Histamine Dihydrochloride

Histamine Dihydrochloride  specification:

Item	Specifications	Results
Appearance	White crystalline powder	White crystalline powder
Purity	98.5~101.0%	99.8%
PH	2.85-3.60	3.52
Histidine（TLC）	Not be detected	Passed
Solubility	Clearly	Passed
Loss on drying	≤0.50%	0.25%
As	≤10ppm	6ppm
SO4	≤0.02%	0.015%
Pb	≤10ppm	7ppm