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PRODUCTS SHOW
DL-Methionine
|
Product |
DL-Methionine |
|
CAS No. |
59-51-8 |
|
Molecular Formula |
C5H11NO2S |
|
Molecular Weight |
149.21 |
|
Structural Formula |
|
|
Quality Standard |
USP/EP/BP/FCC |
|
Packing |
25kg paper drum with inner double PE bags |
|
Shelf Life |
2 Years |
|
Storage |
Store in dry and cool place, and keep far away from sunlight |
|
Specification |
Standard |
|
Appearance |
White crystalline powder |
|
Identification |
The IR spectrum corresponds to that of the reference standard |
|
Assay (on dried matter) |
98.5～101.5% |
|
Clarity of solution |
Clear, colorless |
|
pH value (1g/100mL in water) |
5.6~6.1 |
|
Chloride(as Cl) |
≤0.05% |
|
Heavy metals (as Pb) |
≤0.0015% |
|
Lead (as Pb) |
≤0.001% |
|
Arsenic(as As) |
≤0.00015% |
|
Loss on drying |
≤0.3% |
|
Sulphate (SO4-2) |
≤0.03% |
|
Iron (as Fe) |
≤0.003% |
|
Residue on ignition (as sulphate ash) |
≤0.4% |
|
Organic volatile impurities |
Meets the requirement |
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