5-Ethyl-2-methylpyridine
CAS 104-90-5
EC 203-250-0
Formula C8H11N
MW 121.18 g/mol
Flavors & Fragrances Food & NutritionPersonal Care & Cosmetics Flavoring & AcidulantPreservation & BiocideCatalysis
Description
5-Ethyl-2-methylpyridine (CAS 104-90-5, EC 203-250-0) is an aromatic nitrogen heterocycle commercially known under the FEMA 3546 designation and the trade name Aldehydine. It carries no assigned E-code and is catalogued under HS code 29333990 for customs classification purposes.
In food and beverage formulation, it functions as a flavorant at low concentrations, contributing roasted and nutty top notes to savoury profiles. In personal care applications it acts as an antimicrobial agent, disrupting microbial cell membranes, and serves as a skin-conditioning ingredient in leave-on and rinse-off systems.
This material is supplied in liquid form and is available in technical and flavour-grade specifications aligned with FEMA and FCC standards. It is registered under REACH and handled in accordance with applicable EU chemical regulations. Standard packaging includes drums and intermediate bulk containers, with smaller quantities available on request.
In food and beverage formulation, it functions as a flavorant at low concentrations, contributing roasted and nutty top notes to savoury profiles. In personal care applications it acts as an antimicrobial agent, disrupting microbial cell membranes, and serves as a skin-conditioning ingredient in leave-on and rinse-off systems.
This material is supplied in liquid form and is available in technical and flavour-grade specifications aligned with FEMA and FCC standards. It is registered under REACH and handled in accordance with applicable EU chemical regulations. Standard packaging includes drums and intermediate bulk containers, with smaller quantities available on request.
Physical Properties
| Melting Point | -70.9 °C |
| Boiling Point | 177.8 °C @ Press: 747 Torr |
| Density | 0.9184 g/cm³ @ Temp: 23 °C |
| Flash Point | 151 °F |
| Appearance | 2-Methyl-5-ethyl pyridine is a colorless liquid with a sharp, aromatic odor. |
| Color | Colorless to Light orange to Yellow |
| Odor | at 0.10 % in propylene glycol. nutty strong raw potato roasted earthy |
| Form | clear liquid |
| Water Solubility | practically insoluble |
| Vapor Pressure | 1.853hPa at 20℃ |
| Refractive Index | n 20/D 1.497(lit.) |
| Log P | 2.1 at 22℃ |
Safety & Handling (Learn More)
Danger GHS05 GHS06 GHS07 GHS08
H
H227H302H311H314H315H317H318H319H331H336H361H371H402H412H311+H331
P
P203P210P260P261P262P264P270P271P272P273P280P316P317P318P319P321P330P363P403P405P501P264+P265P301+P317P302+P352P304+P340P308+P316P332+P317P333+P317P337+P317P361+P364P362+P364P370+P378P403+P233P301+P330+P331P302+P361+P354P305+P351+P338P305+P354+P338
Trade & Regulatory
| HS Code | 29333990 |
| UN Number | 2300 |
| ADR Class | 6.1 |
| Packing Group | III |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 3 |
Other Names
MEPAldehydine2,5-AldehydineAldehydecollidine5-Ethyl-2-picoline
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