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 Explosive 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

o-Dichlorobenzene

NIOSH REL

OSHA PEL

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