DL-METHIONINE

PRODUCT IDENTIFICATION
CAS NO.

59-51-8

DL-METHIONINE

EINECS NO. 200-432-1
FORMULA CH3SCH2CH2CH(NH2)COOH
MOL WT. 149.21

H.S. CODE

 2930.40

TOXICITY

  
SYNONYMS DL-2-Amino-4-(Methylthio)butyric Acid; Racemethionine;
(±)-2-Amino-4-(methylmercapto)butyric acid; Methilonin; Acimetion; alpha-Amino-gamma-methylmercaptobutyric acid; Banthionine; Cynaron;
PRICE

U$4.20/kg CFR by sea for 1,000kgs

CLASSIFICATION

  

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE White crystalline powder
MELTING POINT 280 C
BOILING POINT  
SPECIFIC GRAVITY 1.34
SOLUBILITY IN WATER Soluble (ca. 18 g/l)
pH 5.6 - 6.1 (1% aq. solution)
VAPOR DENSITY

 

REFRACTIVE INDEX

  

NFPA RATINGS

 Health: 1; Flammability: 0; Reactivity: 0

AUTOIGNITION

 

FLASH POINT

 

STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION OF METHIONINE

METHIONINE, an essential amino acid (sulfur-containing) that is not synthesized by the body and must be obtained from food. It contributes to supply mineral sulfur improving the tone and pliability of the skin, conditioning the hair and strengthens nails and protecting the cells from airborne pollutants. It contributes to the other compounds including S-adenosyl-methionine (SAM), which participate in liabile methyl groups and sulfur to over 100 biochemical reactions for normal brain function, and L-Cysteine, which is a component of Glutathione, an important antioxidant molecule in the body.  Methionine is also a transporter of the antioxidant mineral Selenium. METHIONINE occurs as two optical isomers, a dextro and a levo form. Synthetic DL-Methionine is used as an animal feed additive.
SALES SPECIFICATION (FCCIV)

APPEARANCE

 White crystalline powder

ASSAY

 98.5~101.5%
LOSS ON DRYING

0.5% max
ASH

0.5% max
HEAVY METALS

20ppm max
LEAD

10ppm max
ARSENIC

3 ppm max
RESIDUE ON IGNITION

0.1% max
TRANSPORTATION
PACKING
25kgs in fiber drum
HAZARD CLASS not regulated
UN NO.  
OTHER INFORMATION
Hazard Symbols: n/a, Risk Phrases: n/a, Safety Phrases: 24/25/28A/37/45