Potassium hydroxide is widely used in different industries. It plays a very important role in any industry. Today we will explain that solid potassium hydroxide can be used as degreaser.
Solid potassium hydroxide is one of the commonly used deoilers. It reacts with stearic acid in animal and vegetable oils to produce water-soluble sodium stearate (soap) and glycerol (glycerol). When the concentration of potassium hydroxide is too low and the pH is 10.5, sodium stearate hydrolyzes and the oil removal effect decreases; if the concentration is too high, the solubility of sodium stearate and surfactant will be reduced, and the washability will be worse, and it will not be easy to clean after oil removal. Therefore, the amount of solid potassium hydroxide generally does not exceed 100g/L, usually between 50g/L and 70g/L.
The degreasing liquid made of solid potassium hydroxide is suitable for degreasing of steel, copper and copper alloys, aluminum and aluminum alloys (the degreasing time of aluminum and aluminum alloys should be strictly controlled within 1 minute to avoid corrosion). Solid potassium hydroxide is a strong corrosive agent. Protective articles should be worn well and safety should be paid attention to when using. Oil removal wastewater containing potassium hydroxide should be neutralized before discharging.
In addition, potassium hydroxide is suitable for all kinds of reactive dyes. It has high color feeding and reproducibility for all kinds of reactive dyes. It is suitable for all kinds of equipment, especially in low bath ratio and aerosol dyeing machine. The difference between inner and outer layers can be effectively solved in the production of cheese yarn.
Potassium hydroxide is a white powder or flaky solid with strong alkalinity and corrosiveness. It is soluble in water and ethanol and slightly soluble in ether. It is easy to absorb moisture in air and deliquescence. It absorbs carbon dioxide to form potassium carbonate. When it is dissolved in water, alcohol or treated with acid, it produces a lot of heat. But how much do you know about its deliquescence? Now let's give you a detailed explanation.
Easy deliquescence: Potassium hydroxide is easy to absorb carbon dioxide and water when exposed to air, and gradually becomes potassium carbonate. It is easy to dissolve in water and releases a lot of heat of dissolution when dissolving. It has strong water absorption. It can absorb water and dissolve in air, and absorb carbon dioxide and gradually become potassium carbonate. Soluble in ethanol, slightly soluble in ether. It has strong alkalinity and corrosiveness, and its properties are similar to those of caustic soda. Can cause burns, easy to absorb moisture and CO2 in the air.
Above is a brief introduction about the deliquescence of potassium hydroxide summarized for you. I hope you all have some learning. In addition, when you use potassium hydroxide, you must pay attention to avoid harming yourself. If you want to know more information, please continue to pay attention to us.