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]

Flammability (NFPA)

2: High ambient temperature required

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

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Processes

Industrial Processes with risk of exposure: