NIOSH Pocket Guide to Chemical Hazards

Chlorinated diphenyl oxide CAS
C12H10-nClnO RTECS
Synonyms & Trade Names
Synonyms depend on the degree of chlorination of diphenyl oxide [(C6H5)2O], ranging from monochlorodiphenyl oxide [(C6H4Cl)O(C6H5)] to decachlorodiphenyl oxide [(C6Cl5)O(C6Cl5)].
DOT ID & Guide
NIOSH REL: TWA 0.5 mg/m3
OSHA PEL: TWA 0.5 mg/m3
IDLH 5 mg/m3 Conversion
Physical Description
Appearance and odor vary depending upon the specific compound.
Properties vary depending upon the specific compound.

Incompatibilities & Reactivities
Strong oxidizers
Measurement Methods
NIOSH 5025
Personal Protection & Sanitation
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily

First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA
Up to 5 mg/m3: (APF = 10) Any supplied-air respirator/(APF = 50) Any self-contained breathing apparatus 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 and acid gas canister having a high efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Acne-form dermatitis, liver damage
Target Organs Skin, liver