Pyridine
CAS 110-86-1
EC 203-809-9
Formula C5H5N
MW 58.08 g/mol
Heterocyclic Compounds Food & NutritionPersonal Care & CosmeticsPharmaceuticals & HealthcareHome Care & Industrial Cleaning Flavoring & AcidulantCatalysisPreservation & Biocide
Description
Pyridine (CAS 110-86-1, EC 203-809-9, formula C5H5N) is a basic heterocyclic organic compound also known under the trade designations CP 32, A 57147, and Azine. It carries no assigned E-code. It is classified under HS code 29333100 and falls within the Flavors and Fragrances category.
In food and pharmaceutical manufacturing, pyridine functions as a flavorant by contributing characteristic roasted and meaty taste profiles at trace concentrations. In personal care formulations it acts as a skin conditioner, while its antimicrobial activity makes it effective as a preservation agent against bacteria and fungi. It also serves as a catalyst and ligand in chemical synthesis processes.
Pyridine is available in technical and high-purity grades, with pharmaceutical-grade material conforming to Ph.Eur. specifications. It is subject to REACH registration requirements within the EU. Standard packaging includes drums and IBC containers, with documentation available to support FCC and regulatory compliance needs.
In food and pharmaceutical manufacturing, pyridine functions as a flavorant by contributing characteristic roasted and meaty taste profiles at trace concentrations. In personal care formulations it acts as a skin conditioner, while its antimicrobial activity makes it effective as a preservation agent against bacteria and fungi. It also serves as a catalyst and ligand in chemical synthesis processes.
Pyridine is available in technical and high-purity grades, with pharmaceutical-grade material conforming to Ph.Eur. specifications. It is subject to REACH registration requirements within the EU. Standard packaging includes drums and IBC containers, with documentation available to support FCC and regulatory compliance needs.
Physical Properties
| Melting Point | -41.6 °C |
| Boiling Point | 115.2-115.3 °C |
| Density | 0.98272 g/cm³ @ Temp: 20 °C |
| Flash Point | 68 °F |
| Appearance | Pyridine is a colorless liquid. Nauseating, sickening fish-like odor. The Odor Threshold is 0.17 ppm. |
| Color | colorless |
| Odor | Nauseating odor detectable at 0.23 to 1.9 ppm (mean = 0.66 ppm) |
| Form | Liquid |
| Water Solubility | Miscible |
| Vapor Pressure | 23.8 mm Hg ( 25 °C) |
| Refractive Index | n 20/D 1.509(lit.) |
| pH | 8.81 (H2O, 20℃) |
| Log P | 0.64 at 20℃ |
Safety & Handling (Learn More)
Danger GHS02 GHS07 GHS05 GHS08 GHS09 GHS06
H
H225H302H304H311H312H314H315H318H319H332H335H336H351H361H370H372H373H400H410
P
P203P210P233P240P241P242P243P260P261P262P264P270P271P273P280P316P317P318P319P321P330P331P363P391P405P501P264+P265P301+P316P301+P317P302+P352P304+P340P308+P316P332+P317P337+P317P361+P364P362+P364P370+P378P403+P233P403+P235P301+P330+P331P302+P361+P354P303+P361+P353P305+P351+P338P305+P354+P338
Trade & Regulatory
| HS Code | 29333100 |
| UN Number | 1282 |
| ADR Class | 3 |
| Packing Group | II |
| Storage Class | 3 - Flammable liquids |
| WGK (Germany) | 2 |
Other Names
pyridinpiridinaCP 32AzineA 57147Azabenzene2-PROPENOL2-Propen-1-c
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