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o-Dichlorobenzene																				Related Pages
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

FormulaC6H4Cl2
	Conversion
			1 ppm = 6.01 mg/m3
	IDLH
			200 ppmSee: 95501

Exposure Limits
			NIOSH RELC 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 Weight147.0	
	Boiling Point357°F
	Freezing Point1°F
	Solubility0.01%
	Vapor Pressure1 mmHg
	Ionization Potential9.06 eV											
Specific Gravity1.30	
	Flash Point151°F
	Upper Explosive Limit9.2%
	Lower Explosive Limit2.2%
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 canisterAny appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 1066
					  MEDICAL TESTS: 0255

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
First Aid Procedures Follow NIOSH Facebook
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