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DDT

Synonyms & Trade Names
p,p'-DDT; Dichlorodiphenyltrichloroethane; 1,1,1-Trichloro-2,2-bis(p-chlorophenyl)ethane
CAS No.
50-29-3
RTECS No.
KJ3325000
DOT ID & Guide
2761 151
Formula
(C6H4Cl)2CHCCl3
Conversion
IDLH
Ca [500 mg/m3]
See: 50293
Exposure Limits
NIOSH REL
: Ca TWA 0.5 mg/m3 See Appendix A
OSHA PEL
: TWA 1 mg/m3 [skin]
Measurement Methods

NIOSH S274 (II-3)
See: NMAM or OSHA Methods
Physical Description
Colorless crystals or off-white powder with a slight, aromatic odor. [pesticide]
MW:
354.5
BP:
230°F (Decomposes)		 MLT: 227°F
Sol:
Insoluble
VP:
0.0000002 mmHg
IP:
?
Sp.Gr:
0.99
Fl.P:
162-171°F
UEL:
?
LEL:
?
Combustible Solid
Incompatibilities & Reactivities
Strong oxidizers, alkalis
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin; paresthesia tongue, lips, face; tremor; anxiety, dizziness, confusion, malaise (vague feeling of discomfort), headache, lassitude (weakness, exhaustion); convulsions; paresis hands; vomiting; [potential occupational carcinogen]
Target Organs
Eyes, skin, central nervous system, kidneys, liver, peripheral nervous system
Cancer Site
[in animals: liver, lung & lymphatic tumors]
Personal Protection/Sanitation
(See protection codes)
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 wash promptly
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 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

See also: INTRODUCTION   See ICSC CARD: 0034   See MEDICAL TESTS: 0065
 

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