Overview
2-Butoxyethanol is a glycol ether that serves as an important industrial solvent with excellent coupling properties. First developed in the early 20th century, it has become a workhorse chemical in many formulations due to its balanced solvent characteristics. The compound is produced through the reaction of ethylene oxide with n-butanol. As a member of the glycol ether family, it combines the solvent power of alcohols and ethers, making it particularly versatile for dissolving both polar and non-polar substances.
Physical and Chemical Properties
2-Butoxyethanol is a clear, colorless liquid with a relatively high boiling point compared to other common solvents. This property makes it useful in applications requiring slower evaporation rates. The substance is hygroscopic and forms azeotropes with water. Chemically, it demonstrates good stability under normal conditions but can form peroxides upon prolonged exposure to air. Its flash point is 61°C (closed cup), classifying it as a flammable liquid. The compound's balanced hydrophilic-lipophilic nature contributes to its effectiveness as a coupling agent in diverse formulations.
Main Applications
The primary use of 2-butoxyethanol is in water-based coatings, where it acts as a coalescing aid to help film formation. It's particularly valuable in latex paints, enabling proper leveling while preventing cracking during drying. Other significant applications include industrial and household cleaners (especially for tough grease), printing inks, and as a processing solvent in the manufacture of resins and dyes. In metalworking fluids, it serves as a coupling agent to maintain solution stability.
Safety and Storage
Proper handling of 2-butoxyethanol requires adequate ventilation and personal protective equipment including gloves and eye protection. The substance can be absorbed through skin and may cause central nervous system depression at high exposures. Storage should be in approved containers (typically stainless steel or polyethylene) away from oxidizing agents. Containers should be kept tightly closed when not in use. For large quantities, secondary containment is recommended to prevent environmental contamination in case of spills.
B2B Procurement Guide
When sourcing 2-butoxyethanol, industrial buyers should specify technical grade (typically 99% purity) for most applications. Pharmaceutical or electronic grades may be required for specialized uses at higher costs. Key procurement considerations include batch consistency, reliable supply chain, and proper documentation including SDS and certificates of analysis. Bulk shipments (ISO tanks or tank trucks) offer cost advantages for large-volume users, while 200L drums are common for smaller quantities.
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