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N-NITROSODIMETHYLAMINEICSC: 0525
Dimethylnitrosamine
N-Methyl-N-nitrosomethylamine
DMN
March 2001
CAS #: 62-75-9
UN #: 2810
EC Number: 200-549-8

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible.    NO open flames.    Use powder, carbon dioxide.   

 AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS PREVENTION FIRST AID
Inhalation Sore throat. Cough. Nausea. Diarrhoea. Vomiting. Headache. Weakness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness. Pain.  Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Pain. Redness.  Wear face shield or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal cramps. Further see Inhalation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Give a slurry of activated charcoal in water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Evacuate danger area! Personal protection: chemical protection suit including self-contained breathing apparatus. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: I 

STORAGE
Separated from strong oxidants and food and feedstuffs. Cool. Keep in the dark. Well closed. 
PACKAGING
Do not transport with food and feedstuffs.
Unbreakable packaging.
Put breakable packaging into closed unbreakable container. 
N-NITROSODIMETHYLAMINE ICSC: 0525
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
YELLOW OILY LIQUID. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces nitrogen oxides. Reacts with strong oxidants and strong bases. 

Formula: C2H6N2O / (CH3)2NN=O
Molecular mass: 74.1
Boiling point: 151°C
Relative density (water = 1): 1.0
Solubility in water: very good
Vapour pressure, Pa at 20°C: 360
Relative vapour density (air = 1): 2.56
Flash point: 61°C
Octanol/water partition coefficient as log Pow: -0.57  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation and by ingestion. 

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the liver. This may result in jaundice. The effects may be delayed. See Notes. Medical observation is indicated. 

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of long-term or repeated exposure
The substance may have effects on the liver. This may result in liver function impairment and cirrhosis. This substance is probably carcinogenic to humans. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: (skin); A3 (confirmed animal carcinogen with unknown relevance to humans).
MAK: skin absorption (H); carcinogen category: 2 

ENVIRONMENT
 

NOTES
The symptoms of jaundice do not become manifest until some hours have passed.
Environmental effects from the substance have not been investigated adequately.
TLV Note: Exposure by all routes should be carefully controlled to levels as low as possible. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: T+, N; R: 45-25-26-48/25-51/53; S: 53-45-61; Note: E 

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    See Also:
       Toxicological Abbreviations
       N-Nitrosodimethylamine (IARC Summary & Evaluation, Volume 1, 1972)