How to use potassium permanganate?

Potassium Permanganate Heating Potassium Permanganate → Potassium Permanganate+Manganese Dioxide+Oxygen Heating 2kMnO4 = = = K2MnO4+MnO2+O2 When heating, pay attention to plug a ball of cotton in the mouth of the test tube (to prevent the powder from entering the catheter for dyeing) to prevent the powder from blocking the catheter and causing an explosion. [Edit this paragraph] Chemical Name Chinese Name: Potassium Permanganate Color: Violet Black Chemistry English Name: Potassium Permanganate Chinese Common Name: Grey Manganese Oxide Molecular Formula: KMnO4 Molecular Weight: 158.04 [Edit this paragraph] Properties and stability: dark purple slender rhombic crystal with blue metallic luster. It tastes sweet and astringent. The density is 2.703 g/cm3. It is easily soluble in water, methanol and acetone when decomposed above 240℃, but it burns or explodes strongly when mixed with organic substances or flammable substances such as glycerol, sucrose, camphor, turpentine, ethylene glycol, ether and hydroxylamine. The aqueous solution is unstable. When it is decomposed by light, it produces gray-black manganese dioxide precipitate, which is attached to the vessel. It is a strong oxidant, which is more oxidizing under acidic conditions. It can be used as disinfectant and bleaching agent, and will fade when it reacts with strongly reducing substances, such as SO2 unsaturated hydrocarbon [edit this paragraph]. This product is toxic and corrosive. Inhalation can cause respiratory tract injury. Splash into eyes, irritate conjunctiva and even cause burns. It is brown and black after irritating the skin. Concentrated solutions or crystals are corrosive to skin and irritating to tissues. It will seriously corrode the oral cavity and digestive tract after oral administration. Burning sensation in mouth, upper abdominal pain, nausea, vomiting, oropharyngeal swelling, etc. If the oral dose is large, the oral mucosa will appear brown and black, swelling and erosion, gastric bleeding, liver and kidney damage, severe abdominal pain, vomiting, bloody stool, shock, and finally die of circulatory failure. The lethal dose of this pure product is about 10g. Dangerous nature: this product is combustion-supporting, corrosive and irritating, which can cause human burns. [Edit this paragraph] First-aid measures Skin contact: Take off the contaminated clothes immediately and rinse with plenty of running water for at least 15 minutes. See a doctor. Eye contact: lift the eyelid immediately and rinse it thoroughly with plenty of flowing water or normal saline for at least 15 minutes. See a doctor. Inhalation: leave the scene quickly and go to a place with fresh air. Keep the respiratory tract unobstructed. If you have difficulty breathing, give oxygen. If breathing stops, give artificial respiration immediately. See a doctor. Intake: rinse your mouth with water and give milk or egg white. See a doctor. Hazard characteristics: strong oxidant. It will explode in case of sulfuric acid, ammonium salt or hydrogen peroxide. Glycerol and ethanol can cause spontaneous combustion. Contact or mixing with organic substances, reducing agents and combustible substances such as sulfur and phosphorus may cause combustion and explosion. Harmful combustion products: potassium oxide and manganese oxide. Fire extinguishing method: use water, misty water and sand to extinguish the fire. [Edit this paragraph] Emergency treatment of leakage: isolate the leaked contaminated area and restrict access. It is recommended that emergency personnel wear dust masks (full face masks) and protective clothing. Don't touch the leak directly. Small amount of leakage: mixed with sand, dry lime or soda ash. Collect with a clean shovel in a dry, clean and covered container. Large amount of leakage: collected and recycled or transported to waste disposal site for treatment. Precautions for operation: close the operation and strengthen ventilation. Operators must be specially trained, strictly abide by the operating rules, and stay away from fire and heat sources. Smoking and eating are strictly prohibited in the workplace. Avoid dust. Avoid contact with reducing agent and active metal powder. When handling, handle with care to prevent the packaging and containers from being damaged. Equipped with corresponding varieties and quantities of fire fighting equipment and leakage emergency treatment equipment. Empty containers may leave harmful substances behind. Precautions for storage: Store in a cool and ventilated warehouse. Stay away from fire and heat sources. The temperature of the storage tank shall not exceed 32℃ and the relative humidity shall not exceed 80%. The package is sealed. Should be stored separately from reducing agent and active metal powder, and should not be mixed. The storage area should be equipped with suitable materials to control leakage. Respiratory system protection: It is recommended to wear a hood-type