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5-ethyl-2-methylpyridine

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

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. Contact us for supply of 5-ethyl-2-methylpyridine Request Quote

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

Physical Properties

Melting Point-70.9 °C
Boiling Point177.8 °C @ Press: 747 Torr
Density0.9184 g/cm³ @ Temp: 23 °C
Flash Point151 °F
Appearance2-Methyl-5-ethyl pyridine is a colorless liquid with a sharp, aromatic odor.
ColorColorless to Light orange to Yellow
Odorat 0.10 % in propylene glycol. nutty strong raw potato roasted earthy
Formclear liquid
Water Solubilitypractically insoluble
Vapor Pressure1.853hPa at 20℃
Refractive Indexn 20/D 1.497(lit.)
Log P2.1 at 22℃

Safety & Handling

Danger
GHS05· CorrosiveGHS06· ToxicGHS07· IrritantGHS08· Health Hazard

Hazard Statements

H227Combustible liquid
H302Harmful if swallowed
H311Toxic in contact with skin
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H317May cause an allergic skin reaction
H318Causes serious eye damage
H319Causes serious eye irritation
H331Toxic if inhaled
H336May cause drowsiness or dizziness
H361Suspected of damaging fertility or the unborn child
H371May cause damage to organs
H402Harmful to aquatic life
H412Harmful to aquatic life with long lasting effects H311+
H331Toxic in contact with skin or if inhaled.

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P262Do not get in eyes, on skin, or on clothing.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P363Wash contaminated clothing before reuse.
P403Store in a well-ventilated place.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off immediately all contaminated clothing and wash it before reuse.
P364Take off contaminated clothing and wash it before reuse.
P378Use … for extinction.
P233Store in a well-ventilated place. Keep container tightly closed.
P331Rinse mouth. Do NOT induce vomiting.
P354IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29333990
UN Number2300
ADR Class6.1
Packing GroupIII
Storage Class6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects
WGK (Germany)3