Molekula
Pyridine 99.9%
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
Pyridine 99.9% is a heterocyclic aromatic compound used as a solvent, catalyst, and intermediate in the synthesis of pharmaceuticals, agrochemicals, and dyes. It is a colorless to pale yellow liquid with a strong, unpleasant odor. CAS: 110-86-1, Molecular Formula: C5H5N, Molecular Weight: 79.10 g/mol, Storage: Ambient, Signal Word: Danger. Molekula supplies Pyridine 99.9% 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
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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100 mL — £45.00 per pack ex VAT · £54.00 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.
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Specifications
| Property | Value |
|---|---|
| Appearance | Clear colourless to pale yellow liquid, free from suspended matter |
| Colour (Pt-Co) | ≤ 20 H.U |
| Chlorides | ≤ 0.001% |
| Evaporation Residue | ≤ 0.01% |
| Assay (GC) | ≥ 99.9% |
| Solubility in water | Clear solution no turbidity or oil film |
| Reducing Substances | (Permanganate colour persists for min. 30 mins) TO PASS TEST |
| Water (KF) | ≤ 0.1% |
| Copper (Cu) | ≤ 0.0005% |
| Sulphates (SO4)(2-) | ≤ 0.001% |
| Distillation range at 760 mm Hg | First drop to dry point 1°C (Including 115.3 ± 0°C) |
| Ammonia (NH3) | ≤ 0.002% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 17 °C |
| Transport Class | 3 |
| Packing Group | II |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless to yellow liquid. |
| Odour | Sharp, nauseating |
| Melting Point | -42 °C |
| Boiling Point | 115 °C |
| Density | 0.98 (relative, water = 1) |
| Vapour Pressure | 2 kPa at 20 °C |
| Refractive Index | 1.50920 |
| pKa | pKa = 5.23 |
| log P (octanol/water) | 0.65 |
Source: PubChem CID 1049 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90033417 |
| CAS Number | 110-86-1 |
| IUPAC Name | pyridine |
| EC Number | 203-809-9 |
| Molecular Formula | C5H5N |
| Molecular Weight | 79.10 |
| Exact Mass | 79.0422 |
| SMILES | C1=CC=NC=C1 |
| InChIKey | JUJWROOIHBZHMG-UHFFFAOYSA-N |
| InChI | InChI=1S/C5H5N/c1-2-4-6-5-3-1/h1-5H |
| PubChem CID | 1049 |
| UN Number | UN1282 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2933310000 |
| Tariff Code | 2933310000 |
Safety & GHS
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Flammable
GHS02
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H225 Highly flammable liquid and vapour
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H351 Suspected of causing cancer
- H370 Causes damage to organs
- H372 Causes damage to organs through prolonged or repeated exposure
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P231 Handle under inert gas
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- 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.
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
- Azabenzene
- Azine
- CP 32
- FEMA No. 2966
- FEMA Number 2966
- Piridina
- Pirydyna
- Pyridin
- pyridine ion (1-), hydrogen
- RCRA waste number U196
Frequently asked questions
What is Pyridine 99.9% used for?
Pyridine 99.9% is commonly used as a solvent and intermediate in the synthesis of pharmaceuticals, agrochemicals, and dyes.
What is the chemical formula and molecular weight of Pyridine 99.9%?
The formula is C5H5N and the molecular weight is 79.10 g/mol.
How should Pyridine 99.9% be stored?
It should be stored at ambient temperature, away from heat and ignition sources.
What grade of Pyridine 99.9% is available?
Molekula supplies Pyridine 99.9% as a high-purity grade suitable for laboratory and industrial applications.
Can Molekula supply Pyridine 99.9% in bulk?
Yes, Molekula can supply Pyridine 99.9% in bulk quantities—please contact sales for pricing and availability.
What documentation comes with a Pyridine 99.9% 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.