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L-Methionine(63-68-3)

L-Methionine(63-68-3)
Product IdentificationBack to Contents
【Product Name】

L-Methionine
【Synonyms】

(2S)-2-Amino-4-methylsulfanylbutanoic acid
2-Amino-4-(methylthio)butyric acid
2-Amino-4-methylthiobutanoic acid
Acimetion
L(-)-Amino-gamma-methylthiobutyric acid
L-alpha-Amino-gamma-methylmercaptobutyric acid
【CAS】

63-68-3
【Formula】

C5H11NO2S
【Molecular Weight】

149.21
【EINECS】

200-562-9
【RTECS】

PD0457000
【RTECS Class】

Mutagen; Reproductive Effector
【Merck】

13,6004
【Beilstein/Gmelin】

1722294
【Beilstein Reference】

4-04-00-03189
Physical and Chemical PropertiesBack to Contents
【Appearance】

Minute hexagonal plates from dilute alcohol.
【Solubility in water】

Very soluble
【Melting Point】

136
【Boiling Point】

278
【Vapor Pressure】

0.0002 (25 C)
【Density】

1.373 g/cm3
【pKa/pKb】

2.28 (pKa)
【Partition Coefficient】

-.56
【Usage】

Feed additive, vegetable oil enrichment, single-cell protein dl mixt.
First Aid MeasuresBack to Contents
【Ingestion】

Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
【Inhalation】

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
【Skin】

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
【Eyes】

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Handling and StorageBack to Contents
【Storage】

Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
【Handling】

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Hazards IdentificationBack to Contents
【Inhalation】

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
【Skin】

May cause skin irritation.
【Eyes】

May cause eye irritation.
【Ingestion】

May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
Exposure Controls/Personal ProtectionBack to Contents
【Personal Protection】

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
【Respirators】

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
【Exposure Effects】

Prolonged or repeated exposure may cause adverse reproductive effects. May cause fetal effects. Laboratory experiments have resulted in mutagenic effects.
Fire Fighting MeasuresBack to Contents
【Fire Fighting】

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Accidental Release MeasuresBack to Contents
【Small spills/leaks】

Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability and ReactivityBack to Contents
【Stability】

Stable under normal temperatures and pressures.
【Incompatibilities】

Strong oxidizing agents.
【Decomposition】

Nitrogen oxides, carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide.
Transport InformationBack to Contents
【HS Code】

2930 40 10
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