# NIOSH Pocket Guide to Chemical Hazards
N-Nitrosodimethylamine | CAS 62-75-9
(CH3)2N2O | RTECS IQ0525000
Synonyms & Trade Names Dimethylnitrosamine; N,N-Dimethylnitrosamine; DMNA; N-Methyl-N-nitroso-methanamine; NDMA; N-Nitroso-N,N-dimethylamine | DOT ID & Guide
Exposure Limits | NIOSH REL: Ca See Appendix A
OSHA PEL: [1910.1016] See Appendix B
IDLH Ca [N.D.] | Conversion
Physical Description Yellow, oily liquid with a faint, characteristic odor.
MW: 74.1 | BP: 306°F | FRZ: ? | Sol: Soluble
VP: 3 mmHg | IP: 8.69 eV |  | Sp.Gr: 1.005
Fl.P: ? | UEL: ? | LEL: ? |
Combustible Liquid
Incompatibilities & Reactivities Strong oxidizers [Note: Should be stored in dark bottles.]
Measurement Methods NIOSH 2522; OSHA 38
Personal Protection & Sanitation 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 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 a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
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]
See also: INTRODUCTION