NIOSH Pocket Guide to Chemical Hazards

Chlorodiphenyl (54% chlorine) CAS 11097-69-1
C6H3Cl2C6H2Cl3 (approx) RTECS TQ1360000
Synonyms & Trade Names
Aroclor® 1254, PCB, Polychlorinated biphenyl
DOT ID & Guide
2315 171
NIOSH REL*: Ca TWA 0.001 mg/m3 See Appendix A [*Note: The REL also applies to other PCBs.]
OSHA PEL: TWA 0.5 mg/m3 [skin]
IDLH Ca [5 mg/m3] Conversion
Physical Description
Colorless to pale-yellow, viscous liquid or solid (below 50°F) with a mild, hydrocarbon odor.
MW: 326 (approx)
BP: 689-734°F
FRZ: 50°F
Sol: Insoluble
VP: 0.00006 mmHg
IP: ?

Sp.Gr(77°F): 1.38
Fl.P: NA

Nonflammable Liquid, but exposure in a fire results in the formation of a black soot containing PCBs, polychlorinated dibenzofurans, and chlorinated dibenzo-p-dioxins.
Incompatibilities & Reactivities
Strong oxidizers
Measurement Methods
NIOSH 5503
See: NMAM or OSHA Methods
Personal Protection & Sanitation
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash, Quick drench
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations NIOSH
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration: (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 having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, chloracne; liver damage; reproductive effects; [potential occupational carcinogen]
Target Organs Skin, eyes, liver, reproductive system

Cancer Site [in animals: tumors of the pituitary gland & liver, leukemia]