Molekula
Pyrrolidine
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
Pyrrolidine is a heterocyclic organic compound used as a building block in pharmaceuticals, agrochemicals, and specialty chemicals. It functions as a catalyst, solvent, and intermediate in synthesis. It is also used to make rubber vulcanization accelerators and as a curing agent for epoxy resins, including in plastic composites manufacturing. Available in 98% purity, it has a molecular weight of 71.12 g/mol, a CAS number of 123-75-1, and is stored at ambient temperature. It is classified as a hazardous substance with a signal word of Danger. Molekula supplies Pyrrolidine 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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500 g — £80.90 per pack ex VAT · £97.08 inc. VAT
Need a different quantity or pack?
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 | Clear colourless to yellow liquid |
| Water | ≤0.20% |
| Colour | ≤50 APHA |
| Assay (GC) | ≥99% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 3 °C |
| Transport Class | 3 (8) |
| Packing Group | II |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless to pale yellow liq |
| Odour | Unpleasant, ammoniacal odor |
| Melting Point | -57.79 °C |
| Boiling Point | 86.56 °C |
| Density | 0.85 (relative, water = 1) |
| Water Solubility | 1000 g/L (miscible) at 20 °C |
| Solubility (other solvents) | Soluble in ethanol, ethyl ether; slightly soluble in benzene, chloroform |
| Vapour Pressure | 1.8 kPa at 39 °C |
| Refractive Index | 1.4402 |
| pKa | pKa = 11.3 |
| log P (octanol/water) | 0.46 |
Source: PubChem CID 31268 (HSDB, ICSC, ChEMBL)
Identification
| Property | Value |
|---|---|
| SKU | 28445426 |
| CAS Number | 123-75-1 |
| IUPAC Name | pyrrolidine |
| EC Number | 204-648-7 |
| Molecular Formula | C4H9N |
| Molecular Weight | 71.12 |
| Exact Mass | 71.0735 |
| SMILES | C1CCNC1 |
| InChIKey | RWRDLPDLKQPQOW-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H9N/c1-2-4-5-3-1/h5H,1-4H2 |
| PubChem CID | 31268 |
| UN Number | UN1922 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| Tariff Code | 29339980 |
Safety & GHS
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Flammable
GHS02
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Corrosive
GHS05
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Health Hazard
GHS07
Hazard statements
- H225 Highly flammable liquid and vapour
- H302 Harmful if swallowed
- H314 (sub cat. 1A) Causes severe skin burns and eye damage
- H332 Harmful if inhaled
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- 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, 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
- 1-Azacyclopentane
- Azacyclopentane
- Azolidine
- Butylenimine
- Perhydropyrrole
- Prolamine
- Pyrrole, tetrahydro-
- Pyrrolidine ring
- Tetrahydropyrrole
- Tetramethylenimine
Frequently asked questions
What is pyrrolidine used for?
Pyrrolidine is used as a building block in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals.
What is the chemical formula and molecular weight of pyrrolidine?
The chemical formula is C4H9N and the molecular weight is 71.12 g/mol.
How should pyrrolidine be stored?
Pyrrolidine should be stored at ambient temperature, away from moisture and incompatible materials.
What grade of pyrrolidine does Molekula supply?
Molekula supplies pyrrolidine in technical grade; custom grades are available upon request.
Can Molekula supply pyrrolidine in bulk?
Yes, Molekula can supply pyrrolidine in bulk quantities; please contact sales for details.
What documentation comes with a pyrrolidine order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.