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922-67-8

Basic Information
CAS No.: 922-67-8
Name: Methyl propiolate
Article Data: 36
Molecular Structure:
Molecular Structure of 922-67-8 (Methyl propiolate)
Formula: C4H4O2
Molecular Weight: 84.0746
Synonyms: Propiolicacid, methyl ester (6CI,7CI,8CI);(Carbomethoxy)acetylene;(Methoxycarbonyl)acetylene;Methyl 2-propynoate;Methyl acetylenecarboxylate;Methyl acetylenemonocarboxylate;Methyl ethynecarboxylate;Methyl propargylate;Methyl propynoate;NSC 154164;Propynoic acid methyl ester;
EINECS: 213-083-5
Density: 1.028 g/cm3
Melting Point: 171-173 °C
Boiling Point: 104 °C at 760 mmHg
Flash Point: 10 °C
Solubility: Not miscible in water.
Appearance: colourless to light yellow liquid
Hazard Symbols: FlammableF, IrritantXi
Risk Codes: 11-36/37/38-36
Safety: 26-36-36/37/39-23-16-33-7/9
Transport Information: UN 3272 3/PG 2
PSA: 26.30000
LogP: -0.20740
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    Name Methyl propiolate Synonyms 2-Propynoic acid methyl ester; Methyl acetylenecarboxylate CAS NO. 922-67-8 Molecular Formula C4H4O2

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Chemistry

The Molecular formula of METHYL PROPIOLATE(922-67-8): C4H4O2
The Molecular Weight of METHYL PROPIOLATE(922-67-8): 84.07
The Molecular Structure of METHYL PROPIOLATE(922-67-8):
EINECS: 213-083-5
Boiling Point: 104 °C at 760 mmHg 
Flash Point: 10 °C 
Index of Refraction: 1.408 
Molar Refractivity: 20.18 cm
Molar Volume: 81.8 cm3 
Polarizability: 8 10-24 cm3 
Surface Tension: 32.2 dyne/cm 
Density: 1.027 g/cm
Enthalpy of Vaporization: 34.31 kJ/mol 
Vapour Pressure: 31.4 mmHg at 25°C 
storage temp.: Refrigerator (+4°C) + Flammables area
BRN: 605462
Stability: Stable. Highly flammable. Incompatible with strong oxidizing agents, bases, acids.
Appearance: colourless to light yellow liquid
IUPAC Name: methyl prop-2-ynoate
Synonyms: METHYL ACETYLENECARBOXYLATE;2-propynoic acid methyl ester;PROPYNOIC ACID, METHYL ESTER;Acetylenecarboxylic acid methyl ester;PROPARGYLIC ACID METHYL ESTER;PROPIOLIC ACID METHYL ESTER;METHYL PROPIOLATE;METHYL PROPYNOATE;

Toxicity Data With Reference

The Toxicity Information of  METHYL PROPIOLATE(922-67-8):
1.   

ivn-mus LD50:18 mg/kg

   CSLNX*    U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) NX#08364 .

Safety Profile

Poison by intravenous route. Octakis(trifluorophosphine)rhodium catalyzes the violent polymerization of methyl propiolate. When heated to decomposition it emits acrid smoke and irritating fumes.
The Hazard Codes of METHYL PROPIOLATE(922-67-8):  F,  Xi
Hazard Note: Highly Flammable/Harmful
HazardClass: 3
The Risk Statements information of METHYL PROPIOLATE(922-67-8):
11:  Highly Flammable 
36:  Irritating to the eyes 
36/37/38:  Irritating to eyes, respiratory system and skin 
The Safety Statements information of METHYL PROPIOLATE(922-67-8):
16:  Keep away from sources of ignition - No smoking 
23:  Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) 
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
33:  Take precautionary measures against static discharges 
36:  Wear suitable protective clothing 
7/9:  Keep container tightly closed and in a well-ventilated place 
36/37/39:  Wear suitable protective clothing, gloves and eye/face protection 
RIDADR: UN 3272 3/PG 2
WGK Germany: 3
RTECS: UE0050000
F: 19
PackingGroup: II
HS Code: 29161980