Shijiazhuang Shixing Amino Acid Co.,Ltd.

L-METHIONINE

[Product Name]: L-METHIONINE
[Other Name]: L-MET, L-2-AMINO-4-METHYLTHIOBUTYRIC ACID
[Molecular Formula]: C₅H₁₁NO₂S
[Structural Formula]: CH₃SCH₂CH₂CH(NH₂)COOH
[Molecular Weight]: 149.21
[CAS]: 63-68-3
[EINECS]: 200-562-9
[Description]: White crystals or crystalline powder, special odor, slightly bitterness. Soluble in water, insoluble in ethanol and in ether.
[Standard]: Pharma Grade USP38, Food Garde FCCV, or according to buyer's requirements.

Item	Pharma Grade (USP38)	Food Grade (FCCV)
Appearance	White crystal powder	White crystal powder
Assay(on dry basis)	98.5~101.5%	98.5~101.5%
Specific rotation	+22.4º~+24.7º	+21.0º~+25.0º
pH	5.6~6.1	--
Loss on drying	NMT 0.3%	0.5% MAX
Residue on ignition	NMT 0.4%	0.1% MAX
Chloride	NMT 0.05%	--
Sulfate	NMT 0.03%	--
Iron	NMT 30ppm	--
Lead	--	5mg/kg MAX
Related compounds	Individual impurities: NMT 0.5% Total impurities: NMT 2.0%	--

Usage: It is an essential amino acids, generally used as a nutritional supplement.
Packing: In fiber drum 25KG net each.
Transport and Storage: Handle with cares to avoid damaging the package, protect them from sunshine or rain. Don’t transport it with poisonous or harmful goods. Stored in shaded, cool and dry places.

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