Molekula
Pyridine 99.5%
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
Pyridine 99.5% is a basic, heterocyclic organic compound with a distinctive aromatic odor, widely used as a solvent, intermediate in pharmaceuticals, agrochemicals, and rubber production. It also serves in chemical synthesis, dye manufacturing, and as a corrosion inhibitor. This high-purity reagent meets strict quality standards with a CAS number of 110-86-1, molecular formula C5H5N, and molecular weight of 79.10 g/mol. Store at ambient conditions in a well-ventilated area, as it carries a **Danger** signal word due to its flammability and toxicity. Molekula supplies Pyridine 99.5% 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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 |
|---|---|
| Water | ≤0.1% |
| Colour | ≤10 Hazen (APHA) |
| Assay | ≥99.5% |
| Residue | ≤0.002% |
| Total Impurities (spec. and unspec.) | ≤0.05% |
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 | 90030473 |
| 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
-
Flammable
GHS02
-
Health Hazard
GHS07
-
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
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
- 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 (99.5%) commonly used for?
Pyridine is primarily used as a solvent, intermediate in pharmaceutical synthesis, and in the production of pesticides, dyes, and rubber chemicals.
What is the chemical formula and molecular weight of pyridine?
The chemical formula is **C₅H₅N**, and the molecular weight is **79.10 g/mol**.
How should pyridine (99.5%) be stored?
Store in a tightly sealed container at **ambient temperature**, away from heat, sparks, and open flames.
What purity grade is available for pyridine from Molekula?
Molekula supplies pyridine at **99.5% purity** as standard.
Can Molekula supply pyridine in bulk quantities?
Yes, bulk quantities of pyridine (99.5%) are available upon request—contact us for pricing and logistics details.
What documentation comes with a pyridine order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
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.