N-NITROSODIMETHYLAMINE‡
Chemical Identification | |
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CAS # | 62-75-9 |
Formula |
C₂H₆N₂O |
Synonyms |
dimethylnitrosamine; N,N-dimethylnitrosamine; DMNA; N-methyl-N-nitroso-methanamine; NDMA; N-nitroso-N,N-dimethylamine, nitrosodimethylamine |
Physical Properties | |||
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Physical description | Yellow, oily liquid with a faint characteristic odor. | ||
Boiling point | 306°F | Molecular weight | 74.1 |
Freezing point/melting point | Vapor pressure | 3 mmHg | |
Flash point | 142°F | Vapor density | 2.56 |
Specific gravity | 1.005 | Ionization potential | 8.69 eV |
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.) | 1942 | |||||
Sampling group | ||||||
Sampler/Sampling media | ThermoSorb/N air sampler [No longer available] | |||||
Sampling time* | 75 min |
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Sampling volume (TWA)* | 75 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-TEA | |||||
Method reference | OSHA 27 (fully validated) | |||||
Notes | This media is no longer available. OSHA staff please contact the SLTC prior to sampling at (801) 233-4900. |
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Special requirements | Store samples in freezer. |
* 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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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 |
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REL-TWA |
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TLV-TWA |
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PEL-TWA |
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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 |
Y |
Skin notation |
N |
Notes:
See 29 CFR 1910.1016, N-Nitrosodimethylamine (requirements identical to29 CFR 1910.1003, 13 Carcinogens). |
Notes:
CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens. |
Notes:
Exposure by all routes should be carefully controlled to levels as low as possible. [1992] |
Notes:
See California Code of Regulations, Title 8, Section 5209. Carcinogens. |
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Health factors: See NIH-NLM PubChem. | IDLH | ||||||
Carcinogenic classifications: IARC-2A, NIOSH-Ca, NTP-R, OSHA-Ca, TLV-A3, EPA-B2 |
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 - N-Nitrosodimethylamine NIOSH: Pocket Guide to Chemical Hazards - N-Nitrosodimethylamine Literature References
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Last Updated Date : 01/28/2021