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o-Dichlorobenzene

Synonyms & Trade Names
o-DCB, 1,2-Dichlorobenzene, ortho-Dichlorobenzene, o-Dichlorobenzol
CAS No.
95-50-1
RTECS No.
CZ4500000
DOT ID & Guide
1591 152
Formula
C₆H₄Cl₂
Conversion
1 ppm = 6.01 mg/m3
IDLH
200 ppm
See: 95501
Exposure Limits
NIOSH REL
C 50 ppm (300 mg/m3)
OSHA PEL
C 50 ppm (300 mg/m3)
Measurement Methods
NIOSH 1003;
OSHA 7
See: NMAM or OSHA Methods
Physical Description
Colorless to pale-yellow liquid with a pleasant, aromatic odor. [herbicide]
Molecular Weight
147.0
Boiling Point
357°F
Freezing Point
1°F
Solubility
0.01%
Vapor Pressure
1 mmHg
Ionization Potential
9.06 eV
Specific Gravity
1.30
Flash Point
151°F
Upper Exposive Limit
9.2%
Lower Explosive Limit
2.2%
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities
Strong oxidizers, aluminum, chlorides, acids, acid fumes
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, nose; liver, kidney damage; skin blisters
Target Organs
Eyes, skin, respiratory system, liver, kidneys
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:No recommendation
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash promptly
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

Up to 200 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)£
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 1066   MEDICAL TESTS: 0255

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