Certificate of
Analysis for
DL-Methionine,
USP23
|
Commodity
Name:
DL-Methionine |
|
Standard:
U |
|
|
|
Date: Mar 28, 2001 |
Item |
Limit(Pharma)
|
Limit(Food)
|
Result |
State of Solution |
98% Min |
/ |
99% |
|
Chloride (Cl) |
0.02% Max |
0.02% Max |
19.3 |
|
Ammonium (NH4) |
0.02% Max |
/ |
<0.02% |
|
Sulfate (SO4) |
0.020% Max |
/ |
<0.020% |
|
Iron (Fe) |
10ppm Max |
/ |
4mg/kg |
|
Heavy Metals (Pb) |
10ppm Max |
10ppm Max |
3mg/kg |
|
Arsenic (As2O3) |
1ppm Max |
1ppm Max |
<1mg/kg |
|
Loss on Drying |
0.3% Max |
0.5% Max |
0.2% |
|
Residue in Ignition |
0.1% Max |
0.1% Max |
<0.1% |
|
Assay |
99% to 100.5% |
98.5% to 100% |
99.8% |
|
PH |
5.6 to 6.1 |
5.6 to 6.1 |
5.8 |
|
Chromatographic Analysis(层析) |
Conforms |
Conforms |
Qualified |
|
Conclusion |
Conforms to USP-23 |
||
Analyst: Inspector: