The chemical substance identified as Pyridine, with CAS Number 110-86-1, falls under the category of Reference Substances for Gas Chromatography (GC). It is classified within the substance group of Nitrogen heterocycles. This compound has a Molecular Weight of 79.10 g/mol. In the workplace, it requires various safety measures such as the use of safety goggles, safety gloves, and no open flames or smoking. The Boiling Point of Pyridine is 239°F at 760 mmHg (NTP, 1992), making it highly flammable, posing a significant risk if exposed to heat or open flames. Additionally, it is very toxic to aquatic life.

• CAS Number: 110-86-1
• Molecular Formula: C5H5N
• Molecular Weight: 79.10
• Exact Mass: 79.042199164
• Boiling Point: 239 °F at 760 mmHg (NTP, 1992)
• Melting Point: -44 °F (NTP, 1992)
• Vapour Density: 2.72 (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]
• H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]