Molekula
Methyl propiolate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Methyl propiolate is a reactive alpha,beta-unsaturated ester used in organic synthesis, particularly in Diels-Alder reactions and as a building block in pharmaceutical and agrochemical research. It is a clear, colorless to pale yellow liquid with a pungent odor. CAS: 922-67-8, Molecular Formula: C4H4O2, Molecular Weight: 84.07 g/mol. Store at 2 to 8 °C. Hazardous: Signal word Danger. Molekula supplies Methyl propiolate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £77.70 per pack ex VAT · £93.24 inc. VAT
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless to light yellow liquid |
| Identification | Conforms to reference |
| Specific Gravity | 1.006-1.012 |
| Purity | ≥97.0% |
| Identification (IR) | Conforms to structure |
| Refractive Index (n20/D) | 1.407-1.41 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Flash Point | 16 °C |
| Transport Class | 3 |
| Packing Group | II |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90029176 |
| CAS Number | 922-67-8 |
| IUPAC Name | methyl prop-2-ynoate |
| EC Number | 213-083-5 |
| Molecular Formula | C4H4O2 |
| Molecular Weight | 84.07 |
| Exact Mass | 84.0211 |
| SMILES | COC(=O)C#C |
| InChIKey | IMAKHNTVDGLIRY-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H4O2/c1-3-4(5)6-2/h1H,2H3 |
| PubChem CID | 13536 |
| UN Number | UN3272 |
| REACH Code | Y110 |
| HTS Code | 29161950 |
| Tariff Code | 2916199590 |
Safety & GHS
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Flammable
GHS02
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Health Hazard
GHS07
Hazard statements
- H225 Highly flammable liquid and vapour
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P240 Ground/bond container and receiving equipment
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (CARBOMETHOXY)ACETYLENE
- (METHOXYCARBONYL)ACETYLENE
- IMAKHNTVDGLIRY-UHFFFAOYSA-N
- methyl 2-propynoate
- methyl acetylenemonocarboxylate
- methyl propargylate
- Methyl propynoate
- Propiolic acid, methyl ester
- Propynoic acid methyl ester
Frequently asked questions
What is methyl propiolate used for?
Methyl propiolate is primarily used as a synthetic intermediate in organic chemistry, particularly in the synthesis of heterocyclic compounds and pharmaceuticals.
What is the chemical formula and molecular weight of methyl propiolate?
The chemical formula is C4H4O2 and the molecular weight is 84.07 g/mol.
How should methyl propiolate be stored?
Methyl propiolate should be stored at temperatures between 2 to 8 °C and protected from light and moisture.
What grade of methyl propiolate is available?
Molekula supplies methyl propiolate in technical grade; custom grades may be available upon request.
Can Molekula supply methyl propiolate in bulk?
Yes, Molekula can supply methyl propiolate in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with a methyl propiolate order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.