This is a 10 mL glass bottle containing Pyridine D5, a deuterated pyridine compound commonly used in Nuclear Magnetic Resonance (NMR) spectroscopy. With a molecular formula of C5H5N and a molecular weight of 79.10 g/mol, this compound has a Boiling Point of 239 °F at 760 mmHg and a Melting Point of -44 °F. Due to its high flammability and toxicity to aquatic life, handle this product with caution and follow proper safety guidelines as indicated by the Danger signal word and relevant Hazard Statements.

• CAS Number: 7291-22-7
• 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]