Dichloromethane CAS#75-09-2
Excellent Solvent Compatibility: Miscible with most commonly used organic solvents, offering broad applicability in chemical processing and synthesis.
Versatile Dissolving Capability: Can be mixed with chlorinated solvents, ether, ethanol, and N,N-dimethylformamide in any proportion, providing exceptional formulation flexibility.
High Volatility for Efficient Processing: Its volatile nature facilitates rapid evaporation, making it suitable for extraction, cleaning, and industrial solvent applications.
Clear and Stable Liquid Form: Appears as a colorless, transparent liquid with consistent physical properties, enabling convenient handling and reliable performance in various industrial processes.
Product Description of Dichloromethane CAS#75-09-2
Dichloromethane (CH₂Cl₂) is a chlorinated hydrocarbon formed by replacing two hydrogen atoms in methane with chlorine atoms. It is a colorless, transparent, volatile liquid that is denser than water and possesses a mild ether-like odor and sweet taste. Although nonflammable under normal conditions, it may form explosive mixtures when combined with high concentrations of oxygen.
Dichloromethane is slightly soluble in water and exhibits excellent compatibility with most commonly used organic solvents. It is also completely miscible with chlorinated solvents, ether, ethanol, and N,N-dimethylformamide in all proportions, making it a versatile solvent for a wide range of industrial and chemical applications.
Parameters
| Melting point | -97 °C |
| Boiling point | 39.8-40 °C mm Hg(lit.) |
| density | 1.325 g/mL at 25 °C(lit.) |
| vapor density | 2.9 (vs air) |
| vapor pressure | 24.45 psi ( 55 °C) |
| refractive index | n20/D 1.424(lit.) |
| Fp | 39-40°C |
| storage temp. | room temp |
| solubility | Miscible in ethyl acetate, alcohol, hexanes, methanol, diethyl ether, n-octanol, acetone benzene, carbon tetrachloride, diethyl ether and chloroform. |
| form | Liquid |
| color | APHA: ≤10 |
| Specific Gravity | 1.329 (20/20℃) |
| Odor | Odor threshold 160 to 230 ppm |
| PH | 7 (20°C) |
| Odor Threshold | 160ppm |
| explosive limit | 13-22%(V) |
| Water Solubility | 20 g/L (20 ºC) |
| λmax | λ: 235 nm Amax: 1.00 |
| λ: 240 nm Amax: 0.20 | |
| λ: 250 nm Amax: 0.05 | |
| λ: 260 nm Amax: 0.02 | |
| λ: 340-400 nm Amax: 0.01 | |
| Merck | 146063 |
| BRN | 1730800 |
| Henry's Law Constant | 2.49 at 30 °C (headspace-GC, Sanz et al., 1997) |
| Dielectric constant | 9.1（20℃） |
| Exposure limits | TLV-TWA 50 ppm (～175 mg/m3) (ACGIH); carcinogenicity: Suspected Human Carcinogen (ACGIH), Animal Sufficient Evidence, Human Inadequate Evidence (IARC). |
| Stability: | Volatile |
| LogP | 1.25 |
| Surface tension | 26.5mN/m at 20°C |
| CAS DataBase Reference | 75-09-2(CAS DataBase Reference) |
| NIST Chemistry Reference | Methylene chloride(75-09-2) |
| IARC | 2A (Vol. Sup 7, 71, 110) 2017 |
| EPA Substance Registry System | Methylene chloride (75-09-2) |
| Absorption | in accordance |
Safety Information
| Hazard Codes | Xn,T,F,N,C |
| Risk Statements | 40-39/23/24/25-23/24/25-11-67-36/37/38-68/20/21/22-20/21/22-50-37-34 |
| Safety Statements | 23-24/25-36/37-45-16-7-26-61-36/37/39 |
| RIDADR | UN 1593 6.1/PG 3 |
| WGK Germany | 2 |
| RTECS | PA8050000 |
| F | 46091 |
| Autoignition Temperature | 556 °C |
| Hazard Note | Harmful |
| TSCA | Yes |
| HS Code | 2903 12 00 |
| HazardClass | 6.1 |
| PackingGroup | III |
| Hazardous Substances Data | 75-09-2(Hazardous Substances Data) |
| Toxicity | LD50 orally in young adult rats: 1.6 ml/kg (Kimura) |
| IDLA | 2,300 ppm |
Product Application of Dichloromethane CAS#75-09-2
Dichloromethane offers strong solvency and relatively low toxicity, making it widely used in industrial applications. It is commonly applied in the production of safety film and polycarbonate materials. It is also used as a coating solvent, metal degreasing agent, aerosol propellant, polyurethane foaming agent, mold release agent, and paint stripper.
In the pharmaceutical industry, dichloromethane serves as a reaction medium for the synthesis of antibiotics such as ampicillin, amoxicillin derivatives, and cephalosporins. In addition, it is used as a solvent in film production, a petroleum dewaxing solvent, an extraction solvent in organic synthesis, a foaming agent for polyurethane and other foamed plastics, and a metal cleaning agent.
