[Commodity name]: L-METHIONINE
[Structural formula]: CH₃SCH₂CH₂CH(NH₂)COOH
[Molecular Formula]: C₅H11NO₂S
[Molecular weight]: 149.21
[Properties]: White crystals or crystalline powder,special odor, slightly bitterness. Soluble in water, insoluble in ethanol and in ether.
[Standard]: EP 4, USP24 or according to buyer.

Items

EP 4

USP24

Assay(on dry basis)

99%~101 %

98.5%~101.5%

Specific rotation

+22.5°~ +24.0°

+21.9°~ +24.1°

Chloride

0.02% MAX

0.05% MAX

Ammonium

0.02% MAX

-

Iron

0.001% MAX

0.003% MAX

Heavy metals

0.001% MAX

0.0015% MAX

Arsenic

-

0.00015% MAX

Loss on drying

0.5% MAX

0.3% MAX

Residue on ignition

0.1% MAX

0.1% MAX

[USAGE]: L-METHIONINE is one of the essential amino acids, mainly used as food additives, and formatting complex amino acid perfusion and preparation.
[Packing]: In fiber drum 25KG net each.
[Transport and Storage]: Handle with cares to avoid damaging the package, protects them from sunshine or rain. Don’t transport it with poisonous or harmful goods. Stored in shaded, cool and dry places.