Overview
Guerbet Acid refers to a class of branched-chain fatty acids produced through the Guerbet reaction, which involves the condensation and hydrogenation of linear fatty alcohols. These specialty chemicals are named after French chemist Marcel Guerbet who first described the synthesis method in 1899. The branching structure gives Guerbet Acids unique properties compared to their linear counterparts, including enhanced solubility in oils, improved oxidative stability, and lower melting points. These characteristics make them valuable intermediates in various industrial and cosmetic applications.
Physical and Chemical Properties
Guerbet Acids exhibit physical properties that vary depending on their carbon chain length and branching pattern. Typically, they appear as viscous liquids at room temperature with mild, fatty odors. Their branched structure reduces crystallinity, resulting in lower pour points compared to linear fatty acids. Chemically, they demonstrate excellent thermal stability (up to 250°C) and resistance to oxidation. The branching creates steric hindrance that affects reactivity, making some chemical modifications more challenging than with linear acids. Their amphiphilic nature (containing both hydrophobic alkyl chains and hydrophilic carboxyl groups) contributes to surface-active properties.
Main Applications
In lubricant formulations, Guerbet Acids serve as high-performance base stocks and additives, particularly where low-temperature fluidity and thermal stability are required. They're used in gear oils, compressor lubricants, and metalworking fluids. The personal care industry utilizes these acids as emollients and thickeners in creams and lotions, where their branched structure provides non-greasy skin feel. They also function as intermediates for producing specialized esters and surfactants used in household and industrial cleaning products.
Safety and Storage
Guerbet Acids are generally classified as low hazard substances, but proper handling precautions should still be observed. They may cause mild skin irritation upon prolonged contact, so protective gloves are recommended during handling. Storage should be in tightly sealed containers made of stainless steel or polyethylene, protected from moisture and extreme temperatures. While not highly flammable, they should be kept away from strong oxidizers. Shelf life typically exceeds two years when stored properly below 30°C.
B2B Procurement Guide
When sourcing Guerbet Acids, buyers should clearly specify required parameters including carbon chain length (typically C16-C32), branching position (usually at the 2-position), and acid value range (commonly 150-200 mg KOH/g). Technical grade (90-95% purity) is sufficient for most industrial applications, while cosmetic uses may require higher purity (98%+). Bulk purchases (drum or tanker quantities) typically offer 15-30% cost savings compared to small packaging. Lead times vary from 2-8 weeks depending on customization requirements and supplier location.
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