2-Amino-4-(methylthio)butyric acid
C5H11NO2S / CH3S(CH2)2CH(NH2)COOH
Molecular mass: 149.2
ICSC # 0919
CAS # 59-51-8
RTECS # PD0456000
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Gives off irritating or toxic fumes (or gases) in a fire.
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Powder, water spray, foam, carbon dioxide.
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Explosion
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Exposure
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•Inhalation
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Local exhaust.
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Fresh air, rest.
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•Skin
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Rinse skin with plenty of water or shower.
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•Eyes
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Safety spectacles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Do not eat, drink, or smoke during work.
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Rinse mouth.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers.
Carefully collect remainder,
then remove to safe place.
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Separated from
strong oxidants.
Well closed.
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Important Data
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Physical State; Appearance:
COLOURLESS CRYSTALS
OR WHITE POWDER.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing toxic fumes of sulfur oxides, nitrous oxides.
Occupational Exposure Limits:
TLV not established.
MAK not established.
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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:
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Physical
Properties
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Melting point (decomposes): 281°C
Relative density (water = 1): 1.3
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Solubility in water, g/100 ml at 20°C: 4.8
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Environmental
Data
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N O T E S
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Neston, Lobamine, Dyprin, Cynaron, Acymethin are trade names.
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ADDITIONAL INFORMATION
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ICSC: 0919
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DL-METHIONINE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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