PRODUCT NAME: Dimethyl ether
Chemical formula is C2H6O
PHYSICAL PROPERTIES:
PH | 6.5 | Melting point(℃) | -141.5 |
Boiling point (℃) | -24.9 | Density | No date |
Relative vapor density (air =1) | 1.617 | Relative density (water =1) | 0.66 |
Combustion heat (kJ /mol) | 1453 | Saturated vapor pressure (kPa) | 533.2 (20℃) |
Critical pressure (MPa) | 5.33 | Critical temperature (°C) | 127 |
Flash point (° C) | - 41 ° C | The logarithm of the N-octanol /water partition coefficient | 0.1 |
Decomposition temperature | Not applicable | Spontaneous combustion temperature (C): | 235 |
Flammability | Very flammable | Solubility: | Soluble in water, alcohol, ether |
Lower explosion limit %(VN) | 3.4 | Explosion upper limit %(VN) | 27.0 |
Other physical and chemical properties | liquid material can not be ignored by thermal expansion. It's generally assumed that for every 1 degree rise in temperature, at constant volume. |
Main applications: as refrigerant, solvent, extraction agent, civil fuel and vehicle fuel, etc.
Stability: Stability.
Prohibited compounds: strong oxidant, strong acid, halogen.
Conditions to avoid: air, high heat, open flame.
Hazardous reaction: No data available
Hazardous decomposition products: usually considered at 400°C under the action of a catalyst decomposition into methane, ethane, formaldehyde.
Physical and chemical properties:
Colorless gas having an odor characteristic of ethers. Dimethyl ether is flammable gas. Mixed with air can form an explosive mixture. Contact with heat, Mars, flame or oxidizer easily combustible explosion. Potentially explosive peroxides can be produced by exposure to air or light. Gas is heavier than air, can be diffused to a considerable distance in a lower place, in case of fire source will catch fire and burn back. In case of high heat, pressure in the container increases, there is a risk of cracking and explosion. Soluble in water, gasoline, carbon tetrachloride, benzene, chlorobenzene, acetone and methyl acetate.
Emergency treatment of leakage:
Emergency treatment: quickly evacuate the personnel from the contaminated leakage area to the upwind place, and carry out isolation, and strictly restrict access. Cut off the fire. Emergency personnel are advised to wear self-contained positive pressure breathing apparatus and anti-static work clothes. Cut off the source of leakage as much as possible. Cover areas such as drains near the leak point with industrial cladding or adsorbent to prevent gas from entering. Reasonable ventilation to accelerate diffusion. The spray water is diluted and dissolved. Build embankments or dig pits to hold large quantities of waste water. Leakage containers should be properly handled, repaired and inspected before use.
Notes:
Closed operation, local exhaust air. Operators must be specially trained and strictly abide by the operating rules. Operators are recommended to wear self-priming filter gas masks (full cover), wear anti-static overalls, and wear rubber gloves. Keep away from fire and heat. No smoking in the workplace. Use explosion-proof ventilation systems and equipment. Prevent gas leakage into the workplace air. Avoid contact with acids, bases and alcohols. During transmission, cylinders and containers must be grounded and bonded to prevent static electricity. No bumping and shaking. Equip with the corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment.
Storage:
Store in a cool, ventilated warehouse. Keep away from fire and heat. Avoid light. The storage temperature should not exceed 30℃. Should be separated from acid, alkali, alcohol, food chemicals, avoid mixed storage. Explosion-proof lighting and ventilation facilities are adopted. Prohibit the use of mechanical equipment and tools that can easily produce sparks. The storage area should be equipped with leakage emergency treatment equipment.
