Basic information
- Name:
2-Propynoicacid, methyl ester
- Superlist Name:
- Methyl propiolate
- CAS No.:
922-67-8
- Molecular Structure:

- Formula:
- C4H4O2
- Molecular Weight:
- 84.08
- 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
- Boiling Point:
- 104 °C at 760 mmHg
- Flash Point:
- 10 °C
- Appearance:
- colourless to light yellow liquid
- Hazard Symbols:
F,
Xi- Risk Codes:
- 11-36/37/38-36
- Safety Description:
- 26-36-36/37/39-23-16-33-7/9 Details
- Transport Information:
- UN 3272 3/PG 2
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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 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;
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;
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
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

