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Send EmailTrimethylamine, TMA, 75-50-3
| Property | Detail |
|---|---|
| Chemical Name | Trimethylamine |
| English Name | Trimethylamine (TMA) |
| Chemical Formula | C₃H₉N |
| CAS No | 75-50-3 |
| EC No | 200-875-0 |
| Molecular Weight | 59.11 g/mol |
| Appearance | Colorless gas or clear liquid solution |
| Odor | Pungent, fish-like |
| Grade | Technical / Industrial |
Trimethylamine is a tertiary amine with a characteristic fish-like odor, colorless, flammable and strongly basic in nature. It is commercially available in anhydrous form or as an aqueous solution (25%, 30%, 40%, 45%). It is an important intermediate in the chemical, pharmaceutical, agricultural chemicals, water treatment and surfactant industries.
| Property | Value |
|---|---|
| Appearance | Colorless gas or clear liquid solution |
| Odor | Pungent, fish-like |
| Chemical Formula | C₃H₉N |
| CAS No | 75-50-3 |
| Molecular Weight | 59.11 g/mol |
| Boiling Point (Pure Product) | 3.5 °C |
| Melting Point | -117 °C |
| Density (20 °C, pure product) | 0.64 g/cm³ |
| pKa | 9.8 |
| Water Solubility | Completely soluble |
| Flash Point | Highly flammable |
The values indicated are typical physical properties.
| Parameter | Specification |
|---|---|
| Trimethylamine (TMA) | 45 ± 1% |
| Water | Balance |
| Color (APHA) | Max. 20 |
| Moisture | Appropriate |
| Iron (Fe) | Max. 1 ppm |
| Appearance | Clear, particle-free |
| Parameter | Specification |
|---|---|
| TMA Content | 45 ± 1% |
| pKa | 9.8 |
| Density (20 °C, pure product) | 0.64 g/cm³ |
| Iron (Fe) | Max. 1 ppm |
| Color (APHA) | Max. 20 |
| Water Solubility | Completely soluble |
| Property | Value |
|---|---|
| Physical State | Gas (pure) / Liquid solution (commercial) |
| Color | Colorless |
| Odor | Pungent, fish-like |
| Boiling Point | 3.5 °C (pure product) |
| Melting Point | -117 °C |
| Density (20 °C, pure product) | 0.64 g/cm³ |
| Flash Point | Highly flammable |
| Clarity | Clear, particle-free |
| Sector | Use |
|---|---|
| Chemical Industry | Production of quaternary ammonium compounds, intermediate in organic synthesis, catalyst production |
| Water Treatment | Cationic polymer production, water conditioning chemicals |
| Agricultural Chemicals | Pesticide and herbicide synthesis, plant protection products |
| Pharmaceutical Industry | Pharmaceutical intermediates, active ingredient synthesis |
| Surfactants | Disinfectant raw materials, anionic and cationic surfactant production |
| Oil and Gas | Corrosion inhibitors, production chemicals |
| Packaging Type | Description |
|---|---|
| ISO Tank | Bulk shipment |
| Tanker | Bulk shipment |
| IBC | 1000 kg |
| HDPE drum | 200 kg |
| Pressurized tank systems | Depending on product form |
Store in cool and well-ventilated areas.
Keep away from heat, sparks and open flames.
Keep separate from oxidizing agents.
Keep containers tightly closed.
Recommended storage temperature: 5–30 °C.
Under suitable storage conditions: 12 months (may vary depending on manufacturer specification)
Extremely flammable.
Harmful if inhaled.
Can cause severe irritation to skin and eyes.
Vapors may form explosive mixtures with air.
Chemical-resistant gloves
Protective goggles and face shield
Respiratory protective equipment
Chemical-resistant work clothing
| Exposure | Measure |
|---|---|
| Inhalation | Move to fresh air; seek medical attention if breathing is difficult |
| Skin Contact | Wash with plenty of water and soap; remove contaminated clothing |
| Eye Contact | Rinse with plenty of water for at least 15 minutes; seek medical attention |
| Ingestion | Rinse mouth, drink plenty of water; seek medical attention |
| Property | Value |
|---|---|
| Flammability | Extremely flammable |
| Suitable Extinguishing Media | Water spray, foam, dry chemical, CO₂ |
| Specific Hazards | Vapors may form explosive mixtures with air; toxic gases (NOₓ) are released upon combustion |
| Protective Equipment | Self-contained breathing apparatus and full protective clothing should be used |
Wear personal protective equipment.
Remove ignition sources.
Collect spilled liquid with inert absorbent material.
Prevent entry into drains and water sources.
Dispose of in accordance with waste disposal legislation.
Ensure good ventilation.
| Property | Value |
|---|---|
| Stability | Stable under normal storage conditions |
| Hazardous Decomposition Products | NOₓ, CO, CO₂ upon combustion |
| Polymerization | Does not polymerize |
| Reactivity | Reacts violently with oxidizing agents |
Strong oxidizing agents
Acids
Heat, sparks and open flame sources
Hot surfaces
| Information | Value |
|---|---|
| Transport Class | Class 2.1 (Flammable Gas) |
| UN Number | UN 1083 (Anhydrous Trimethylamine) |
| Packing Group | - |
| Transport Conditions | Transport in closed, well-ventilated vehicles; keep away from ignition sources; tanks and equipment must be grounded |
| Subject | Statement |
|---|---|
| Intended Use | Industrial use (chemical, pharmaceutical, agricultural, water treatment, surfactants, oil and gas) |
| Food Contact | Not suitable for direct food contact |
| REACH | The product should be evaluated under the REACH regulation; consult the SDS for exact information |
| Labeling | F+ (Extremely Flammable), C (Corrosive), Xn (Harmful) hazard symbols; R12, R20/22, R34, R37 risk phrases |
| Parameter | Analysis Method |
|---|---|
| TMA Content | Gas Chromatography (GC) |
| Density | ASTM D4052 |
| Color | ASTM D1209 |
| Iron (Fe) | ICP-OES |
| Appearance | Visual Inspection |
A Certificate of Analysis (CoA) is issued for each batch.
Traceability is ensured by batch number.
Production and quality control activities are carried out in accordance with relevant quality management system principles.
| Property | Value |
|---|---|
| Product Name | Trimethylamine |
| Abbreviation | TMA |
| CAS No | 75-50-3 |
| EC No | 200-875-0 |
| UN No | 1083 (Anhydrous Trimethylamine) |
| Transport Class | Class 2.1 (Flammable Gas) |
| GHS Class | Flammable / Corrosive |
Question 1: In what form is trimethylamine supplied?
Answer: It is commercially available in anhydrous form or as 25%, 30%, 40%, 45% aqueous solutions.
Question 2: What are the main application areas of trimethylamine?
Answer: It is used in the production of quaternary ammonium compounds, organic synthesis, water treatment (cationic polymers), agricultural chemicals, pharmaceutical intermediates, surfactants and oil/gas applications.
Question 3: What should be considered during storage?
Answer: It should be stored in cool and well-ventilated areas, away from heat/sparks/open flames, separate from oxidizing agents, in tightly closed containers. The recommended storage temperature is 5–30 °C.
Question 4: What is the most important safety risk?
Answer: It is extremely flammable and its vapors may form explosive mixtures with air. It can also cause severe irritation to skin and eyes.
The information in this Technical Data Sheet is prepared to describe the typical properties of the product. The buyer is responsible for verifying the suitability of the product for its specific intended use and compliance with applicable legislation. Specifications may be updated without prior notice. Please contact the manufacturer/supplier for the current revision. Safety Data Sheet (SDS) is available upon request.