Molecule structure of Methyl propyl ether (CAS NO.557-17-5) :

IUPAC Name: 1-methoxypropane 
Molecular Weight: 74.1216 g/mol
Molecular Formula: C₄H₁₀O
Density: 0.734 g/cm³ 
Boiling Point: 40.1 °C at 760 mmHg 
Index of Refraction: 1.36
Molar Refractivity: 22.32 cm³
Molar Volume: 100.9 cm³
Polarizability: 8.85×10^-24 cm³
Surface Tension: 19 dyne/cm 
Enthalpy of Vaporization: 26.75 kJ/mol 
log P (octanol-water): 1.21 
Water Solubility: 3.05E+04 mg/L 
Vapor Pressure: 465 mm Hg 
Henry's Law Constant: 1.49E-03 atm-m³/mole 
Atmospheric OH Rate Constant: 1.13E-11 cm³/molecule-sec
XLogP3: 1.2
H-Bond Acceptor: 1
Rotatable Bond Count: 2
Exact Mass: 74.073165
MonoIsotopic Mass; 74.073165
Topological Polar Surface Area: 9.2
Heavy Atom Count: 5
Complexity: 13.1
Canonical SMILES: CCCOC
InChI: InChI=1S/C4H10O/c1-3-4-5-2/h3-4H2,1-2H3
InChIKey: VNKYTQGIUYNRMY-UHFFFAOYSA-N
EINECS: 209-158-7

 Methyl propyl ether (CAS NO.557-17-5) is an ether once used as a general anaesthetic. It is also used as an alternative to diethyl ether because of its greater potency. Its use as an anaesthetic has since been supplanted by modern halogenated ethers which are much less flammable. Methyl propyl ether (CAS NO.557-17-5) also can be used as a solvent and to make other chemicals.

A poison by inhalation. A flammable liquid. When heated to decomposition it emits acrid smoke and irritating vapors.
Risk Statements: 11 
R11:Highly flammable.
Safety Statements: 16-33
S16:Keep away from sources of ignition. 
S33:Take precautionary measures against static discharges.
RIDADR: 2612
RTECS: KO2280000
HazardClass: 3.1
PackingGroup: II

DOT Classification:  3; Label: Flammable Liquid

 Methyl propyl ether (CAS NO.557-17-5) is also called 1-Methoxypropane ; Methyl n-propyl ether ; Metopryl
Neothyl ; alpha-Methoxy propane ; Propane, 1-methoxy- ; Propane, 1-methoxy- (9CI) . Methyl propyl ether (CAS NO.557-17-5) is a colorless volatile liquid with an ether-like odor. It is less dense than water and insoluble in water. Vapors heavier than air. May be narcotic by inhalation in high concentrations. Methyl propyl ether (CAS NO.557-17-5) is highly flammable. Oxidizes readily in air to form unstable peroxides that may explode spontaneously. A mixture of liquid air and diethyl ether exploded spontaneously. Ethers, such as Methyl propyl ether (CAS NO.557-17-5) , can act as bases. They form salts with strong acids and addition complexes with Lewis acids. The complex between diethyl ether and boron trifluoride is an example. Ethers may react violently with strong oxidizing agents. In other reactions, which typically involve the breaking of the carbon-oxygen bond, ethers are relatively inert. Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control may cause pollution. Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated.