【CAS】68-12-2
Alias: DMF, N,N-Dimethylmethanamide, Formic acid dimethylamide
Chemical formula: C3H7NO
Molecular weight:73.09
【Structural Formula】
1. Product Property
DMF is a clear, colorless, hygroscopic liquid with a faint amine-like odor. It is a highly polar aprotic solvent, completely miscible with water and most organic solvents. DMF has a high boiling point (153°C), low volatility, and a wide liquid range, making it an excellent solvent for a broad range of organic and inorganic compounds. It is stable under normal conditions but can decompose at temperatures above 350°C. DMF is also known for its strong solvency power and is widely used in chemical synthesis and industrial applications
2. Quality Standards
| Parameter | Specification |
| Purity (%) | ≥ 99.8 |
| Water content (ppm) | ≤ 300 |
| Color (APHA) | ≤ 10 |
| Dimethylamine (ppm) | ≤ 10 |
| Formic acid (ppm) | ≤ 3 |
| Methanol (ppm) | ≤ 100 |
| Conductivity (20°C, μS/cm) | ≤ 2.5 |
| pH (20% solution, 25°C) | 6.5–8.5 |
| Appearance | Clear, colorless liquid |
3. Application Scope and Usage
DMF is widely used as a solvent in the production of acrylic fibers, polyurethane coatings, and synthetic leather. It serves as a reaction medium and crystallization solvent in the pharmaceutical industry due to its excellent solvency and stability. DMF is also employed in the purification of acetylene and butadiene, and in the separation of aromatics from aliphatic hydrocarbons in petrochemical processes. Additionally, it is used in the electronics industry for cleaning and in the production of high-voltage capacitors
4. Package and Storage
DMF should be stored in tightly sealed containers made of stainless steel or aluminum to prevent moisture absorption. It is hygroscopic and should be kept under a dry nitrogen atmosphere. Suitable sealing materials include PTFE, polyethylene, or high-density polypropylene. DMF is typically supplied in steel drums (180–190 kg), IBC containers (900 kg), or bulk tankers. It should be stored in a cool, dry, well-ventilated area away from oxidizing agents, halogens, and strong acids.
