Description
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Chemical Name: |
DL-Methionine |
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CAS Number: |
59-51-8 |
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Chemical Formula: |
C5H11NO2S |
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Molecular Weight: |
149.2074 |
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Description: |
White powder |
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* Melting Point: |
270℃~273℃ |
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Analytical Procedure |
Specification |
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Assay: |
99.0% to 100.5% |
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State of solution[transmittance]: |
Clear and colorless 98.0% min. |
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Heavy metals [Pb]: |
10ppm max. |
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PH: |
5.5 to 6.1 |
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Residue on ignition [sulfated]: |
0.1% max |
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Chloride[Cl]: |
0.02% max. |
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Sulphate: |
0.02% max |
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Ammonium[NH4]: |
0.02% max |
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Iron[Fe]: |
10ppm max. |
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Loss on drying |
0.30% max. |
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Arsenic [As2O3]: |
1.0ppm max. |
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Other amino acids: |
Chromatographically not detectable |
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