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Dichlorodiphenyltrichloroethane (DDT)

General Description

  • Synonyms: p,p'-DDT; p,p'-Dichlorodiphenyltrichloroethane; 1,1,1-Trichloro-2,2-bis(p-chlorophenyl)ethane
  • OSHA IMIS Code Number: 0847
  • IMIS Name History: DDT prior to 5/23/08
  • Chemical Abstracts Service (CAS) Registry Number: 50-29-3
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: KJ3325000
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: 2761 151
  • NIOSH Pocket Guide to Chemical Hazards, DDT: chemical description, physical properties, potentially hazardous incompatibilities, and more

Exposure Limits

  • OSHA Permissible Exposure Limit (PEL):
  • American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 1 mg/m3 TWA; Appendix A3 - Confirmed animal carcinogen with unknown relevance to humans
  • National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.5 mg/m3 TWA; Appendix A - NIOSH Potential Occupational Carcinogens

Health Factors

  • Carcinogenic Classification:
  • NIOSH Immediately Dangerous To Life or Health Concentration (IDLH): 500 mg/m3
  • Potential Symptoms: Paresthesia of tongue, lips, face; tremors; apprehension, dizziness, fatigue, confusion, malaise; headaches; convulsions; paresis of hands; vomiting; eye, skin irritation; (carcinogenic)
  • Health Effects: Chronic/Cumulative toxicity-(CNS) (HE7) and (HE3); Mutagen (HE2)
  • Affected Organs: CNS, kidneys, liver, skin, PNS
  • Literature Basis:

Monitoring Methods used by OSHA

Laboratory Sampling/Analytical Method:
  • Glass Fiber Filter (37 mm)
  • maximum volume: 90 Liters
  • maximum flow rate: 1.5 L/min
  • current analytical method: Gas Chromatography; GC/ECD
  • method reference: NIOSH Analytical Method (NIOSH S-274)
  • method classification: Fully Validated
  • note: Transfer filter to glass screw cap bottle within one hour after sampling.
Wipe Sampling Method:
  • Whatman 41
  • analytical solvent: isooctane
  • current analytical method: Gas Chromatography; GC/ECD
Bulk Method:
  • Limit the amount of bulk submitted to one gram or one mL.

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