DL-Methionine Chemical Properties
mp 284 °C (dec.)(lit.)
storage temp. 0-6°C
solubility 1 M HCl: 0.5 M at 20 °C, clear, colorless
Water Solubility 2.9 g/100 mL (20 ºC)
Stability: Stable. Incompatible with strong oxidising agents.
CAS DataBase Reference 59-51-8(CAS DataBase Reference)
NIST Chemistry Reference Methionine(59-51-8)
EPA Substance Registry System Methionine(59-51-8)
Desciption: dl-methionine white, crystalline platelets or powder having a characteristic odor. one g dissolves in about 30 ml of water. it is soluble in dilute acids and alkali hydroxides in solutions. it is very slightly soluble in alcohol, and practically insoluble in ethyl ether.
reference standard : aji , usp
assay 98.5 - 101.5%
pb ( gt-18 ) d10mg/kg
heavy metal d0.002%
loss on dying (105oc,3h ) d0.5%
residue on ignition (gt-27 ) d0.1%
usage: dl- methionine is a necessary amino acids to human body must. will cause the liver, kidney obstacle if lack. for protect the liver function particularly necessary, belong to the amino acids medicine, the nourishment increases to repair uses for the liver the hard changing and fat liver. can promote the hair, nail grow, counteract poison with strengthen the muscle movable ability etc. function. adding into the wheat, corn...etc. plant food is to belongs to the restrict amino acids, can use as the animal feed additive
fibre drum double polyethylene bags inside 20kgs .