Potassium polyacrylate (CAS 25608-12-2) is a fine - white powder. It is a potassium salt of polyacrylic acid. This polymer is highly water - absorbent and has excellent water - retention properties. The molecular weight can vary depending on the production process, generally ranging from several thousand to millions. It has a high degree of cross - linking in its structure, which contributes to its unique physical and chemical properties. The pH value of its aqueous solution is usually around 6 - 8, making it suitable for a wide range of applications. It is soluble in water, forming a viscous and clear solution. The product is produced in a factory setting with strict quality control to ensure its purity and consistency.
Agriculture: In agriculture, potassium polyacrylate is widely used as a soil conditioner. It can absorb and retain a large amount of water, reducing water evaporation from the soil. This helps to keep the soil moist for a longer time, especially in arid and semi - arid regions. It also improves the soil structure, making it more porous and allowing better root penetration. As a result, it promotes plant growth, increases crop yields, and reduces the frequency of irrigation.
Horticulture: For horticultural purposes, it is used in potted plants. It can hold water and nutrients, releasing them slowly to the plants. This is beneficial for indoor plants where over - watering or under - watering can be a common problem.
Diaper Industry: Due to its high water - absorbent capacity, it is a key ingredient in disposable diapers. It can quickly absorb and lock in large amounts of urine, keeping the baby's skin dry and preventing diaper rash.
Industrial Applications: In some industrial processes, it is used as a thickening agent, binder, or flocculant. For example, in the production of paints and coatings, it can improve the viscosity and stability of the products.
Agricultural Use: For soil application, the recommended dosage is usually 0.1% - 0.5% of the soil weight. First, mix the potassium polyacrylate evenly with the soil before planting. When watering the plants, the polymer will absorb the water and gradually release it to the roots.
Horticultural Use: In potted plants, mix about 1 - 2 grams of the product per liter of potting soil. Make sure the product is well - dispersed in the soil. Water the plant as usual, and the polymer will start to function.
Diaper Production: In the diaper manufacturing process, the potassium polyacrylate is evenly distributed in the absorbent core layer. Specialized equipment is used to ensure proper placement and distribution to maximize its water - absorbing efficiency.
Agricultural Case: In a farm in a semi - arid region of Australia, farmers applied potassium polyacrylate to their wheat fields. Before the application, the wheat yield was around 2 tons per hectare with frequent irrigation. After applying the product at a rate of 0.3% of the soil weight, the water - holding capacity of the soil increased significantly. The farmers were able to reduce the irrigation frequency by 30%. At the end of the season, the wheat yield increased to 2.5 tons per hectare, a 25% increase.
Horticultural Case: A nursery in California used potassium polyacrylate in their potted orchids. Previously, they had problems with over - watering, which led to root rot in some plants. After adding 1.5 grams of the product per liter of potting soil, the moisture in the soil was better regulated. The orchids grew healthier, with more vibrant flowers and stronger roots. The survival rate of the orchids increased from 80% to 95%.
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