Molekula
N,N'-Carbonyldiimidazole (CDI)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
N,N'-Carbonyldiimidazole (CDI) is a versatile heterocyclic reagent widely used in organic synthesis, particularly for activating carboxyl groups in peptide coupling, esterification, and carbamate formation. It acts as a mild dehydrating agent and facilitates efficient bond formation in pharmaceuticals, agrochemicals, and materials science. CAS 530-62-1, molecular formula (C3H3N2)2CO, molecular weight 162.15. Store at ambient conditions. Signal word: Danger.
Molekula supplies N,N'-Carbonyldiimidazole (CDI) at ⩾ 98.0% purity in 25 g and 100 g packs, from £37.08 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 9 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
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 — £30.90 per pack ex VAT · £37.08 inc. VAT
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100 g — £108.90 per pack ex VAT · £130.68 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 to off-white powder |
| Melting Point | 115 - 122°C |
| Purity | ⩾ 98.0% |
| Water (KF) | ≤ 0.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 25890016 |
| CAS Number | 530-62-1 |
| IUPAC Name | di(imidazol-1-yl)methanone |
| EC Number | 208-488-9 |
| Molecular Formula | (C3H3N2)2CO |
| Molecular Weight | 162.15 |
| Exact Mass | 162.0542 |
| SMILES | C1=CN(C=N1)C(=O)N2C=CN=C2 |
| InChIKey | PFKFTWBEEFSNDU-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H6N4O/c12-7(10-3-1-8-5-10)11-4-2-9-6-11/h1-6H |
| PubChem CID | 68263 |
| UN Number | UN3263 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29332990 |
| Tariff Code | 2933299090 |
Safety & GHS
-
Corrosive
GHS05
-
Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H314 (sub cat. 1B) 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
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- 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, Russian, Slovak, Slovenian, 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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1-(1H-imidazole-1-carbonyl)-1H-imidazole
- 1,1'-Carbonylbis-1H-imidazole
- 1,1'-Carbonyldiimidazole
- 1H-Imidazole, 1,1'-carbonylbis-
- Carbonyl diimidazole
- CDI Crosslinker
- di(1H-imidazol-1-yl)methanone
- di(imidazol-1-yl)methanone
- Diimidazol-1-yl ketone
- N,N'-Carbonyldiimidazole
Frequently asked questions
What is N,N'-Carbonyldiimidazole (CDI) commonly used for?
CDI is primarily used as a coupling reagent in organic synthesis, particularly for activating carboxylic acids in peptide synthesis, esterification, and the preparation of imidazolides.
What is the chemical formula and molecular weight of CDI?
The formula is (C₃H₃N₂)₂CO and the molecular weight is 162.15 g/mol.
What safety classification does CDI have, and how should it be handled?
CDI is labeled with the signal word 'Danger' due to its hazardous properties; handle in a fume hood with proper PPE, avoiding skin/eye contact and inhalation.
What grades of CDI does Molekula supply, and is it available in bulk?
Molekula supplies CDI with a specified purity of ⩾ 98.0%; bulk quantities are available upon request—please contact us for pricing and minimum order quantities (MOQs).
How should CDI be stored, and what is its shelf life?
Store CDI in a dry, tightly sealed container at ambient temperature, away from moisture and light; shelf life is typically 12–24 months under proper conditions.
What documentation is provided with a CDI order from Molekula?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet detailing purity and quality control.
Where can I buy N,N'-Carbonyldiimidazole (CDI)?
Directly from Molekula, which lists N,N'-Carbonyldiimidazole (CDI) in 25 g and 100 g packs from £37.08 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Is N,N'-Carbonyldiimidazole (CDI) dangerous goods for shipping?
Yes. N,N'-Carbonyldiimidazole (CDI) ships as dangerous goods: UN3263, class 8, packing group II.
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.