Description
Basic information of Dimethyl Ether ( DME
):
Name : Dimethyl ether
Abbreviations: DME
Molecular formular: CH2OCH6
Purity:*9.9%**9.*9%
CAS number : *******6
UN number : ***3
Main application:
1 aerosol propellant: used as a propellant gas in aerosols, such as
polyurethane foam sealant, aerosol pesticide, spray paint, air
fresher ,blowing agent ,cosmetic industry ,fragrance ,hair spray
ect.
2 refrigerant : substitute for CFCs, no damage to the ozone
layer
3 automotive fuel : substitute for diesel and gasoline
4 domestic fuel : substitute for LPG
5 chemical feedstock: a chemical intermediate ,solvent ,extraction
agent
6 cutting gas for welding cutting and brazing
Physics and chemical properties of dimethyl ether dme:
PH value: **7
Appearance : Colourless gas
odor: Peculiar to ethers
Melting point( °C ) :**1.5
Relative density (water=1): 0.**1 (*0/4°C)
Boiling point (°C ) :*4.9
Vapor density ( kg/m3 ): 1.****1.**8 (**8.*6k,1 atm)
Saturated vapor pressure(kPa): **3.2 (*0 °C)
Heat of combustion (kJ/mol): ***5
Critical temperature (°C ): **8.8
Critical pressure (MPa): 5.*3
Octanol-water partition coefficients: 0.1
Flash point (°C ): *1.4 ( open up )
Upper explosive limit%(V/V): *6.7
Autoignition temperature (°C ): **0
Lower explosive limit%(V/V): 3.5
solubility: Good solubility, can soluble in water, alcohol, diethyl
ether
Other chemical and physical properties: Inert, non-corrosiveness,
burns with a slightly bright flame
stability: Stable
incompatibility: Strong oxidizer, strong acid, halogen
Conditions should be avoided: Open flame, high temperature
Hazard of polymerization: Non-polymerization
Decomposition product : CO, CO2
Executive standard: HG/T ********7
