Overview
Isoparaffins are saturated hydrocarbons with branched molecular structures, derived from petroleum refining or synthetic processes. Unlike linear paraffins, their branching confers superior thermal stability and lower pour points, making them ideal for precision applications. They are classified by carbon chain length (e.g., C10–C16), with each range tailored to specific industrial needs. As niche alternatives to conventional solvents, isoparaffins combine low volatility with minimal environmental impact. Their inertness and purity (often >99%) meet stringent regulatory standards in cosmetics and pharmaceuticals, driving demand in high-value sectors.
Physical and Chemical Properties
Isoparaffins exhibit a unique balance of volatility and solvency, with evaporation rates adjustable via chain length. Their branched structure reduces crystallization risks, ensuring liquid state at subzero temperatures—critical for cold-climate lubricants. Flash points typically range from 60°C to 150°C, enhancing safety in handling. Chemically, they resist oxidation and hydrolysis, maintaining stability even in aggressive formulations. Low polarity limits water solubility but ensures compatibility with oils, resins, and silicones. Narrow boiling ranges (e.g., 190°C–210°C for C13 isomers) enable precise process control in coatings and adhesives.
Main Applications
In cosmetics, isoparaffins act as emollients and carrier fluids for fragrances, prized for their non-greasy feel and hypoallergenic properties. The pharmaceutical industry uses them as excipients in topical creams, leveraging their inertness and controlled evaporation rates. Industrial applications include metalworking fluids, where their thermal stability extends tool life, and ink formulations, where they reduce VOC emissions. Specialty grades serve as calibration standards in chromatography due to ultra-high purity. Emerging uses include biofuel additives and dielectric fluids.
Safety and Storage
While isoparaffins are generally safer than aromatic solvents, proper ventilation is recommended to avoid vapor accumulation. PPE such as nitrile gloves and goggles should be used during bulk handling. Spills can be contained with absorbent materials like vermiculite. Storage tanks should be grounded to prevent static ignition, and drums kept away from heat sources. Shelf life exceeds two years under inert atmospheres. Disposal must follow local regulations, though incineration is often preferred for energy recovery.
B2B Procurement Guide
Buyers should prioritize suppliers offering batch-specific certificates of analysis (CoA), detailing purity, sulfur content, and residual aromatics. For cosmetics/pharma, NSF or EP-grade certifications may be required. Bulk shipments (ISO tanks or flexitanks) reduce costs for orders above 20 metric tons. Negotiate pricing based on annual volume commitments, with typical MOQs of 1,000 kg for specialty grades. Spot prices fluctuate with crude oil markets, so long-term contracts are advisable. Key Asian suppliers include INEOS and Idemitsu, while ExxonMobil dominates North America.
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