Overview
DMA and DMAC refer to the same chemical (N,N-Dimethylacetamide CAS 127-19-5) in many industrial documents, while DMF (N,N-Dimethylformamide CAS 68-12-2) is a different solvent with distinct properties and applications. Both are polar aprotic solvents, but they differ in performance: DMAC generally offers better thermal stability and is preferred in high-temperature polymer and fiber processing, while DMF is more commonly used in lower-temperature reactions and as a general-purpose solvent.
The choice between them depends on your process conditions, regulatory constraints, and required product performance.
What are the difference between DMAC and DMF?
Here's a clear, detailed comparison of Dimethylacetamide (DMAC), DMA, and DMF (Dimethylformamide) to help you understand the differences.
| Name | Abbreviation | CAS Number | Molecular Formula | Structure |
|---|---|---|---|---|
| Dimethylacetamide | DMAC | 127-19-5 | C4H9NO | CH3-C(=O)-N(CH3)2 |
| Dimethylacetamide (alternate abbreviation) | DMA | 127-19-5 | C4H9NO | CH3-C(=O)-N(CH3)2 |
| Dimethylformamide | DMF | 68-12-2 | C3H7NO | H-C(=O)-N(CH3)2 |
Physical Properties
| Property | DMAC/DMA | DMF |
|---|---|---|
| Boiling Point | 164 °C | 153 °C |
| Melting Point | -20 °C | -61 °C |
| Density | 0.937 g/cm³ | 0.944 g/cm³ |
| Solubility in Water | Miscible | Miscible |
| Odor | Slightly amine-like | Slightly amine-like |
Related Products
N,N-Dimethylacetamide CAS 127-19-5 Industrial Grade Solvent
Abbreviation: DMAc/DMA
CAS No.: 127-19-5
Grade: Industrial Grade
Appearance: Colorless liquid
N,N-Dimethylformamide DMF Chemical Solvent CAS 68-12-2
Synonyms: Dimethyl formamide; Formyldimethylamine; DMF
Molecular Formula: C3H7NO
Molecular Weight: 73.09
CAS Number: 68-12-2
Advantages and Disadvantages of DMAC and DMF
Dimethylformamide CAS 68-12-2
Advantages: It is usually more affordable, offers excellent solubility, and has a lower boiling point which can be advantageous in certain processes.
Disadvantages: Poor stability, easy decomposition into dimethylamine and formic acid, and higher flammability compared to DMAc.
Typical Uses: Serves as a solvent for polyvinyl chloride, polyurethane, and is widely applied in organic synthesis reactions.
Dimethylacetamide CAS 127-19-5
Advantages: Superior stability, lower volatility, higher boiling point, and greater safety for applications involving high temperatures.
Disadvantages: It is often more expensive than DMF, which may limit its use in cost-sensitive scenarios.
Typical Uses: Acts as a solvent for acrylic fiber spinning and polyimide synthesis, and is also used in the pharmaceutical industry.
Key Differences for Industrial Buyers
Chemical Stability
One of the biggest differences is thermal and chemical stability.
Dimethylacetamide generally provides better stability during high-temperature processing, reducing the risk of solvent degradation and helping maintain consistent product quality. DMF is more prone to decomposition under harsh processing conditions, which may affect sensitive manufacturing processes.
For manufacturers seeking long production cycles or stable batch quality, dimethylacetamide DMAC is often the preferred option.
Solvent Performance
Both solvents dissolve a wide range of polymers and organic compounds.
DMAC is commonly selected for:
- Polyimide (PI)
- Polyurethane (PU)
- Acrylic fiber production
- Pharmaceutical intermediates
- Electronic chemicals
DMF is widely used for:
- PVC processing
- Synthetic leather
- Organic synthesis
- Polyurethane systems
- Adhesives and coatings
The final choice depends on the compatibility requirements of your production process.
For detailed selection and supply needs, send your inquiry to GNEE BIO for professional support.
Processing Temperature
Because DMAC has a higher boiling point (164°C), it performs better in manufacturing processes requiring elevated temperatures or slower evaporation.
DMF, with its lower boiling point, is often selected when faster solvent removal is beneficial.
Cost Considerations
Dimethylformamide is generally less expensive and may be suitable for cost-sensitive applications.
Dimethylacetamide usually commands a higher price but can offer advantages through:
- Improved process stability
- Better production consistency
- Reduced solvent degradation
- Lower risk of unexpected process interruptions
Many manufacturers evaluate total production efficiency rather than purchase price alone when selecting a solvent.
Which Solvent Should You Choose?
| Use | Recommended Solvent |
| High-temperature processing | DMAC |
| Better chemical stability | DMAC |
| Pharmaceutical manufacturing | DMAC |
| Polyimide production | DMAC |
| Lower purchase cost | DMF |
| General organic synthesis | DMF |
| Faster solvent evaporation | DMF |
- There is no universal "better" solvent. The best choice depends on your process requirements, quality standards, and production objectives.
As a professional DMAC/DMF supplier, we provide industrial and pharmaceutical grade Dimethylacetamide with stable quality, bulk supply capability and full export documentation.
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Frequently Asked Questions
Q1. Should I choose DMAC or DMF for polymer processing?
A: The choice depends on your processing conditions. DMAC is generally preferred for high-performance polymers, polyimide, acrylic fiber spinning, and applications requiring higher thermal stability. DMF is commonly selected for general polymer processing, PVC, polyurethane, and applications where cost efficiency is a priority.
Q2. Why is DMAC more expensive than DMF? Is it worth the extra cost?
A: CAS 127-19-5 Dimethylacetamide solvent typically has a higher purchase cost because it offers advantages such as:
- Higher boiling point (164°C)
- Better thermal stability
- Lower risk of solvent degradation
- More consistent performance in demanding applications
For manufacturers where process stability and product quality are critical, DMAC solvent may provide better overall production value.
Q3. Can DMAC replace DMF directly in production process?
A: Not always. Although DMAC and DMF have similar solvent properties, they have different boiling points, evaporation rates, and process behaviors. A technical evaluation or small-scale trial is recommended before full replacement.
Q4. What Dimethylacetamide DMAC purity should I purchase for industrial applications?
A: Most industrial buyers select DMAC with 99.5%–99.9% purity, while pharmaceutical, electronic, and high-performance material applications may require higher purity grades.
about us
GNEE BIO is a professional supplier of chemical raw materials serving customers worldwide. We specialize in supplying high-quality industrial solvents and chemical intermediates for pharmaceutical, polymer, coating, electronics, and manufacturing industries.
Our products comply with international quality standards, including ISO, REACH, and RoHS requirements where applicable. Supported by a reliable supply chain, rigorous quality management, and extensive export experience, we provide consistent product quality, flexible packaging solutions, and dependable global delivery for bulk chemical procurement.
Our advantages include:
- High-purity DMAC with consistent batch quality
- Comprehensive quality documentation, including COA, TDS, and SDS
- Flexible packaging options such as steel drums, IBC tanks, and ISO tanks
- Reliable inventory and bulk supply capability
- Professional export documentation and international shipping support
- Responsive technical and commercial assistance for global buyers
With years of experience in international chemical supply, we help customers source reliable raw materials while ensuring stable quality and efficient delivery.
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