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| Producer, Manufacturer,
Supplier of |
| L-Methionine |
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| GRR
Code : |
0907 |
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| CAS No : |
63-68-3 |
| CI No : |
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| Molecular Formula
: |
C5H11NO2S |
| Molecular Weight
: |
149.21 |
| Description
: |
White crystalline powder or crystals · Solubility in water at 20°C 54 g/l. Soluble in mineral acids. Insoluble in organic solvents · M.P.: 280-285 °C · [a]20/D: 23,7° (c=5, HCl 5M) ·
APPLICATIONS: Analytical reagent · Pharmaceutical Industry · Food Industry ·
Synthesis reagent
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| Website : |
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| Synonyms : |
Met, (S)-2-Amino-4-(Methylmercapto) Butyric Acid, (S)-2-Amino-4-(Methylthio) Butyric Acid, C5H11NO2S |
| Specifications
: |
| Specifications |
|
| Assay (Perchl. Ac.) calc. a.d.s. |
99,0-101,0 % |
| Identity according to Pharmacopoeias |
p/t. |
| Specific rotation [a]20/D c=2 (in HCl) calc. a.d.s. |
+22,5 to +24,0° |
| Specific rotation [a]25/D c=2 (in HCl) calc. a.d.s. |
+22,4 to +24,7° |
| pH 2,5% solution |
5,5-6,5 |
| pH 1% solution |
5,6-6,1 |
| T.L.C. |
p/t. |
MAXIMUM LIMIT OF IMPURITIES |
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| Appearance of solution |
p/t. |
| Loss on drying at 105°C |
0,3 % |
| Residue on ignition (as SO4) |
0,1 % |
| Organic volatile impurities |
p/t. |
| Ammonium (NH4) |
0,02 % |
| Chloride (Cl) |
0,02 % |
| Sulphate (SO4) |
0,03 % |
| Heavy metals (as Pb) |
0,001 % |
| Fe |
0,001 % | |
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Weight |
Description |
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| GRR
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