1.0Msolutioninmethanol,SpcSeal , 115-10-6

Synonym(s):
DME;Methyl ether

CAS NO.：115-10-6

Empirical Formula: C2H6O

Molecular Weight: 46.07

MDL number: MFCD00008494

EINECS: 204-065-8

PRODUCT Properties

• Melting point: −141 °C(lit.)
• Boiling point: −24.8 °C(lit.)
• Density: 1.617
• vapor density: 1.62 (vs air)
• vapor pressure: >760 mm Hg ( 25 °C)
• refractive index: 1.2984
• Flash point: -41°C
• solubility: Soluble in acetone, chloroform, ethanol (95%), ether, and 1 in 3 parts of water. Dimethyl ether is generally miscible with water, nonpolar materials, and some semipolar materials. For pharmaceutical aerosols, ethanol (95%) is the most useful cosolvent. Glycols, oils, and other similar materials exhibit varying degrees of miscibility with dimethyl ether.
• Odor: Chloroform-like; sweet.
• explosive limit: 27%
• Odor Threshold: 500ppm
• Water Solubility: soluble
• Merck: 6071
• BRN: 1730743
• Dielectric constant: 5.0（25℃）
• Stability: Stable. Extremely flammable. Note low flash point. May form explosive mixtures with air. May form peroxides during prolonged storage.
• LogP: 0.07 at 25℃

Description and Uses

Dimethyl ether is a colorless compressed liquefied gas or liquid. Molecular weight= 46.08; Boilingpoint= 224℃; Freezing/Melting point = 2 141℃; Vaporpressure = 5200 hPa at 20℃; Flash point = flammable gas(241℃); Autoignition temperature= 350℃. Explosivelimits: LEL = 3.4%; UEL= 27.0%. Hazard Identification(based on NFPA-704 M Rating System): Health 2,Flammability 4, Reactivity 1. Soluble in water.

Methyl ether is used as an aerosol propellantand in refrigeration.

Safety

• Symbol(GHS): GHS02,GHS04
• Signal word: Danger
• Hazard statements: H220-H280
• Precautionary statements: P210-P377-P381-P410+P403
• Hazard Codes: F+
• Risk Statements: 12
• Safety Statements: 9-16-33
• RIDADR: UN 1033 2.1
• WGK Germany: 1
• RTECS: PM4780000
• F: 4.5-31
• Autoignition Temperature: 662 °F
• HazardClass: 2.1
• HS Code: 2909199090