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Send EmailDimethylacetamide, Dimethyl Acetamide, DMAc, 127-19-5
| Property | Detail |
|---|---|
| Chemical Name | Dimethylacetamide |
| English Name | Dimethylacetamide |
| Abbreviation | DMAc |
| Chemical Formula | C₄H₉NO |
| CAS No | 127-19-5 |
| EC No | 204-826-4 |
| Molecular Weight | 87.12 g/mol |
| Appearance | Colorless, clear liquid |
| Odor | Slight amine-like |
| Grade | Technical / Industrial |
Dimethylacetamide (DMAc) is a highly polar, colorless and hygroscopic aprotic solvent. It is widely used in resin, polymer, synthetic fiber, film coating and pharmaceutical production processes. It provides high performance in dissolving numerous organic and inorganic substances.
| Property | Value |
|---|---|
| Appearance | Colorless, clear liquid |
| Odor | Slight amine-like |
| Chemical Formula | C₄H₉NO |
| CAS No | 127-19-5 |
| Molecular Weight | 87.12 g/mol |
| Boiling Point | 165–166 °C |
| Melting Point | -20 °C |
| Density (20°C) | 0.936–0.942 g/cm³ |
| Flash Point | 63–70 °C |
| Refractive Index (20°C) | 1.437–1.439 |
| Water Solubility | Completely miscible |
| Vapor Pressure (20°C) | Approx. 2 mmHg |
The values indicated are typical physical properties.
| Parameter | Specification |
|---|---|
| DMAc Purity | ≥ 99.8% |
| Water (H₂O) | ≤ 0.05% |
| Color (APHA) | ≤ 10 |
| Acidity (as Acetic Acid) | ≤ 0.003% |
| Dimethylamine | ≤ 0.01% |
| Appearance | Clear, particle-free liquid |
| Parameter | Specification |
|---|---|
| DMAc Purity | ≥ 99.8% |
| Water (H₂O) | ≤ 0.05% |
| Color (APHA) | ≤ 10 |
| Acidity (as Acetic Acid) | ≤ 0.003% |
| Dimethylamine | ≤ 0.01% |
| Water Solubility | Completely miscible |
| Property | Value |
|---|---|
| Physical State | Liquid |
| Color | Colorless, clear |
| Odor | Slight amine-like |
| Boiling Point | 165–166 °C |
| Melting Point | -20 °C |
| Density (20°C) | 0.936–0.942 g/cm³ |
| Flash Point | 63–70 °C |
| Refractive Index (20°C) | 1.437–1.439 |
| Vapor Pressure (20°C) | Approx. 2 mmHg |
| Sector | Use |
|---|---|
| Fiber Industry | Acrylic fiber production, elastane (spandex) production, technical textile applications |
| Resin and Polymer Production | Polyurethane resins, polyamide and polyimide systems, specialty polymer synthesis |
| Pharmaceutical Industry | Pharmaceutical reaction solvent, active ingredient production, intermediate synthesis |
| Film and Coating Systems | Protective coatings, industrial films, membrane production |
| Chemical Industry | Organic synthesis solvent, reaction medium, specialty chemical production |
| Packaging Type | Net Weight |
|---|---|
| Steel drum | 200 kg |
| IBC | 1000 kg |
| ISO Tank | Bulk shipment |
| Bulk tanker | Bulk shipment |
Store in cool, dry and well-ventilated areas.
Due to its hygroscopic nature, containers must be kept tightly closed.
Keep away from strong oxidizing agents.
Protect from direct sunlight.
Recommended Storage Temperature: 5–35 °C
Under suitable storage conditions: 24 months
May cause eye and skin irritation.
Prolonged or repeated exposure may pose a health risk.
Avoid intense inhalation of vapors.
Chemical-resistant gloves
Protective goggles
Protective work clothing
Appropriate respiratory protection in case of insufficient ventilation
| 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 | Flammable liquid (flash point 63–70 °C) |
| Suitable Extinguishing Media | Water spray, foam, dry chemical, CO₂ |
| Specific Hazards | Toxic gases (NOₓ, CO) may be 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 upon combustion |
| Polymerization | Does not polymerize |
| Reactivity | Reacts with strong oxidizing agents |
Strong oxidizing agents
Strong acids and bases
Moisture
Direct sunlight
| Information | Value |
|---|---|
| Transport Class | Flammable liquid (to be checked according to applicable legislation) |
| UN Number | UN 1279 (Dimethylacetamide) |
| Packing Group | III |
| Transport Conditions | Transport in closed, well-ventilated vehicles; keep away from ignition sources; protect from moisture |
| Subject | Statement |
|---|---|
| Intended Use | Industrial use (fiber, resin/polymer, pharmaceutical, film/coating, chemical) |
| Food Contact | Not suitable for direct food contact |
| REACH | Subject to applicable legislation; consult the SDS for exact information |
| Labeling | Xn (Harmful), Xi (Irritant) hazard symbols; R20/21, R36 risk phrases |
| Parameter | Analysis Method |
|---|---|
| Purity Determination | Gas Chromatography (GC) |
| Water Determination | Karl Fischer |
| Color | APHA |
| Density | ASTM D4052 |
| 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 | Dimethylacetamide |
| Abbreviation | DMAc |
| CAS No | 127-19-5 |
| EC No | 204-826-4 |
| Chemical Formula | C₄H₉NO |
| Physical Form | Liquid |
| Purity | ≥ 99.8% |
| Application Areas | Fiber, resin and pharmaceutical solvent |
Question 1: In what form is dimethylacetamide supplied?
Answer: It is supplied as a colorless, clear liquid; it is shipped in 200 kg steel drums, 1000 kg IBCs, ISO tanks and bulk tankers.
Question 2: What are the main application areas of DMAc?
Answer: It is used in acrylic and elastane fiber production, polyurethane/polyamide/polyimide resin and polymer synthesis, as a pharmaceutical reaction solvent, in film/coating systems and as an organic synthesis solvent.
Question 3: What should be considered during storage?
Answer: It should be stored in cool, dry and well-ventilated areas, protected from moisture, away from strong oxidizing agents, in tightly closed containers. The recommended temperature is 5–35 °C.
Question 4: What is the most important safety risk?
Answer: It may cause eye and skin irritation, prolonged or repeated exposure may pose a health risk, and intense inhalation of vapors should be avoided.
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.