Heptane

Heptane is a straight-chain alkane hydrocarbon with the molecular formula C7H16 and CAS number 142-82-5. This colorless liquid belongs to the family of saturated hydrocarbons and has a molecular weight of 100.2 g/mol. Heptane is commonly found in petroleum and is widely used as a non-polar solvent in various industrial applications due to its excellent solvent properties for organic compounds.

Heptane is a colorless, volatile liquid with a characteristic gasoline-like odor at room temperature. It has a boiling point of approximately 98°C and a melting point of -91°C. The substance is highly hydrophobic, meaning it is virtually insoluble in water but readily miscible with other organic solvents such as alcohols, ethers, and other hydrocarbons. Its low polarity makes it an excellent non-polar solvent.

Heptane is primarily used as a non-polar solvent in laboratory and industrial applications, particularly for extracting oils, fats, and other organic compounds. It serves as a reference standard in octane rating determinations for gasoline, where it represents zero octane rating. Additionally, heptane is utilized in chromatography, as a cleaning agent for removing adhesive residues, and in the production of rubber cement and other industrial formulations.

Heptane should be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas or under fume hoods to prevent vapor accumulation, as heptane vapors can be harmful when inhaled. Avoid contact with skin and eyes, and eliminate all ignition sources including sparks, open flames, and hot surfaces, as heptane is highly flammable with a low flash point.

Heptane must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. Storage areas should be equipped with appropriate fire suppression systems and maintained at temperatures below 25°C when possible. Keep containers away from incompatible materials such as strong oxidizing agents, acids, and bases. Ensure proper grounding of containers during transfer operations to prevent static electricity buildup.

Heptane exposure requires immediate action depending on the type of contact. For skin contact, remove contaminated clothing and wash the affected area thoroughly with soap and water. In case of 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 ingested, do not induce vomiting and seek immediate medical attention.

Heptane must be disposed of as hazardous waste in accordance with local, national, and European waste regulations. Never dispose of heptane down drains, sewers, or into the environment. Contact licensed waste management companies for proper collection and disposal. Small quantities can often be recycled through solvent recovery processes. Always consult local authorities and follow waste classification codes for proper disposal documentation and procedures.

Heptane is classified under ADR Class 3 (flammable liquids), Packing Group II, requiring specific packaging and labeling for transport. Containers must meet UN specification standards and display appropriate hazard labels including flammable liquid warnings. Transport vehicles must be equipped with appropriate safety equipment and drivers must hold valid ADR certification. Proper shipping documentation including transport documents and emergency response information must accompany all shipments.

Heptane is regulated under European REACH legislation requiring registration for commercial use above certain tonnage thresholds. It falls under CLP regulation for classification, labeling, and packaging requirements. While not currently listed as a Substance of Very High Concern (SVHC), users must comply with workplace exposure limits and safety data sheet requirements. Industrial users should verify compliance with local environmental and occupational health regulations.

Heptane is available through OYSI, a European distributor of chemical products serving industrial and professional customers across Europe. OYSI provides high-quality heptane with proper documentation including certificates of analysis and safety data sheets. As a specialized chemical distributor, OYSI ensures compliance with European regulations and offers technical support for proper handling and application of heptane in various industrial processes.