electric air supply filter dust respirator when it may come into contact with its dust. Eye protection: respiratory protection has been done. Physical protection: wear adhesive tape anti-virus clothing. Hand protection: wear neoprene gloves. Other protection: shower and change clothes after work. Maintain good hygiene habits. Prohibited compounds: strong reducing agent, active metal powder, sulfur, aluminum, zinc, copper and their alloys, flammable or combustible. Drug action: this product is used as disinfectant, deodorant and water purifier. Potassium permanganate is a strong oxidant, which releases new ecological oxygen when it meets organic matter and kills bacteria. Its bactericidal power is extremely strong, but it is easily weakened by organic matter, so its effect is superficial and not lasting. Can deodorize and disinfect, is used for sterilization and disinfection, and has astringent effect. When potassium permanganate is oxidized, it is reduced to produce manganese dioxide, which combines with protein to form protein salt complex, which can converge with permanganate ions. Some metal ions are also used as oxidants in analysis. It is also used as bleaching agent, toxic gas absorbent, carbon dioxide preparation, etc. Light a fire: According to the principle that potassium permanganate will generate heat and release oxygen when it contacts, rubs and collides with organic matter, 1 part sugar and 2 parts potassium permanganate are mixed and ground in the middle of dry sawdust. If the weather is dry, sawdust will burn quickly, with short time and good effect. It is reported that a spoonful of potassium permanganate is poured into the newspaper, and then a few drops of car antifreeze are dropped to knead the newspaper into a ball, which will catch fire within 30 seconds. Purified water: Potassium permanganate is a conventional additive for purifying water in waterworks. When taking water in the field, add three or four potassium permanganate to 1 liter of water, and you can drink it in 30 minutes. Anti-inflammatory: Potassium permanganate is a strong oxidant, which releases new ecological oxygen when it meets organic matter and has bactericidal effect. Its bactericidal power is extremely strong, and the solution with the concentration of 1: 2000- 1: 5000 is commonly used in clinic to wash skin wounds, ulcers, thrush, abscesses, etc. Solution gargle is used to remove bad breath and disinfect the mouth. Pay attention to the accurate concentration of the solution, too high concentration will cause local corrosion and ulceration. Time should be considered when preparing the solution. Potassium permanganate releases oxygen slowly, and the soaking time must reach 5 minutes to kill bacteria. Cold boiled water should be used to prepare the solution, and hot water will be ineffective. Gastric lavage: When taking plant poisoning by mistake in the field, gastric lavage should be done as soon as possible to reduce the absorption of toxic substances. The simple method is gastric lavage with1:1000-1:4000 potassium permanganate solution. A simple way to test the concentration is to directly observe the lavender or reddish solution. If the solution is purple or deep purple, its concentration has reached1:100-1:200. This extremely high concentration of potassium permanganate solution will cause gastric mucosal ulceration, and it is absolutely not allowed to be used for gastric lavage. Taking potassium permanganate solution with extremely high concentration by mistake will cause poisoning, so pay attention to safe use. Mark: When you get lost in the snow, you can scatter potassium permanganate particles on the snow, and the purple produced can guide rescuers. However, the color can only last for about two hours. Medical clinical use: it is a strong oxidant, which can kill bacteria, and it is a common disinfection drug necessary for families. In gynecology, 0.0 1% potassium permanganate aqueous solution can be used for vaginal irrigation; Treatment of leukorrhagia with 0.02% aqueous solution in sitz bath; During honeymoon, cleaning vulva with 0.05% aqueous solution can prevent urinary system infection. The incidence of female hemorrhoids is high. Soaking in a basin with 0. 1% water solution can relieve itching and pain, prevent infection and promote the repair of prolapsed hemorrhoids. In addition, don't use potassium permanganate for a long time to avoid flora imbalance in vagina. When using potassium permanganate, it should also be noted that because potassium permanganate releases oxygen slowly, the soaking time must reach 5 minutes to kill bacteria. Cold boiled water should be used to prepare aqueous solution, and hot water will make it decompose and fail. Usually, the prepared aqueous solution can only be stored for about two hours. When the solution turns brown-purple, it loses its disinfection effect. Therefore, it is best to use it together.

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