产品描述
  Characters	White crystalline powder 
Purity (on dry base) %	98.0-102.0
Acidity (PH)	4.0-7.0
Melting point (°C) 	96-99
Sulfate (SO42-)	=<300 ppm
Residue on Ignition (%)	=<0.10 
Completeness of solution	Clear and transparent 
Organic volatile impurities	=<0.5
Loss on Drying (%)	=<0.5