≥1 piece |
Items
|
Unit
|
Standard
|
Ammonium chloride(NH 4 Cl)
|
%
|
≥99.5
|
Loss on drying
|
%
|
≤0.7
|
Residue on Ignition
|
%
|
≤0.4
|
As
|
mg/kg
|
1
|
Cd
|
mg/kg
|
1
|
Heavy metal (Pb)
|
mg/kg
|
≤5
|
Fe
|
mg/kg
|
≤5
|
Barium salt of qualitative experiment
|
---
|
Clarification
|
PH
|
(200g/l solution 25 ℃ )
|
4.0~5.8
|