Your Questions and Comments
Your sales and customer service desk partners within China Amines Co will continue to serve you. You can also contact us via our headquarter office-
Email:info@chinaamines.com
China Amines Co
Product Profile
Trimethylamine (TMA)
• CAS No.: 75-50-3
• Molecular Formula: C3H9N
• Molecular Weight: 59.11 g/mol
• Appearance: Colourless gas (when uncompressed) with a strong fishy / ammonia-like odor
• Odor: Fishy at low concentration; ammonia-like at higher concentration
• Solubility: Miscible with water; forms basic aqueous solutions
Physicochemical Properties (Typical)
- Melting / Freezing Point: ~ –117.1 °C (solid under cryogenic conditions)
- Boiling Point: ~ 2.87 °C (gas liquefies at low temperature)
- Density (gas, 25 °C): ~ 0.627 kg/m³ (air = 1)
- Vapor Pressure: High (gas under ambient)
- Flash Point: ~ –7 °C
- Other: The gas is heavier than air and may flow along the ground
Purity & Quality Standards
- Purity: Typically ≥ 99.0% (for reagent / industrial grade)
- Moisture / Impurity Limits: Minimal water, volatile impurities, and non-amine contaminants
- Analytical Methods: Gas chromatography (GC), amine titration, and standard purity assays
- Documentation: Certificate of Analysis (COA) and Safety Data Sheet (SDS) provided with each batch
Safety & Handling
- Extremely flammable; forms explosive mixtures with air
- Causes severe irritation to eyes, skin, and respiratory tract upon inhalation
- The liquid or compressed form may cause frostbite upon contact with skin
- Avoid contact with acids, oxidizers, and reactive metals (e.g. copper, zinc)
- Use in well-ventilated areas; wear protective gloves, goggles, and protective clothing
Packaging & Storage
- Packaging: Supplied as compressed gas in cylinders or as aqueous solutions in sealed containers
- Storage Conditions: Store in cool, dry, well-ventilated area; keep below critical temperature; protect from heat and ignition sources
- Container Closure: Keep tightly closed; ensure cylinder valves are secure
- Shelf Life: Stable under recommended conditions if properly stored
Contact Information
For specification or order enquiries:
Email: info@chinaamines.com
COA, SDS and technical support available on request.