Ethoxyethyne Property

Boiling point:

53°C

Density 

0.732 g/mL at 25 °C

refractive index 

n20/D 1.379

Flash point:

−20 °F

storage temp. 

2-8°C

form 

liquid

color 

Clear Yellow

Water Solubility 

Slightly miscible with water.

BRN 

741882

Exposure limits

ACGIH: TWA 50 ppm (Skin)
OSHA: TWA 500 ppm(1800 mg/m3)
NIOSH: IDLH 1100 ppm; TWA 50 ppm(180 mg/m3)

Dielectric constant

8.0500000000000007

CAS DataBase Reference

927-80-0(CAS DataBase Reference)

NIST Chemistry Reference

Ethoxyacetylene(927-80-0)

Safety

Hazard Codes 

F,Xn,N

Risk Statements 

11-38-48/20-51/53-62-65-67-36/37/38-36/38

Safety Statements 

16-36/37-61-62-45-36/37/39-26-33-29-9

RIDADR 

UN 1993 3/PG 2

WGK Germany 

3

RTECS 

KN9900000

Hazard Note 

Highly Flammable/Keep Cold

HazardClass 

3

PackingGroup 

II

HS Code 

29091990

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H304May be fatal if swallowed and enters airways

H315Causes skin irritation

H336May cause drowsiness or dizziness

H361Suspected of damaging fertility or the unborn child

H373May cause damage to organs through prolonged or repeated exposure

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P202Do not handle until all safety precautions have been read and understood.

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P273Avoid release to the environment.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P331Do NOT induce vomiting.

Ethoxyethyne Chemical Properties,Usage,Production

Chemical Properties

Clear orange to brown solution

Uses

Ethoxyacetylene is used in Arens-van Dorp synthesis to prepare propargyl alcohol via reaction with ketone. In organic synthesis, it undergoes [2+2] cycloaddition reactions with ketenes to give cyclobutenone derivatives. It is also used to prepare alpha, beta-unsaturated esters from ketones by following Meyer-Schuster rearrangement.Used with N-vinylamides and triflic anhydride in a direct, three-component synthesis of pyridines. Also used to prepare α, β-unsaturated esters from ketones via a Meyer-Schuster rearrangement.

Uses

Used with N-vinylamides and triflic anhydride in a direct, three-component synthesis of pyridines. Also used to prepare α,β-unsaturated esters from ketones via a Meyer-Schuster rearrangement.