Methyl propiolate
Methyl propiolate
CAS: 922-67-8
Molecular Formula: C4H4O2
Methyl propiolate - Names and Identifiers
| Name | Methyl propiolate |
| Synonyms | Methyl propiolate METHYL PROPYNOATE METHYL PROPIOLATE methyl prop-2-ynoate Methyl acetylenecarboxylate PROPIOLIC ACID METHYL ESTER METHYL ACETYLENECARBOXYLATE Propiolic acid methyl ester PROPYNOIC ACID, METHYL ESTER PROPARGYLIC ACID METHYL ESTER acetylenecarboxylicacidmethylester Acetylenecarboxylic acid methyl ester Methyl propiolate, (Propiolic acid methyl ester) |
| CAS | 922-67-8 |
| EINECS | 213-083-5 |
| InChI | InChI=1/C4H4O2/c1-3-4(5)6-2/h1H,2H3 |
| InChIKey | IMAKHNTVDGLIRY-UHFFFAOYSA-N |
Methyl propiolate - Physico-chemical Properties
| Molecular Formula | C4H4O2 |
| Molar Mass | 84.07 |
| Density | 0.945 g/mL at 25 °C (lit.) |
| Melting Point | 171-173 °C |
| Boling Point | 103-105 °C (lit.) |
| Flash Point | 50°F |
| Water Solubility | Not miscible in water. |
| Vapor Presure | 31.438mmHg at 25°C |
| Appearance | Liquid |
| Specific Gravity | 0.9450 |
| Color | Clear colorless |
| BRN | 605462 |
| Storage Condition | Inert atmosphere,2-8°C |
| Stability | Stable. Highly flammable. Incompatible with strong oxidizing agents, bases, acids. |
| Refractive Index | n20/D 1.408(lit.) |
| MDL | MFCD00008572 |
| Use | N-3 protective reagent, suitable for uridine and thymidine. |
Methyl propiolate - Risk and Safety
| Risk Codes | R11 - Highly Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. R36 - Irritating to the eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S23 - Do not breathe vapour. S16 - Keep away from sources of ignition. S33 - Take precautionary measures against static discharges. S7/9 - |
| UN IDs | UN 3272 3/PG 2 |
| WGK Germany | 3 |
| RTECS | UE0050000 |
| FLUKA BRAND F CODES | 19 |
| HS Code | 29161980 |
| Hazard Note | Highly Flammable/Harmful |
| Hazard Class | 3 |
| Packing Group | II |
Methyl propiolate - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| Use | as a N-3 protective agent for uridine and thymidine; For Ph3P-promoted 1,2,3, one-pot four-component synthesis of 5-benzenetetracarboxylate |
| production method | 1. Method: To a reaction flask equipped with a stirrer and a reflux condenser was added 14g(0.2mol) of propiolic acid (2) and 50ml of a 10% methanolic sulfuric acid solution. The reaction was refluxed with stirring for 45H. A portion of the ethanol was distilled off. After cooling, wash with saturated sodium chloride solution for three times, then wash with 5% sodium carbonate solvent until weak alkaline, wash with water, dry with anhydrous sodium sulfate, distillation, collect 95~104 ℃ fraction, methyl propiolate (1) was obtained in a yield of 38%. [1] |
Last Update：2024-04-10 22:29:15
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View History
Methyl propiolate
碲化锗
4E1RCat
ULTRAMARK 443
F-14329
SULPHON YELLOW RS-CF
FEMA 3222
ANS-NH4+
4-BIPHENYLAMINE
Iridium
碲化锗
4E1RCat
ULTRAMARK 443
F-14329
SULPHON YELLOW RS-CF
FEMA 3222
ANS-NH4+
4-BIPHENYLAMINE
Iridium