METHOXYCHLOR†
Chemical Identification | |
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CAS # | 72-43-5 |
Formula |
C₁₆H₁₅Cl₃O₂ |
Synonyms |
p,p'-dimethoxydiphenylftrichloroethane; DMDT; methoxy-DDT; 2,2-bis(p-methoxyphenyl)-1,1,1-trichloroethane; 1,1,1-trichloro-2,2-bis-(p-methoxyphenyl)ethane |
Physical Properties | |||
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Physical description | Colorless to light-yellow crystals with a slight, fruity odor. | ||
Boiling point | decomposes | Molecular weight | 345.7 |
Freezing point/melting point | 171°F | Vapor pressure | Very low |
Flash point | Vapor density | 12 | |
Specific gravity | 1.41 | Ionization potential | |
Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
NFPA health rating | NFPA fire rating | ||
NFPA reactivity rating | NFPA special instruction | ||
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Monitoring Methods Used by OSHA | ||||||
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Analyte code (IMIS no.) | 1646 | |||||
Sampling group | ||||||
Sampler/Sampling media | OSHA versatile sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg) with GFF enclosed [SKC 226-30-16] | |||||
Sampling time* |
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Sampling volume (TWA)* | 60 L |
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Sampling flow rate (TWA)* | 1 L/min |
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Sampling volume (STEL/Peak/C)* |
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Sampling flow rate (STEL/Peak/C)* |
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Analytical method instruments | GC-ECD | |||||
Method reference | OSHA PV2038 (partially validated) | |||||
Notes |
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Special requirements |
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* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
Wipe Method | |
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Sampler/Sampling media |
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Bulk Method |
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Limit the amount of bulk submitted to 1 g or 1 mL. |
On-Site Screening Techniques | ||||||
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Device | ||||||
Model/Type | ||||||
Sampling information (see manufacturer instructions) |
Exposure Limits | |||||||
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OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
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PEL-TWA |
15 mg/m³ (total dust) |
REL-TWA |
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TLV-TWA |
10 mg/m³ [1992] |
PEL-TWA |
10 mg/m³ |
PEL-STEL |
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REL-STEL |
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TLV-STEL |
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PEL-STEL |
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PEL-C |
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REL-C |
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TLV-C |
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PEL-C |
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Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Notes: |
Notes:
CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. (LOQ 0.07 mg/m³) See Appendix A, NIOSH Potential Occupational Carcinogens. |
Notes:
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Notes:
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Health factors: See NIH-NLM PubChem. | IDLH |
5000 mg/m³ |
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Carcinogenic classifications: IARC-3, NIOSH-Ca, TLV-A4, EPA-D |
Notes:
Ca |
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AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
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Additional Resources and Literature References |
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NOAA: CAMEO Chemicals - Methoxyclor NIOSH: Pocket Guide to Chemical Hazards - Methoxyclor Literature References
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Last Updated Date : 01/05/2021