PU Foaming Raw Material CAS No. 75-09-2 Mc Dichloromethane Liquid Methylene Chloride

                Dichloromethane (DCM), also known as dichloroalkane, methyl chloroform, is a colorless organic compound with an ether-like pungent odor. Its chemical formula is CH2Cl2. This compound is formed by replacing two hydrogen atoms in methane (CH4) with chlorine atoms. It is slightly soluble in water, soluble in ethanol and ether. Under normal conditions of use, it is a non-flammable low-boiling point solvent. Its vapor will only produce a weakly burning mixed gas when it reaches a high concentration in high-temperature air . It is often used to replace flammable petroleum ether, ether, etc.. It has good solubility and is widely used in industrial fields, such as industrial solvents, intermediates and coolants. It also has important uses in pharmaceutical preparation, laboratories and the pharmaceutical industry.

Name:                                                      Dichloromethane (DCM)
Other names:                                         methylene chloride
Chemical formula:                                CH2Cl2
Molecular weight:                                 84.933
CAS registration number:                      75-09-2
EINECS registration number:                 200-838-9
Melting point:                                      -97 °C
Boiling point:                                       39.8 °C
Water soluble:                                      slightly soluble
Density:                                              1.325 g/cm³
Appearance:                                        colorless, transparent, volatile liquid
Flash point:                                         -14.1 °C (no flash point at room temperature and pressure)
Safety description:                               S7; S16; S23; S24/25; S36/37; S45
Hazard symbol:                                   Xn
Hazard description:                            R40
UN dangerous goods number:            1593

Melting point:                          -97℃
Boiling point:                           39.8℃
Density:                                  1.325g/cm3
Saturated vapor pressure:         46.5kPa (20℃)
Critical temperature:                237℃
Critical pressure:                      6.08MPa
Ignition temperature:               556℃
Upper explosion limit (V/V):      22%
Lower explosion limit (V/V):      14%
Appearance:                           Colorless transparent liquid with aromatic odor
Solubility:                               Slightly soluble in water, soluble in ethanol and ether

Physical properties
                           State, color and smell: At room temperature and pressure, dichloromethane is a colorless, transparent liquid with an ether-like smell and sweetness. This smell and state can help people identify it preliminarily in experiments or practical applications.
                            Melting point and boiling point: Its melting point is around - 97°C and its boiling point is 39.75°C (760 mmHg). The low boiling point makes dichloromethane easy to volatilize at room temperature, which needs to be considered in many application scenarios, such as its volatilization loss during extraction.
                           Density: The relative density is 1.325 g/cm³ (20°C), which is heavier than water. Therefore, when it is mixed with water, it sinks to the lower layer, which is of great significance in operations such as separation and purification.
                           Solubility: Dichloromethane has a low solubility in water, but it can be quickly dissolved in many organic solvents, such as phenol, aldehydes, ketones, glacial acetic acid, ethyl acetoacetate and cyclohexylamine, and can be completely miscible with other chlorinated solvents, ether and ethanol in any proportion. It can also form binary azeotropic mixtures with water and some organic solvents, which is an important property in chemical separation processes.
                            Steam characteristics: Its vapor density is 2.9 (relative to air), its vapor pressure is high, and it is easy to form steam, which means that it is easy to produce flammable or toxic vapors during storage and use, and ventilation should be paid attention to.