Common Name: 1,2,4-Trichlorobenzene
CAS Number: 120-82-1
DOT Number: UN 2321
Date: October 30, 1986
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HAZARD SUMMARY
* 1,2,4-Trichlorobenzene can affect you when breathed in and by
passing through your skin.
* 1,2,4-Trichlorobenzene may damage the developing fetus.
* Exposure may damage the liver and kidneys.
* Contact can irritate the eyes and skin. Prolonged contact may
cause skin burns.
* Exposure can irritate the nose and throat.
IDENTIFICATION
1,2,4-Trichlorobenzene is a colorless liquid with a pleasant odor.
It is used in heat transfer fluids, as a dielectric fluid and in
making chemicals, insecticides and fungicides.
REASON FOR CITATION
* 1,2,4-Trichlorobenzene is on the Hazardous Substance List
because it is cited by ACGIH, DOT, DEP and NFPA.
* Definitions are attached.
HOW TO DETERMINE IF YOU ARE BEING EXPOSED
* Exposure to hazardous substances should be routinely
evaluated. This may include collecting air samples. Under OSHA
1910.20, you have a legal right to obtain copies of sampling
results from your employer. If you think you are experiencing
any workrelated health problems, see a doctor trained to
recognize occupational diseases. Take this Fact Sheet with
you.
* ODOR THRESHOLD = 1.4 ppm.
* The odor threshold only serves as a warning of exposure. Not
smelling it does not mean you are not being exposed.
WORKPLACE EXPOSURE LIMITS
ACGIH: The recommended airborne exposure limit is 5 ppm, which
should not be exceeded at any time.
* The above exposure limit is for air levels only. When skin
contact also occurs, you may be overexposed, even though air
levels are less than the limit listed above.
WAYS OF REDUCING EXPOSURE
* Where possible, enclose operations and use local exhaust
ventilation at the site of chemical release. If local exhaust
ventilation or enclosure is not used, respirators should be
worn.
* Wear protective work clothing.
* Wash thoroughly immediately after exposure to 1,2,4-
Trichlorobenzene and at the end of the workshift.
* Post hazard and warning information in the work area. In
addition, as part of an ongoing education and training effort,
communicate all information on the health and safety hazards
of 1,2,4-Trichlorobenzene t.
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