Overview
Anhydrous ethanol is a high-purity form of ethanol containing less than 1% water, making it ideal for cleaning applications where water residue is undesirable. It is widely used in industries such as electronics, pharmaceuticals, and laboratories due to its excellent solvent properties and rapid evaporation rate. Unlike denatured ethanol, anhydrous ethanol does not contain additives, ensuring it leaves no residues behind. This makes it particularly valuable for cleaning sensitive equipment and components where purity is critical.
Physical and Chemical Properties
Anhydrous ethanol is a colorless, volatile liquid with a characteristic odor. It has a boiling point of 78.37°C and a melting point of -114.1°C, which allows it to evaporate quickly at room temperature. Its density is 0.789 g/cm³, and it is miscible with water and most organic solvents. The high purity of anhydrous ethanol (typically ≥99.5%) ensures minimal water content, which is crucial for preventing corrosion or damage to sensitive materials. Its solvent properties make it effective at dissolving oils, greases, and other organic contaminants.
Main Applications
Anhydrous ethanol is primarily used for cleaning electronic components, such as circuit boards and connectors, where water-based cleaners could cause short circuits or corrosion. It is also widely employed in laboratories for sterilizing equipment and surfaces. In the pharmaceutical industry, it serves as a solvent for drug formulation and as a disinfectant. Additionally, it is used in precision manufacturing to clean optical lenses and other delicate parts without leaving streaks or residues.
Safety and Storage
Anhydrous ethanol is highly flammable and should be stored in a cool, dry, well-ventilated area away from heat sources and open flames. Proper grounding of containers is essential to prevent static discharge, which could ignite vapors. Personal protective equipment (PPE), such as gloves and safety goggles, should be worn when handling anhydrous ethanol to avoid skin and eye irritation. In case of spills, absorb with inert material and dispose of according to local regulations.
B2B Procurement Guide
When procuring anhydrous ethanol for cleaning purposes, verify the supplier’s certificates of analysis (COA) to ensure the product meets the required purity standards (typically ≥99.5%). Bulk purchases often offer cost savings, but ensure proper storage facilities are available. Consider suppliers with a track record of reliable delivery and quality consistency. Packaging options range from small bottles to large drums, depending on your usage volume. For reference, prices commonly range from $5 to $15 per liter, depending on quantity and purity.
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