5-ethyl-2-methylpyridine

CAS Number
104-90-5
EC Number
203-250-0
Chemical Formula
C8H11N
Molecular Weight
121.18 g/mol
FEMA Number
FEMA 3546
Abbreviation
MEP

Description

5-Ethyl-2-methylpyridine (CAS 104-90-5), commercially known as 5-ethyl-2-picoline or MEP, is a pyridine-base intermediate used as a building block in the synthesis of vitamins, agrochemicals, and pharmaceutical compounds. It also carries FEMA 3546 status, recognizing its role as a flavoring agent in food applications. MEP is a primary raw material in the industrial production of nicotinic acid and nicotinamide.

In these processes, it undergoes catalytic oxidation at scale. In agrochemical manufacturing, it serves as a precursor to active ingredients in herbicide and pesticide formulations for global distribution. Food and beverage producers use it as a flavoring agent to impart roasted, nutty, or popcorn-like notes in processed products at permitted use levels. It is highly valued for its specific profile.

Fragrance formulators incorporate it into compositions targeting savory or tobacco-adjacent scent profiles. 5-Ethyl-2-picoline is supplied as a liquid, typically in drums or ISO tank containers for bulk orders. Technical grade is the standard commercial specification, with purity levels commonly at 98% or higher by GC. Food-grade material meeting FEMA compliance is available for flavor and fragrance applications.

These materials are produced to meet rigorous quality standards for industrial use. Our logistics network ensures that all shipments of this intermediate arrive safely and meet your specific production requirements.

Other Names (Synonyms)

5-Ethyl-2-picoline|2-METHYL-5-ETHYLPYRIDINE|Pyridine, 5-ethyl-2-methyl-|2-Picoline, 5-ethyl-|5-Ethyl-alpha-picoline|5-Ethyl-α-picoline|MEP

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

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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℃

Documentation

Safety & Handling Learn More

Danger
GHS05· Corrosive GHS06· Toxic GHS07· Irritant GHS08· Health Hazard

Hazard Statements

H227 Combustible liquid
H302 Harmful if swallowed
H311 Toxic in contact with skin
H314 Causes severe skin burns and eye damage

Precautionary Statements

P203 Obtain, consult and follow expert instructions for use.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

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
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