Synonyms & Trade NamesDioxin, Dioxine, TCDBD, TCDD, 2,3,7,8-TCDD [Note: Formed during past production of 2,4,5-trichlorophenol, 2,4,5-T & 2(2,4,5-trichlorophenoxy)propionic acid.]
DOT ID & Guide
See: IDLH INDEX
NIOSH RELCa See Appendix A
Physical DescriptionColorless to white, crystalline solid. [Note: Exposure may occur through contact at previously contaminated worksites.]
Vapor Pressure(77°F): 0.000002 mmHg
Upper Exposive Limit?
Lower Explosive Limit?
Incompatibilities & ReactivitiesUV light (decomposes)
Exposure Routesinhalation, skin absorption, ingestion, skin and/or eye contact
Symptomsirritation eyes; allergic dermatitis, chloracne; porphyria; gastrointestinal disturbance; possible reproductive, teratogenic effects; In Animals: liver, kidney damage; hemorrhage; [potential occupational carcinogen]
Target OrgansEyes, skin, liver, kidneys, reproductive system
Cancer Site[in animals: tumors at many sites]
Personal Protection/Sanitation(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated/Daily
Remove:When wet or contaminated
Provide:Eyewash, Quick drench
First Aid(See procedures)
Skin:Soap flush immediately
Swallow:Medical attention immediately
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
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division