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Hexamine
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Description
Hexamine
Other Names: Hexamethylenetetramine, Urotropine, Methenamine
CAS Number: 100-97-0
Sum Formula: C₆H₁₂N₄
Molar Mass: 140.19 g/mol
Appearance: White crystalline powder
Hexamine is a heterocyclic organic compound formed by the condensation of formaldehyde and ammonia. It appears as a stable, non-hygroscopic solid and is widely used as a chemical intermediate, curing agent, and fuel tablet component. Its symmetrical structure and nitrogen content make it versatile in various industrial applications.
Chemical and Physical Properties
Density: 1.33 g/cm³
Melting Point: 280°C (sublimes without decomposition)
Boiling Point: Not applicable (sublimes)
Solubility in Water: Soluble (~87 g/L at 25°C)
Solubility in Organic Solvents: Slightly soluble in alcohols, insoluble in nonpolar solvents
Odor: Slightly ammonia-like
Stability: Stable under dry conditions; reacts with acids and strong oxidizers
Applications
Used as a curing agent for phenolic resins and plastics
Component of solid fuel tablets (e.g., for camping stoves)
Intermediate in the production of explosives (e.g., RDX)
Used in metal surface treatment, corrosion inhibition, and lubricants
Applied in laboratory and analytical chemistry as a nitrogen-rich compound
Safety
Signal Word: Warning
H228: Flammable solid [Danger Flammable solids]
H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
P210, P240, P241, P261, P272, P280, P302+P352, P321, P333+P317, P362+P364, P370+P378, and P501
First Aid Measures
Eye Contact: Rinse with plenty of water. Seek medical attention if irritation persists
Skin Contact: Wash with soap and water
Inhalation: Move to fresh air. Seek medical help if respiratory symptoms appear
Ingestion: Rinse mouth. Do not induce vomiting. Contact medical personnel if unwell
Handling and Storage
Store in a tightly sealed container in a cool, dry, well-ventilated area
Avoid contact with strong acids, oxidizing agents, and moisture
Prevent dust formation and inhalation during handling
Use appropriate PPE including gloves and dust protection