N,N-Dimethylformamide CAS 68-12-2 DMF, N,N-Dimethylformamide, CAS 68-12-2 DMF
DMF (CAS 68-12-2), as a multifunctional solvent and chemical parent, has both core values and risks:Irreplaceable solubility: Its dissolving power for polymers such as polyurethane and acrylonitrile is unrivaled.
68-12-2
C3H7NO
73.09
200-679-5
| CAS | 68-12-2 |
| Molecular formula | C3H7NO |
| Molecular weight | 73.09 |
| EIENCS | 200-679-5 |
| Form | Powder |
| Melting point | -61 °C |
| boling point | 153 °C |
| Density | 0.944 g/mL |
| Solubility | water: miscible |
| PKA | -0.44±0.70(Predicted) |
| Color | APHA: ≤15 |
| Storage temp | Store at +5°C to +30°C. |
DMF (CAS 68-12-2), as a multifunctional solvent and chemical parent, has both core values and risks:
Irreplaceable solubility: Its dissolving power for polymers such as polyurethane and acrylonitrile is unrivaled.
Prominent safety bottleneck: Hepatotoxicity + Group 2A carcinogen, strict protection is required;
Green process upgrade: Dominated by the dimethylamine-carbon monoxide method, promoting dual improvements in production capacity and environmental protection.
Industrial solvents (accounting for 70% of global demand)
Polymer materials
Polyurethane synthesis: Washing and curing agent in wet synthetic leather production.
Synthetic fiber: Special solvent for wet spinning of polyacrylonitrile (acrylic fiber), with a dissolving capacity of over 500 g/L.
Electronic industry
Circuit board cleaning agent, tin-plated component quenching liquid, with an ion residue removal efficiency of over 99%.
2. Chemical separation and purification
Butadiene/isoprene recovery: Selective extraction from C4 / C5 fractions, purity increased to 99.5%.
Separation of isophthalic acid and terephthalic acid: Utilizing the difference in solubility (the solubility of isophthalic acid is greater than that of terephthalic acid).
3. Synthesis of pharmaceuticals and pesticides
Pharmaceutical intermediates: synthetic vitamin B₆, cortisone, sulfonamides and anticancer drugs (such as methoxylethalil).
Insecticide production: The core raw material for manufacturing acetamidine.
4. Other functional applications
Paint stripper: Efficiently dissolves epoxy resin and polyurethane coatings.
Analytical Chemistry: Liquid chromatography solvents, non-aqueous titration reagents.
Health hazard
Acute toxicity: Oral LD₅₀=4000 mg/kg in rats (moderate toxicity); Inhalation of high-concentration vapor causes respiratory tract irritation and liver damage (jaundice, transaminase ↑).
Chronic effects: Long-term exposure leads to neurasthenia syndrome and hepatomegaly. IARC classifies it as a Group 2A possible human carcinogen.
Skin contact: Causes blisters and burning pain, permeability > 10 μg/cm²/h (immediate rinsing is required).
Environmental risk
Aquatic toxicity: LC₅₀=1430 mg/L (for blackhead fish, 96 hours), prohibited in areas near water sources.
Biodegradability: Half-life of 22 hours (in air), but difficult to degrade in water.
Operation and Storage
Protective requirements: Nitrile gloves + gas mask + goggles. Concentration in the working area ≤20 mg/m³ (Chinese standard).
Fire extinguishing agents: Mist water, alcohol-resistant foam (direct running water is prohibited).
Storage conditions: Cool and well-ventilated (≤37℃), away from oxidants/halogens.
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