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| 2,3,7,8-Tetrachloro-dibenzo-p-dioxin | CAS 1746-01-6 | ||
| C12H4Cl4O2 | RTECS HP3500000 | ||
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Synonyms & Trade Names Dioxin; 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 |
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Exposure Limits |
NIOSH REL: Ca See Appendix A | ||
| OSHA PEL: none | |||
| IDLH Ca [N.D.] | Conversion | ||
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Physical Description Colorless to white, crystalline solid. [Note: Exposure may occur through contact at previously contaminated worksites.] |
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MW: 322.0 |
BP: Decomposes |
MLT: 581°F |
Sol: 0.00000002% |
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VP(77°F): 0.000002 mmHg |
IP: ? |
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Sp.Gr: ? |
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Fl.P: ? |
UEL: ? |
LEL: ? |
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Incompatibilities & Reactivities UV light (decomposes) |
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Measurement Methods None available |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated/Daily Remove: When wet or contaminated Change: Daily Provide: Eyewash, Quick drench |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap flush immediately Breathing: Respiratory support Swallow: Medical attention immediately |
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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 |
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| Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes; allergic dermatitis, chloracne; porphyria; gastrointestinal disturbance; possible reproductive, teratogenic effects; in animals: liver, kidney damage; hemorrhage; [potential occupational carcinogen] | |
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Target Organs
Eyes, skin, liver, kidneys, reproductive system Cancer Site [in animals: tumors at many sites] |
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| See also: INTRODUCTION |