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DL-METHIONINE
ICSC: 0919
Peer-Review Status: 04.10.1997 Validated
2-Amino-4-(methylthio)butyric acid 
CAS #: 59-51-8 RTECS #: PD0456000
EINECS #: 200-432-1
    Formula: C5H11NO2S / CH3S(CH2)2CH(NH2)COOH
Molecular mass: 149.2

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Gives off irritating or toxic fumes (or gases) in a fire.    Use water spray, powder, foam, carbon dioxide. 
EXPLOSION      
 
EXPOSURE      
Inhalation   Use local exhaust.  Fresh air, rest. 
Skin     Rinse skin with plenty of water or shower. 
Eyes   Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Sweep spilled substance into covered containers. Carefully collect remainder. Then store and dispose of according to local regulations.   
EC Classification
 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
  Separated from strong oxidants. Well closed. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS CRYSTALS OR WHITE POWDER. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces toxic fumes of sulfur oxides and nitrous oxides. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

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

Inhalation risk
 

Effects of short-term exposure
 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at 281°C
Relative density (water = 1): 1.3
Solubility in water, g/100ml at 20°C: 4.8  
 

NOTES
Neston, Lobamine, Dyprin, Cynaron, Acymethin are trade names. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations
       DL-METHIONINE (JECFA Evaluation)