The chemical substance identified as N-Pentane (CAS 109-66-0) falls under the category of Reference Substances for Gas Chromatography (GC), within the broader context of Natural & Reference Materials, Phytochemicals, and Reference substances HPLC/TLC/GC. It is a saturated aliphatic hydrocarbon with a Molecular Weight of 72.15 g/mol. In the workplace, it carries several warning labels, including "Prohibition label," "Caution - inflammable material," "Use safety goggles," and "Wear safety gloves." The recommended indicative occupational exposure limit value for an 8-hour period is 3000 mg/m3 (1000 ppm) according to Directive 2006/15/EC.

• CAS Number: 109-66-0
• Molecular Formula: C5H12
• Molecular Weight: 72.15
• Exact Mass: 72.093900383
• Boiling Point: 97 °F at 760 mmHg (NTP, 1992)
• Melting Point: -202 °F (NTP, 1992)
• Vapour Density: 2.48 (NTP, 1992) - Heavier than air; will sink (Relative to Air)
• GHS Signal Word: Danger
• Hazard Statements:
• H225: Highly Flammable liquid and vapor [Danger Flammable liquids]
• H224 (16.4%): Extremely flammable liquid and vapor [Danger Flammable liquids]