Potassium hydroxide is a common inorganic base. Its chemical formula is KOH and its molecular weight is 56.1. It is a white powder or flake solid at room temperature. The properties are similar to sodium hydroxide, strongly alkaline and corrosive. The pH of 0.1mol/l solution is 13.5. It is easy to absorb moisture and deliquescence in the air and absorb carbon dioxide to form potassium carbonate. Soluble in about 0.6 parts of hot water, 0.9 parts of cold water, 3 parts of ethanol and 2.5 parts of glycerol, slightly soluble in ether. When dissolved in water, alcohol or treated with acid, a lot of heat will be generated. Moderately toxic, LD50 (rat, oral) 1230 mg / kg.
Potassium hydroxide is solid sodium hydroxide, and its chemical properties are particularly good. It is widely used in agriculture, industry and so on. Today, Xiaobian wants to introduce its application in the textile industry. Let's see.
1. Good color can be formed
Using this product instead of soda ash for color fixation, that is, using 1 / 10 amount instead of soda ash can also ensure sufficient color giving amount, and a small amount of excess will not affect the coloring of fiber during operation.
2. Wide adaptability to dyes and equipment
It is suitable for all kinds of reactive dyes and has high color development and reproducibility for all kinds of reactive dyes with different structures. In addition, potassium hydroxide shows its unique advantages in various equipment, especially low bath ratio and aerosol dyeing machine.
3. Shorten dyeing time
Potassium hydroxide, also known as buffered solid base, has less electrolyte and low ionic strength when dissolved. Therefore, the dyeing is slow in the process of adding alkali, so that the levelness of the dye is better. Whether dyeing dark or light colors, alkali can be added in about 20 minutes to shorten the dyeing time.