Agent Name

2-Methyl-5-ethylpyridine

Alternative Name

5-Ethyl-2-picoline

CAS Number

104-90-5

Formula

C8-H11-N

Major Category

Nitrogen Compounds

Synonyms

5-Ethyl-2-picoline; 2,5-Aldehydine; 2-Picoline, 5-ethyl-; 3-Ethyl-6-methylpyridine; 5-Ethyl-2-methylpyridine; 5-Ethyl-alpha-picoline; 6-Methyl-3-ethylpyridine; Aldehydecollidine; Aldehydine; Aldehydkollidin; MEP; MEP (VAN); Pyridine, 5-ethyl-2-methyl-; [ChemIDplus] UN2300

Category

Pyridines

Description

Colorless liquid with a sharp, penetrating odor; [Hawley] Colorless or pale yellow liquid; [MSDSonline]

Sources/Uses

Used as a corrosion inhibitor for chlorinated solvents and in the manufacturing of other chemicals (nicotinic acid, nicotinamide, vinyl pyridines for copolymers, germicides, insecticides, and textile finishes); [HSDB] Used as a solvent in organic synthesis; [eChemPortal: SIDSUNEP]

Comments

Emergency treatment: "Pyridine"; Pyridine is an irritant that causes CNS depression after ingestion of 1/2 cup or inhalation of 6-12 ppm; It can cause liver and kidney injury; [HSDB] A severe irritant on rabbit skin; [RTECS] A corrosive substance; Not genotoxic and no reproductive effects; [Reference #1] May cause burns to skin and eyes; [CAMEO] Corrosive to skin and eyes, based on animal studies; [CHEMINFO] Safe when used as a flavoring agent in food; [JECFA] Causes burns; Harmful by inhalation or ingestion; [Aldrich MSDS] See "Pyridine."

Reference Link

OECD SIDS: 5-Ethyl-2-picoline - 1995

Exposure Assessment
Vapor Pressure

1.43 mm Hg

Lethal Concentration

LC50 (rat) = 540 ppm/4h

Explanatory Notes

Flash point = 68 deg C; [HSDB]

Adverse Effects
Neurotoxin

Other CNS Neurotoxin

Hepatotoxin

Hepatotoxin, Secondary

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Processes

Industrial Processes with risk of exposure: