2,3,7,8-Tetrachloro-dibenzo-p-dioxin
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CAS
1746-01-6
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C12H4Cl4O2
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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.]
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: Ca See Appendix A
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OSHA PEL: none
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IDLH
Ca [N.D.]
See: IDLH INDEX
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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
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BP: Decomposes
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MLT: 581°F
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Sol: 0.00000002%
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VP(77°F): 0.000002 mmHg
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IP: ?
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Sp.Gr: ?
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Fl.P: ?
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UEL: ?
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LEL: ?
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Incompatibilities & Reactivities
UV light (decomposes)
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Measurement Methods
None available
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated/Daily
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash, Quick drench
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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 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
Important additional information about respirator selection
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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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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