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6921-27-3

Basic Information
CAS No.: 6921-27-3
Name: DIPROPARGYL ETHER
Article Data: 27
Molecular Structure:
Molecular Structure of 6921-27-3 (DIPROPARGYL ETHER)
Formula: C6H6 O
Molecular Weight: 94.113
Synonyms: 2-Propynylether (6CI,7CI,8CI); 3-[(Prop-2-ynyl)oxy]propyne; 4-Oxa-1,6-heptadiyne;Bis(2-propynyl) ether; Dipropargyl ether; Dipropargyl oxide; Propargyl ether
Density: 0.914 g/mL at 25 °C(lit.)
Boiling Point: 55-57 °C65 mm Hg(lit.)
Flash Point: 75 °F
Hazard Symbols: Xn,Xi
Risk Codes: 10-19-22
Safety: Poison by ingestion. Forms thermally unstable explosive peroxides in air. When heated to decomposition it emits acrid smoke and irritating fumes. See also ACETYLENE COMPOUNDS and ALKYNES and ETHERS.
PSA: 9.23000
LogP: 0.26940
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Chemistry

IUPAC Name: 3-Prop-2-ynoxyprop-1-yne
Synonyms of 2-Propynyl ether (CAS NO.6921-27-3) : 1-Propyne, 3,3'-oxybis- ; 2-Propynyl ether ; Dipropargyl ether ; Propargyl ether
CAS NO: 6921-27-3
Molecular Formula:C6H6O
Molecular Weight :94.11
Molecular Structure :
Index of Refraction: 1.449 
Surface Tension: 35.9 dyne/cm 
Density: 0.927 g/cm3 
Flash Point: 14.1 °C 
Enthalpy of Vaporization: 34.08 kJ/mol 
Boiling Point: 117.3 °C at 760 mmHg 
Vapour Pressure: 20.9 mmHg at 25°C 

Uses

 2-Propynyl ether (CAS NO.6921-27-3) is used as intermediate in organic synthesis .

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
dog LD50 oral 913mg/kg (913mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
GASTROINTESTINAL: NAUSEA OR VOMITING
LIVER: "HEPATITIS, FIBROUS (CIRRHOSIS, POST-NECROTIC SCARRING)"
Federation Proceedings, Federation of American Societies for Experimental Biology. Vol. 19, Pg. 389, 1960.
rabbit LD50 oral 168mg/kg (168mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
BEHAVIORAL: FOOD INTAKE (ANIMAL)
LIVER: "HEPATITIS, FIBROUS (CIRRHOSIS, POST-NECROTIC SCARRING)"
Federation Proceedings, Federation of American Societies for Experimental Biology. Vol. 19, Pg. 389, 1960.
rat LD50 oral 539mg/kg (539mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
BEHAVIORAL: FOOD INTAKE (ANIMAL)
LIVER: "HEPATITIS, FIBROUS (CIRRHOSIS, POST-NECROTIC SCARRING)"
Federation Proceedings, Federation of American Societies for Experimental Biology. Vol. 19, Pg. 389, 1960.

Safety Profile

Poison by ingestion. Forms thermally unstable explosive peroxides in air. When heated to decomposition it emits acrid smoke and irritating fumes. See also ACETYLENE COMPOUNDS and ALKYNES and ETHERS.
Hazard CodesHarmfulXn,Xi
Risk Statements 10-19-22
R10:Flammable. 
R19: 2-Propynyl ether (CAS NO.6921-27-3) may form explosive peroxides. 
R22:Harmful if swallowed.
Safety Statements 16-36
S16:Keep away from sources of ignition. 
S36:Wear suitable protective clothing.
RIDADR UN 3271 3/PG 3
WGK Germany 3
RTECS UK5950000
Hazard Note Irritant
HazardClass 3.1
PackingGroup II