What Is Butyl Acrylate?
Butyl acrylate, with the chemical formula C4H9O2CCH=CH2 and CAS number 141-32-2, is an ester of acrylic acid and n-butanol. This colorless to slightly pale-yellow flammable liquid has a strong ester odor and is also known as n-Butyl acrylate or BA.
Uses of Butyl Acrylate
Butyl acrylate is primarily utilized as a raw material for synthetic polymers, including both homopolymers and copolymers with other acrylates and esters. These polymers find applications in fiber treatments, adhesives, paints, acrylic resins and fibers, and acrylic rubber, due to their ability to adjust the glass transition temperature (Tg) and enhance flexibility.
1. Acrylic Rubber
Known for its excellent heat and oil resistance, acrylic rubber is used in automotive and industrial machinery for packing, seals, gaskets, and hoses.
2. Acrylic Resin
Acrylic resin’s exceptional transparency and workability make it a popular inorganic glass substitute for windows, light fixture covers, and various daily items.
3. Acrylic Paint
Chosen for its affordability and vibrant colors, acrylic paint is primarily used indoors due to its limited weather resistance.
4. Acrylic Adhesives
These adhesives are favored for their transparency, weather, and heat resistance, available in both two-component and one-component types, suitable for bonding plastics and metals.
5. Other Uses
Additional applications include paper and leather processing for enhanced resistance qualities and in cosmetics as binding agents to retain moisture.
Properties of Butyl Acrylate
With a melting point of -64 °C and boiling point of 145 °C, butyl acrylate is a liquid at room temperature, insoluble in water but soluble in organic solvents. Its density is 0.90 g/mL at 20°C. Classified as a Class 4 hazardous material, it requires specific storage and firefighting measures. Butyl acrylate polymerizes easily with initiators, necessitating inhibitors in commercial products to prevent uncontrolled reactions.
Other Information on Butyl Acrylate
Toxicity of Butyl Acrylate
Butyl acrylate poses various health hazards, including skin and eye irritation, potential for allergic reactions, and organ damage with acute or repeated exposure. It is also toxic to aquatic life. Protective measures, adequate ventilation, and proper disposal in compliance with regulations are crucial for safe handling.