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n-Heptane (normal heptane, CAS 142-82-5) is a high-purity C₇ straight-chain alkane and one of the workhorse non-polar solvents of the pharmaceutical and fine-chemical industries. Free of the neurotoxic metabolite concern associated with n-hexane, it is widely adopted as the preferred replacement in extraction, API crystallisation, and precision cleaning, and it also serves as the 100-octane reference fuel standard. Royalchem supplies it at ≥ 99.5% purity with ≤ 50 ppm moisture as a clear, colourless liquid, delivered by drum, IBC, or ISO tank.
| Assay (GC) | ≥ 99.5% |
| Appearance | Clear, colourless liquid |
| Moisture (KF) | ≤ 50 ppm |
| Molecular Weight | 100.20 g/mol |
| Density (20 °C) | ≈ 0.684 g/mL |
| Boiling Point | ≈ 98 °C |
| Flash Point | ≈ −4 °C (closed cup) |
A workhorse anti-solvent and recrystallisation medium for high-purity APIs (e.g. aspirin, ibuprofen) and pharmaceutical intermediates, and an extraction solvent for active compounds — the standard lower-toxicity replacement for n-hexane in GMP processes.
A fast-evaporating, residue-free solvent for precision cleaning of electronic components, PCBs, and semiconductor devices, and for laboratory and analytical use including HPLC mobile phases and octane-rating reference fuel.
A process solvent for rubber cements and adhesives, polymerisation and polymer processing, and specialty paints and coating formulations requiring a clean, non-aromatic hydrocarbon diluent.
Standard Packaging:
140 kg steel drums, ISO tank, or flexitank for bulk — or to customer requirement. Distributed by Royalchem Spain from our Valladolid hub. Shelf life 24 months in original sealed packaging.
Storage Conditions:
Store in tightly closed containers in a cool, well-ventilated flammable-liquids store away from heat, sparks, static, and oxidising agents. Keep containers bonded and grounded during transfer; vapours are heavier than air and can travel to ignition sources. Prevent release to waterways.