Chemical Formula: KOH
Common Name: Potassium Hydroxide (Solid), Caustic Potash
CAS Number: 1310-58-3
UN number : 1813
Potassium Hydroxide (KOH) is a strong base, commonly known as caustic potash. It's an inorganic compound composed of potassium, oxygen, and hydrogen, with the chemical formula KOH. KOH is usually available as white or translucent pellets, flakes, or as a concentrated aqueous solution.
Here's a description and some common applications of Potassium Hydroxide:
Description:
Physical State: Potassium Hydroxide is typically found in solid form as pellets or flakes. In its pure form, it's a white, deliquescent solid that readily absorbs moisture from the atmosphere.
Solubility: It's highly soluble in water, which results in a strongly alkaline solution.
Chemical Reactivity: KOH is a highly reactive substance, capable of reacting exothermically with acids, releasing heat in the process. It's corrosive to many materials, including metals, and should be handled with care.
Applications:
1.Industrial and Chemical Processes: Potassium Hydroxide is widely used in various industrial processes, including:
Soap Making: It's a key ingredient in the saponification process to produce solid and liquid soap.
Biodiesel Production: KOH is used to catalyze the transesterification reaction in biodiesel production, converting triglycerides into biodiesel fuel and glycerol.
Petroleum Refining: It's utilized in refining processes to remove sulfur compounds and organic acids from petroleum products.
Textile Processing: KOH is used in the textile industry for mercerization, a process that improves the luster and strength of cotton fibers.
Alkaline Batteries: Potassium Hydroxide is used as an electrolyte in certain types of alkaline batteries.
2. Cleaning and Degreasing: Due to its strong alkalinity, KOH is used as a cleaning agent and degreaser in various applications, including:
Industrial Cleaning: It's employed to clean equipment and surfaces in industries such as food processing, metal fabrication, and manufacturing.
Household Cleaners: Potassium Hydroxide is found in some household cleaning products, especially those designed for heavy-duty cleaning tasks.
3.pH Adjustment: In laboratory settings and industrial processes, KOH is used to adjust the pH of solutions. Its strong alkalinity makes it effective for neutralizing acids and controlling pH levels.
4.Etching and Electroplating: Potassium Hydroxide is utilized in etching processes for metals and in the preparation of surfaces for electroplating.
It's important to handle Potassium Hydroxide with care due to its corrosive nature. Proper safety precautions, including the use of protective equipment and handling procedures, should be followed when working with KOH.