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N-Nitrosodimethylamine

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Synonyms & Trade Names
Dimethylnitrosamine, N,N-Dimethylnitrosamine, DMNA, N-Methyl-N-nitroso-methanamine, NDMA, N-Nitroso-N,N-dimethylamine
CAS No.
62-75-9
RTECS No.
IQ0525000
DOT ID & Guide
Formula
(CH₃)₂N₂O
Conversion
IDLH
Ca [N.D.]
See: IDLH INDEX
Exposure Limits
NIOSH REL
Ca See Appendix A
OSHA PEL
[1910.1016] See Appendix B
Measurement Methods
NIOSH 2522;
OSHA 38
See: NMAM or OSHA Methods
Physical Description
Yellow, oily liquid with a faint, characteristic odor.
Molecular Weight
74.1
Boiling Point
306°F
Freezing Point
?
Solubility
Soluble
Vapor Pressure
3 mmHg
Ionization Potential
8.69 eV
Specific Gravity
1.005
Flash Point
?
Upper Explosive Limit
?
Lower Explosive Limit
?
Combustible Liquid
Incompatibilities & Reactivities
Strong oxidizers [Note: Should be stored in dark bottles.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
nausea, vomiting, diarrhea, abdominal cramps; headache; fever; enlarged liver, jaundice; decreased liver, kidney, pulmonary function; [potential occupational carcinogen]
Target Organs
Liver, kidneys,lungs
Cancer Site
[in animals; lung, kidney, liver & nasal cavity 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 immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

(See Appendix E)

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 with 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   ICSC CARD: 0525   MEDICAL TESTS: 0167
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health