Agent Name

o-Cymene

CAS Number

527-84-4

Formula

C10-H14

Major Category

Solvents

Synonyms

1-Isopropyl-2-methylbenzene; 1-Methyl-2-(1-methylethyl)benzene; 1-Methyl-2-isopropylbenzene; 1-Methyl-2-isopropylbenzol; 2-Isopropyltoluene; Benzene, 1-methyl-2-(1-methylethyl)-; CYMENE, ORTHO; o-Cymol; o-Isopropyltoluene; [ChemIDplus] UN2046

Category

Aromatic Solvents

Description

Colorless liquid; [Hawley] Clear nearly colorless liquid; [MSDSonline]

Sources/Uses

A volatile constituent of the essential oil of olibanum; Used as a solvent, metal polish additive, and intermediate for resin manufacturing; Meta, ortho, and para isomers are usually synthesized by alkylation of toluene; [HSDB]

Comments

Emergency treatment: "Toluene"; [HSDB] An irritant; [MSDSonline] See "Toluene."

Exposure Assessment
Vapor Pressure

1.5 mm Hg

Lethal Concentration

LC50 (mice) = 10,300 mg/m3

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Cymenes."

Adverse Effects
Neurotoxin

CNS Solvent Syndrome

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
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: