Undecane

Undecane is a straight-chain alkane hydrocarbon with the molecular formula C11H24 and CAS number 1120-21-4. It belongs to the paraffin family and consists of eleven carbon atoms connected in a linear chain with hydrogen atoms. With a molecular weight of 156.31 g/mol, undecane is a colorless liquid at room temperature that exhibits typical alkane properties including low reactivity and hydrophobic characteristics.

Undecane is a colorless, transparent liquid with a characteristic mild hydrocarbon odor at room temperature. It has a boiling point of approximately 196°C and a melting point around -25°C. The compound is practically insoluble in water due to its hydrophobic nature but readily dissolves in organic solvents such as alcohols, ethers, and other hydrocarbons. Its density is lower than water at approximately 0.74 g/cm³.

Undecane serves multiple industrial applications primarily as a solvent in chemical processes and as an intermediate in organic synthesis. It is commonly used in the production of surfactants, plasticizers, and other specialty chemicals. Additionally, undecane finds application as a calibration standard in analytical chemistry, particularly in gas chromatography, and as a component in some industrial cleaning formulations and petroleum-based products.

Undecane should be handled in well-ventilated areas using appropriate personal protective equipment including safety goggles, chemical-resistant gloves, and protective clothing. Avoid inhalation of vapors and direct skin contact. Ensure adequate ventilation to prevent vapor accumulation and eliminate ignition sources as undecane is flammable. Use anti-static equipment when transferring the liquid and maintain good industrial hygiene practices including washing hands thoroughly after handling.

Undecane must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. Use appropriate containers made of compatible materials such as steel or suitable plastics. Keep away from oxidizing agents and strong acids. Storage areas should be equipped with appropriate fire suppression systems and spill containment measures. Maintain storage temperatures below 30°C to minimize vapor generation.

In case of skin contact with undecane, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for at least 15 minutes and seek medical attention. If inhaled, move the person to fresh air immediately. If swallowed, do not induce vomiting and seek immediate medical attention. Always consult safety data sheets for specific emergency procedures.

Undecane disposal must comply with local, national, and international environmental regulations as a flammable liquid waste. The substance should be collected in appropriate containers and disposed of through licensed hazardous waste disposal companies. Incineration at high temperatures in authorized facilities is typically the preferred disposal method. Never dispose of undecane in sewers, water systems, or regular waste streams. Consult local environmental authorities for specific disposal requirements.

Undecane is classified under ADR transport regulations as Class 3 (flammable liquids), Packing Group III. It requires appropriate UN packaging specifications and must be transported in properly labeled and marked containers. Vehicles must carry appropriate placarding and emergency equipment. Drivers need ADR training certification for dangerous goods transport. Shipping documents must include proper shipping names and hazard classifications according to international transport regulations.

Undecane falls under standard chemical regulations including REACH (Registration, Evaluation, Authorization of Chemicals) in the European Union, requiring registration for quantities above one tonne per year. It must comply with CLP (Classification, Labelling and Packaging) regulation for proper labeling. The substance is not currently classified as SVHC (Substance of Very High Concern) and has no specific restrictions beyond standard chemical handling requirements.

Undecane is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. OYSI provides reliable supply chains and technical support for undecane procurement. As a professional chemical distributor, OYSI ensures compliance with European regulations and provides appropriate documentation including safety data sheets and certificates of analysis. Contact OYSI directly for pricing, availability, and specific packaging requirements for your industrial applications.