Item	1 st  grade
Nh4CL content (on dry basis),%≥	99.5
Moisture content,%≤	0.7
Remnant of combustion%≤	0.4
Iron(Fe),% ≤	0.001
Heavy metal (as Ph) content,%	0.0005
Sulphate content,% ≤	0.02
PH Value(200g/L,25)	4.0-5.8

2) Property : white powdered crystals, specific gravity 1.532(17), easily absorbs moisture, and forming a cake, soluble in water, and the solubility varies as the temperature increases, sublimes 340. It appears strong corrosiveness.

Uses : used in cell, oil refining, electroplate, ore dressing precision casting, tanning pharmaceutics industries, etc

Packing : with outer polypropylene woven bag, lined with plastic film bag, net weight: 25kg/bag