Molekula
Imidazole
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
Imidazole is a heterocyclic organic compound used as a catalyst, stabilizer, and intermediate in the synthesis of pharmaceuticals, agrochemicals, and specialty chemicals. It appears as a white to pale yellow crystalline solid with a sharp odor. CAS: 288-32-4, Molecular Formula: C3H4N2, Molecular Weight: 68.08 g/mol, Storage: Ambient, Signal Word: Danger. Molekula supplies Imidazole 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.
Often bought together
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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100 g — £22.50 per pack ex VAT · £27.00 inc. VAT
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500 g — £35.00 per pack ex VAT · £42.00 inc. VAT
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2.5 kg — £91.80 per pack ex VAT · £110.16 inc. VAT
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5 kg — £148.00 per pack ex VAT · £177.60 inc. VAT
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25 kg — £674.00 per pack ex VAT · £808.80 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 | White crystalline powder |
| Melting Point | 87 - 91 °C |
| Water | ≤ 0.2% |
| Identification | Conforms to reference |
| Assay (GC) | ≥99.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 145 °C |
| Transport Class | 8 |
| Packing Group | III |
| Acidity | Base |
For research use only. Not for human use.
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless crystals |
| Odour | Amine-like odor |
| Melting Point | 90.5 °C |
| Boiling Point | 257 °C |
| Density | 1.03 (relative, water = 1) |
| Water Solubility | 663 g/L at 20 °C |
| Solubility (other solvents) | Very soluble in ethanol; soluble in diethyl ether, acetone, pyridine; slightly soluble in benzene |
| Vapour Pressure | 0.3 Pa at 20 °C |
| Refractive Index | 1.4801 |
| pKa | pKa = 6.95 (at 25 °C) |
| log P (octanol/water) | -0.08 |
Source: PubChem CID 795 (HSDB, DrugBank, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 21611083 |
| CAS Number | 288-32-4 |
| IUPAC Name | 1H-imidazole |
| EC Number | 206-019-2 |
| Molecular Formula | C3H4N2 |
| Molecular Weight | 68.08 |
| Exact Mass | 68.0374 |
| SMILES | C1=CN=CN1 |
| InChIKey | RAXXELZNTBOGNW-UHFFFAOYSA-N |
| InChI | InChI=1S/C3H4N2/c1-2-5-3-4-1/h1-3H,(H,4,5) |
| PubChem CID | 795 |
| UN Number | UN3263 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2933296000 |
| Tariff Code | 2933299090 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H314 (sub cat. 1C) Causes severe skin burns and eye damage
- H360D May harm the unborn child
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- 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
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Hungarian, Italian, Spanish, Swedish.
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
- 1,3-Diaza-2,4-cyclopentadiene
- 1,3-Diazole
- 1H-Imidazole
- Glyoxalin
- Glyoxaline
- Imidazol
- Iminazole
- Imutex
- Miazole
- Pyrro(b)monazole
Frequently asked questions
What is imidazole used for?
Imidazole is commonly used as a catalyst in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals.
What is the chemical formula and molecular weight of imidazole?
The chemical formula is C3H4N2 and the molecular weight is 68.08 g/mol.
How should imidazole be stored?
Imidazole should be stored at ambient temperature, away from moisture and incompatible materials.
What grade of imidazole does Molekula supply?
Molekula supplies imidazole in reagent grade, suitable for laboratory and industrial applications.
Can Molekula supply imidazole in bulk?
Yes, Molekula can supply imidazole in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with an imidazole 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.