Ethoxyacetylene, ca 50% w/w in hexanes
|UN#:||UN1993||Hazard Class:||3||Packing Group:||II|
|Alternate Name:||Ethyl ethynyl ether|
Pricing and Availability
|Size||($) Price||Your Price||Quantity||Options||Availability|
|Boiling point:||55-56°||Refractive Index:||1.3800|
Supplied in solution to reduce polymerization. Quantities offered relate to gross weight of solution.
Undergoes [2+2] cycloaddition reactions with ketenes to give cyclobutenone derivatives: J. Org. Chem., 38, 1451 (1973).
Adds to carbonyl compounds in the presence of ZnBr2: Can. J. Chem., 54, 2310 (1976).
The Grignard reagent, prepared by exchange with ethyl magnesium bromide, adds to carbonyl compounds to give carbinols which rearrange in acid to ɑß-unsaturated acids. Alternatively, partial reduction of the adduct followed by hydrolysis provides a route to ɑß-unsaturated aldehydes: J. Chem. Soc., 1823 (1949); Rec. Trav. Chim., 82, 305 (1963):
Rearrangement by BF3 etherate leads directly to the ethyl ester: Rec. Trav. Chim., 78, 664 (1959); Chem. Lett., 1129 (1981); 241, 1271 (1982). See also Chloroacetaldehyde diethyl acetal, L07661.
Has been used as a mild dehydrating agent in peptide synthesis: Rec. Trav. Chim., 77, 1153 (1958), and for conversion of sensitive dicarboxylic acids to their anhydrides: J. Org. Chem., 33, 3808 (1968).
|Harmonized Tariff Code:||2909.19|
GHS Hazard and Precautionary Statements
Highly flammable liquid and vapour. May be fatal if swallowed and enters airways. Suspected of damaging fertility or the unborn child. May cause damage to organs through prolonged or repeated exposure. Causes skin irritation. May be harmful if swallowed. Toxic to aquatic life. Toxic to aquatic life with long lasting effects.
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Wear protective gloves/clothing. Use personal protective equipment as required. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Get immediate medical advice/attention. Store in a well-ventilated place. Keep cool.
Risk & Safety
|Flammable. Irritating to skin. Harmful:danger of serious damage to health by prolonged exposure through inhalation Possible risk of impaired fertility. Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. Harmful: May cause lung damage if swallowed.|
|Keep container in a well ventilated place. Keep away from sources of ignition - No Smoking. Do not empty into drains. Take precautionary measures against static discharges. Wear suitable protective clothing and gloves. Avoid release to the environment. Refer to special instructions/Safety data sheets If swallowed, do not induce vomiting: seek medical advice immediately & show this container or label.|