L-Cysteine Hydrochloride 1-hydrate (Ph. Eur., USP) pure, pharma grade
Content: 1 KGM
Physical Description:
Solid
• All amino acids from AppliChem are of non-animal origin!
Specification: Assay (titr., calc. on dried subst.): 98.5 - 101.0 %
a25°C/D; 8 %, 6 M HCl: +5.7° - +6.8°
Appearance of solution: passes test
Identity: passes test
Heavy metals (as Pb):?max. 0.0015 %
Sulfated ash:?max. 0.1 %
Loss on drying: 8.0 - 12.0 %
a20°C/D; 8 %, HCl 250 g/L, calc. on dried subst.: +5.5° - +7.0°
Ammonium:?max. 0.02 %
Sulfate:?max. 0.03 %
Fe:?max. 0.002 %
Ninhydrin positive substances (HPLC):
Any other ninhydrin-pos. Subst.:?max. 0.2 %
Total impurities:?max. 1.0 %
Cystine:?max. 0.5 %
Ninhydrin positive substances (TLC):
Each individual impurity:?max. 0.5 %
Total impurities:?max. 2 %