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

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L-Histidine base (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 %§a20°C/D; 11 %, HCl 120 g/L; calc. on dried subst.@+11.4° - +12.4°§a25°C/D; 11 %, 6 M HCl; calc. on dried subst.@+12.6° - +14.0°§Appearance of solution@passes test§Identity@passes test§pH (2 %; H2O; 25°C)@7.0 - 8.5§Sulfated ash@max. 0.1 %§Loss on drying (3 h; 105°C)@max. 0.2 %§Heavy metals (as Pb)@max. 0.0015 %§Ammonium@max. 0.02 %§Chloride@max. 0.02 %§Sulfate@max. 0.03 %§Fe@max. 0.001 %§Ninhydrin positive substances (HPLC)@§Each individual impurity@max. 0.2 %§Total impurities@max. 0.5 %§Ninhydrin positive substances (TLC)@§Each individual impurity@max. 0.5 %§Total impurities@max. 2 %