7783-34-8

  • English Name: Mercury(II) Nitrate
  • CAS Number: 7783-34-8
  • Molecular Formula: Hg(NO₃)₂·H₂O
  • Molecular Weight: 342.62

Physical Properties

  • Appearance: White to yellowish crystalline solid.
  • Density: 4.3 g/cm³.
  • Melting Point: 79°C.
  • Boiling Point: Decomposes at 180°C.
  • Solubility: Soluble in water and nitric acid; slightly soluble in ethanol.
  • Sensitivity: Hygroscopic and light-sensitive.

Chemical Properties

  • Stability: Stable but decomposes upon heating to form mercury(II) oxide, nitrogen dioxide, and oxygen.
  • Reactivity:
    • Reacts violently with organic materials, powdered metals, and reducing agents.
    • Forms explosive mixtures with phosphorus and other reducing agents.
    • Decomposes in water to form basic salts.

Uses

  • Organic Synthesis: Used as a nitrating agent and catalyst.
  • Analytical Reagent: Used in chemical analysis.
  • Medicinal Chemistry: Used in the preparation of other mercury compounds.
  • Explosives: Used in the manufacture of mercury fulminate.

Safety Information

  • Toxicity: Highly toxic by ingestion and inhalation.
  • Health Hazards: Causes severe irritation to skin and eyes; inhalation may lead to respiratory distress.
  • First Aid:
    • Skin Contact: Rinse thoroughly with soap and water.
    • Eye Contact: Rinse with water for at least 15 minutes.
    • Inhalation: Move to fresh air and seek medical attention.
    • Ingestion: Do not induce vomiting; seek medical attention.
  • Storage: Store in a cool, dry place, away from light and organic materials.

Environmental Information

  • Hazardous Decomposition Products: Mercury(II) oxide, nitrogen oxides.
  • Ecotoxicity: Very toxic to aquatic life.

Transport Information

  • UN Number: UN1625.
  • Hazard Class: 6.1 (Poisonous material).

Packing and shipping