CAS 75-50-3: Trimethylamine (C3H9N)
Identity
| CAS Number | 75-50-3 |
| Molecular Formula | C3H9N |
| IUPAC Name | N,N-dimethylmethanamine |
| Molecular Weight | 59.11 g/mol |
| SMILES | CN(C)C |
| Synonyms | TMA, N,N-dimethylmethanamine, trimethylamine |
2D Structure
Physical Properties
| Density | 0.627 g/mL at 25°C |
| Boiling Point | 2.9°C |
| Melting Point | -117.1°C |
| Flash Point | -6.0°C |
| Vapor Pressure | 170.0 kPa at 20°C |
| Refractive Index | nD = 1.363 |
| Dielectric Constant | ε = 2.4 |
Safety & GHS Classification
FlammableGHS05Irritant
- H225: Extremely flammable liquid and vapor
- H302: Harmful if swallowed
- H314: Causes severe skin burns and eye damage
- H335: May cause respiratory irritation
- H412: Harmful to aquatic life with long lasting effects
Storage: Store as compressed gas or aqueous solution (25-40%). Extremely flammable gas with very strong fishy odor detectable at <1 ppm. Use in well-ventilated area away from ignition sources.
Material Compatibility Matrix
Plastics
| Material | Rating |
|---|---|
| PTFE | Excellent |
| PVC | Poor |
| PE | Good |
| PP | Good |
| PEEK | Excellent |
| PVDF | Good |
Rubbers
| Material | Rating |
|---|---|
| Viton | Poor |
| NBR | Poor |
| EPDM | Poor |
| Silicone | Poor |
| FKM | Poor |
Metals
| Material | Rating |
|---|---|
| Stainless 316 | Excellent |
| Aluminum | Good |
| Copper | Good |
| Brass | Good |
Applications
- Choline chloride production (animal feed additive)
- Trimethylamine N-oxide synthesis
- Cationic starch production (paper industry)
- Gas odorant
- Epoxy resin curing agent
- Corrosion inhibitor
- Ion exchange resin precursor
External References: PubChem