Overview
Potassium acrylate is a potassium salt of acrylic acid, widely used in industrial and consumer applications due to its unique properties. It is a key monomer in the production of superabsorbent polymers (SAPs), which are essential in products like diapers, agricultural water retention agents, and medical dressings. The compound is valued for its ability to polymerize and form hydrogels that can absorb large amounts of water. This makes it indispensable in industries where moisture control is critical. Its synthesis typically involves the neutralization of acrylic acid with potassium hydroxide.
Physical and Chemical Properties
Potassium acrylate appears as a white crystalline powder with high solubility in water. It has a molecular weight of 110.15 g/mol and decomposes at around 300°C. The compound is known for its rapid polymerization when exposed to initiators or heat, forming cross-linked polymers. Its key chemical property is the presence of a reactive double bond in the acrylate group, which facilitates polymerization. This reactivity also means it must be handled with care to prevent unintended polymerization during storage or transport.
Main Applications
The primary use of potassium acrylate is in the manufacture of superabsorbent polymers (SAPs), which are used in hygiene products like diapers and adult incontinence pads. These polymers can absorb and retain large volumes of liquid relative to their own mass. In agriculture, potassium acrylate-based hydrogels are used to improve soil water retention, reducing the frequency of irrigation. The compound also finds applications in adhesives, coatings, and personal care products, where its water-absorbing properties are leveraged.
Safety and Storage
Potassium acrylate should be stored in a cool, dry environment, away from moisture and direct sunlight to prevent polymerization. Containers must be tightly sealed to avoid exposure to air, which can initiate unwanted reactions. Safety precautions include wearing gloves, goggles, and respiratory protection when handling the powder to prevent skin contact or inhalation. In case of exposure, rinse thoroughly with water and seek medical advice if irritation persists.
B2B Procurement Guide
When procuring potassium acrylate, buyers should prioritize suppliers with certifications such as ISO or GMP to ensure product quality. Key specifications to verify include purity (typically 98% or higher), moisture content, and absence of polymerization inhibitors. Bulk purchases often attract discounts, but storage capacity and shelf life should be considered. It's advisable to request samples for testing before large-scale orders to confirm compatibility with intended applications.
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