Agent Name


CAS Number




Major Category



1-Chloro-4-methylbenzene; 1-Methyl-4-chlorobenzene; 4-Chloro-1-methylbenzene; Benzene, 1-chloro-4-methyl-; Toluene, p-chloro-; p-Chlorotoluene; p-Tolyl chloride; [ChemIDplus] UN2238


Chlorinated Aromatics


Colorless liquid; [Hawley] Colorless liquid; mp = 7-9 deg C; [MSDSonline]


Used as a solvent and intermediate for dyes and other organic chemicals; [Hawley] As of 2005, used only as intermediate for other organic compounds; [eChemPortal: SIDSUNEP]


Defats the skin; [ICSC] Histopathological effects to liver (centrilobular hepatocellular hypertrophy), kidney (exacerbation of chronic progressive nephropathy), and adrenal cortex (adrenal cortical hyperplasia) were observed in 90 day feeding study with rats at the highest dose (800 mg/kg); Not mutagenic in Ames salmonella/microsome assay; [HSDB] A very mild skin and eye irritant, based on animal studies; [CHEMINFO] Rapidly absorbed by GI and respiratory tract, with limited absorption through the skin; Primarily excreted through urine; Mildly irritating to skin and eyes of rabbits; A skin sensitizer in the guinea pig maximization test; Effects in high single oral doses with rats include body tremor, decreased motor activity, and cyanosis; Histopathological findings limited to signs of irritation in the GI and respiratory tracts (severity increasing with dosage); Liver and kidney shown to be target organs of toxicity based on 29 and 90 day feeding studies with rats; No effects observed to reproductive organs; No evidence of mutagenicity; May be teratogenic at doses maternally toxic based on limited evidence from studies with the o-isomer; [eChemPortal: SIDSUNEP]

Exposure Assessment
Vapor Pressure

2.69 mm Hg

Odor Threshold Low

0.05 ppm

Lethal Concentration

LC50 (mice) = 34,000 mg/m3/2h

Explanatory Notes

Flash point = 49 deg C; [ICSC] Odor threshold from CHEMINFO; The Guide in the Emergency Response Guidebook is for "Chlorotoluenes."

Flammability (NFPA)

2: High ambient temperature required

Adverse Effects

CNS Solvent Syndrome


Hepatotoxin, Secondary

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information


Chemical Information

Search ChemIDplus

Related Information in HazMap

Occupational diseases associated with exposure to this agent: