International Chemical Safety Cards

DL-METHIONINE ICSC: 0919
DL-METHIONINE
2-Amino-4-(methylthio)butyric acid
C5H11NO2S / CH3S(CH2)2CH(NH2)COOH
Molecular mass: 149.2
CAS # 59-51-8
RTECS # PD0456000
ICSC # 0919
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Gives off irritating or toxic fumes (or gases) in a fire.

Powder, water spray, foam, carbon dioxide.
EXPLOSION


 
EXPOSURE


INHALATION
Local exhaust.
Fresh air, rest.
SKIN

Rinse skin with plenty of water or shower.
EYES
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
INGESTION
Do not eat, drink, or smoke during work.
Rinse mouth.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place.
Separated from strong oxidants. Well closed.

SEE IMPORTANT INFORMATION ON BACK
ICSC: 0919 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

DL-METHIONINE ICSC: 0919

I
M
P
O
R
T
A
N
T

D
A
T
A
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 (OELs):
TLV not established.
MAK not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by ingestion.

INHALATION RISK:


EFFECTS OF SHORT-TERM EXPOSURE:
PHYSICAL
PROPERTIES
 Melting point (decomposes): 281°C
Relative density (water = 1): 1.3
 Solubility in water, g/100 ml at 20°C: 4.8
ENVIRONMENTAL
DATA
NOTES
Neston, Lobamine, Dyprin, Cynaron, Acymethin are trade names.
ADDITIONAL INFORMATION


ICSC: 0919 DL-METHIONINE
© IPCS, CEC, 1993
IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of 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.