This product is a glass ampoule containing Pyridine D5, a deuterated acid and base, with a total volume of 7.5 mL, divided into 10 individual ampoules of 0.75 mL each. It belongs to the category of Deuterated Acids and Bases and is used in Nuclear Magnetic Resonance (NMR) spectroscopy. The CAS Number for this compound is 7291-22-7. It should be handled with caution due to its high flammability and toxicity to aquatic life.

• 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]