L-Cysteine (DAB) pure, pharma grade

L-Cysteine (DAB) 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.): 98.0 - 101.0 %
a20°C/D; 12 %, HCl, calc. on dried subst.: +8.0° - +9.5°
Appearance of solution: passes test
Identity: passes test
pH (2.5 %; H2O): 4.5 - 6.0
Heavy metals (as Pb):?max. 0.001 %
Sulfated ash:?max. 0.1 %
Loss on drying:?max. 0.5 %
Ninhydrin positive substances:?max. 0.5 %
Ammonium:?max. 0.02 %
Chloride:?max. 0.04 %
Sulfate:?max. 0.03 %
Fe:?max. 0.002 %