L-Methionine (Ph. Eur., USP) pure, pharma grade

L-Methionine (Ph. Eur., USP) pure, pharma grade
Content: 100 GRM
Physical Description:
Solid
• All amino acids from AppliChem are of non-animal origin!
Specification: Assay (titr.): 99.0 - 101.0 %
a25°C/D; 2 %, 6 M HCl: +22.4° - +24.7°
Appearance of solution: passes test
Identity: passes test
pH (1 %; H2O): 5.6 - 6.1
Sulfated ash:?max. 0.1 %
Loss on drying (3 h; 105°C):?max. 0.3 %
a20°C/D; 2 %, 250 g/L HCl (calc. on dried subst.): +22.5° - +24.0°
pH (2.5 %; H2O): 5.5 - 6.5
Ammonium:?max. 0.02 %
Chloride:?max. 0.02 %
Sulfate:?max. 0.03 %
Fe:?max. 0.001 %
Related substances (Ph. Eur.):
Each individual impurity:?max. 0.1 %
Total impurities:?max. 0.3 %
Related substances (USP):
Methionine sulfoxide:?max. 0.1 %
N-Acetyl-D,L- methionine:?max. 0.2 %
Any unspecified impurity:?max. 0.1 %
Total unspecified impurities:?max. 0.30 %