• Name

  Methyl propiolate

• EINECS 213-083-5
• CAS No. 922-67-8
• Article Data36
• CAS DataBase
• Density 1.028 g/cm³
• Solubility Not miscible in water.
• Melting Point 171-173 °C
• Formula C₄H₄O₂
• Boiling Point 104 °C at 760 mmHg
• Molecular Weight 84.0746
• Flash Point 10 °C
• Transport Information UN 3272 3/PG 2
• Appearance colourless to light yellow liquid
• Safety 26-36-36/37/39-23-16-33-7/9
• Risk Codes 11-36/37/38-36
• Molecular Structure
• Hazard Symbols F, Xi
• 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;
• PSA 26.30000
• LogP -0.20740

METHYL PROPIOLATE Chemical Properties

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 cm³ 
Molar Volume: 81.8 cm³ 
Polarizability: 8 10^-24 cm³ 
Surface Tension: 32.2 dyne/cm 
Density: 1.027 g/cm³ 
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;

METHYL PROPIOLATE Toxicity Data With Reference

METHYL PROPIOLATE 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