Molekula
4,4'-Dipyridyl
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
4,4'-Dipyridyl is an organic compound belonging to the pyridine family, widely used as a ligand in coordination chemistry, a reagent in organic synthesis, and a building block for pharmaceuticals and polymers. It is also employed as a bridging linker in the construction of coordination polymers and metal-organic frameworks (MOFs) and as a precursor in the production of dyes and agrochemicals. This chemical has a CAS number of 553-26-4, a molecular formula of C10H8N2, and a molecular weight of 156.18 g/mol. It is stored at ambient conditions and carries a signal word of "Danger" due to its hazardous properties.
Molekula supplies 4,4'-Dipyridyl at ≥99% purity in 25 g and 100 g packs, from £44.76 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 5 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 — £37.30 per pack ex VAT · £44.76 inc. VAT
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100 g — £107.40 per pack ex VAT · £128.88 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 crystalline powder |
| Melting Point | 109°C - 113°C |
| Water | ≤ 5% |
| Assay | ≥99% |
| Residue on Ignition | ≤ 0.8% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Vapour Pressure | 0.0000556 mmHg |
Source: PubChem CID 11107 (Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 25579154 |
| CAS Number | 553-26-4 |
| IUPAC Name | 4-pyridin-4-ylpyridine |
| EC Number | 209-036-3 |
| Molecular Formula | C10H8N2 |
| Molecular Weight | 156.18 |
| Exact Mass | 156.0687 |
| SMILES | C1=CN=CC=C1C2=CC=NC=C2 |
| InChIKey | MWVTWFVJZLCBMC-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H8N2/c1-5-11-6-2-9(1)10-3-7-12-8-4-10/h1-8H |
| PubChem CID | 11107 |
| UN Number | UN2811 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29333992 |
| Tariff Code | 2933399990 |
Safety & GHS
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Toxic
GHS06
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Hazardous to the Environment
GHS09
Hazard statements
- H301 Toxic if swallowed
- H311 Toxic in contact with skin
- H411 Toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P501 Dispose of contents/container to an approved waste disposal plant
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.
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
- 4-(4-Pyridyl)pyridine
- 4-pyridin-4-ylpyridine
- 4,4-Bipyridin
- 4,4'-Bipyridine
- 4,4'-Bipyridyl
- 4,4'-bpy
- 4,4'-Dipyridine
- 4,4'-Dipyridyl hydrate
- gamma,gamma'-Bipyridyl
- gamma,gamma'-Dipyridyl
Frequently asked questions
What is 4,4'-dipyridyl commonly used for?
4,4'-Dipyridyl is primarily used as a ligand in coordination chemistry, a reagent in organic synthesis, and in the preparation of metal complexes for catalytic applications.
What is the chemical formula and molecular weight of 4,4'-dipyridyl?
The chemical formula is C10H8N2, and the molecular weight is 156.18 g/mol.
What safety classification does 4,4'-dipyridyl fall under?
The product is classified with the signal word 'Danger' due to its hazardous properties.
How should 4,4'-dipyridyl be stored?
Store at ambient temperature in a tightly sealed container, away from moisture and incompatible substances.
Does Molekula supply 4,4'-dipyridyl in bulk quantities?
Yes, Molekula can supply 4,4'-dipyridyl in bulk, with quantities tailored to your requirements—please contact us for details.
What documentation is provided with an order of 4,4'-dipyridyl?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Where can I buy 4,4'-Dipyridyl?
Directly from Molekula, which lists 4,4'-Dipyridyl in 25 g and 100 g packs from £44.76 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 4,4'-Dipyridyl dangerous goods for shipping?
Yes. 4,4'-Dipyridyl ships as dangerous goods: UN2811, class 6.1, packing group III.
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.