Heptane

Heptane is a straight-chain alkane hydrocarbon with the molecular formula C7H16 and CAS number 142-82-5. It belongs to the family of saturated hydrocarbons and has a molecular weight of 100.2 g/mol. This colorless liquid is commonly used as a non-polar solvent and reference standard in various industrial applications due to its chemical stability and well-defined properties.

Heptane is a colorless, volatile liquid with a characteristic petroleum-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 non-polar and insoluble in water but miscible with most organic solvents. It has a density of about 0.68 g/cm³ and exhibits low viscosity, making it an excellent solvent for non-polar compounds.

Heptane serves multiple industrial purposes, primarily as a non-polar solvent in chemical processes and analytical applications. It is widely used in chromatography as a mobile phase, in paint and coating formulations, and as a cleaning agent for removing oils and greases. Additionally, heptane functions as a reference standard in octane rating determinations for gasoline and serves as an extraction solvent in pharmaceutical and chemical industries.

Heptane requires careful handling due to its flammable nature and potential health effects. Always wear appropriate personal protective equipment including nitrile gloves, safety goggles, and protective clothing. Ensure adequate ventilation to prevent vapor accumulation and avoid ignition sources such as sparks, flames, or hot surfaces. Work in well-ventilated areas or under fume hoods, and have fire extinguishing equipment readily available.

Heptane must be stored in a cool, dry, well-ventilated area away from heat sources, sparks, and flames. Use original containers or approved flammable liquid storage containers made of compatible materials. Keep containers tightly sealed and store below 25°C if possible. Ensure storage areas are equipped with appropriate fire suppression systems and avoid storing near oxidizing agents or incompatible chemicals.

Heptane exposure requires immediate action depending on the contact type. 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. If inhaled, move the person to fresh air and seek medical attention if breathing difficulties occur. For ingestion, do not induce vomiting and seek immediate medical care.

Heptane disposal must comply with local and national hazardous waste regulations. The substance cannot be disposed of in regular waste streams or poured down drains due to its flammable nature and environmental impact. Contact licensed hazardous waste disposal companies for proper collection and treatment. Small quantities may be suitable for solvent recovery programs, while contaminated materials require specialized handling according to waste classification codes.

Heptane is classified under ADR Class 3 (flammable liquids), Packing Group II, requiring specific transport protocols. Shipments must use UN-approved packaging and proper hazard labels indicating flammable liquid classification. Transport vehicles need appropriate placarding and emergency equipment. Only certified carriers experienced in dangerous goods transport should handle heptane shipments, following all ADR regulations for European road transport.

Heptane falls under various European chemical regulations including REACH registration requirements for manufacturers and importers. While not classified as a Substance of Very High Concern (SVHC), it must comply with CLP regulation for classification, labeling, and packaging. Industrial users must maintain safety data sheets and implement appropriate risk management measures. Transport is regulated under ADR as a Class 3 flammable liquid.

Heptane is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across the continent. OYSI provides high-quality heptane with proper documentation including safety data sheets and certificates of analysis. As an established chemical distributor, OYSI ensures compliance with European regulations and offers reliable supply chain solutions for various grade requirements and packaging options.