H2O |
Production of low temperature conversion catalyst (copper-zinc-chrome series low temperature conversion catalyst) and high temperature conversion catalyst (also known as medium temperature conversion catalyst or oxidation catalyst) as well as high pressure methanol synthesis catalyst. |
| Production of chromic anhydride | Na2Cr2O4+2H2SO4=2CrO3+2NaHSO4+H2O | Produced according to process requirement |
| Production of chromium powder | 8Na2Cr2O4+C12H22O11+24H2SO4=16Cr(OH)SO4+8Na2SO4+12CO2+27H2O | |
| Production of potassium dichromate | Na2Cr2O4+2KCl=K2Cr2O7+2NaCl | |
| Production of chrome oxide green | 4CrO3=2Cr2O3+3O2 |
