L-Cystine (Ph. Eur.) pure, pharma grade

L-Cystine (Ph. Eur.) pure, pharma grade
Content: 100 GRM
Physical Description:
Solid
• All amino acids from AppliChem are of non-animal origin!
Specification: Assay (titr., calc. on dried subst.): 98.5 - 101.0 %
a20°C/D; 2 %, 1 M HCl, calc. on dried subst.: -224° - -218°
Appearance of solution: passes test
Identity: passes test
Sulfated ash:?max. 0.1 %
Loss on drying:?max. 0.5 %
Ammonium:?max. 0.02 %
Chloride:?max. 0.02 %
Sulfate:?max. 0.03 %
Fe:?max. 0.001 %
Ninhydrin positive substances (HPLC):
Any other ninhydrin-pos. Subst.:?max. 0.2 %
Total impurities:?max. 0.5 %