|
Molecular formula: NH4Cl
Molecular weight: 53.49
CAS NO: 12125-02-9
Properties: colorless cubic crystal or white crystal with salty and slightly bitter taste. Relative density is 1.527. Soluble in water and grycerin, slightly soluble in ethyl alcohol.
Uses: in analytical reagent, welding of metals, electroplating, tanning, dry battery, and etc.
Standard: maximum assay of impurities is in %
| Specification/item |
Analytically pure-AR
|
Chemically pure-CP
|
High pure
|
|
Assay (NH4Cl) /%
|
≥99.5
|
≥98.5
|
≥99.0
|
|
PH(50g/L solution 25℃)
|
4.5~5.5
|
4.5~5.5
|
－
|
|
Clarity test
|
Qualified
|
Qualified
|
－
|
|
Water insoluble matter
|
≤0.005
|
≤0.01
|
－
|
|
Ignition residue (as sulfate)
|
≤0.02
|
≤0.05
|
≤ 0.1
|
|
Sulfate (SO4)
|
≤0.005
|
≤0.005
|
≤ 0.02
|
|
Phosphate (PO4)
|
≤0.0005
|
≤0.001
|
≤0.005
|
|
Sodium (Na)
|
≤0.005
|
－
|
－
|
|
Magnesium (Mg)
|
≤0.001
|
≤0.002
|
－
|
|
Potassium (K)
|
≤0.005
|
－
|
－
|
|
Calcium (Ca)
|
≤0.001
|
≤0.002
|
≤0.005
|
|
Iron (Fe)
|
≤0.0005
|
≤0.001
|
≤0.005
|
|
Heavy metal (Pb)
|
－
|
－
|
≤0.001
|
|
Arsenic (As)
|
－
|
－
|
≤0.0005
|
|
Drying loss
|
－
|
－
|
≤0.5
|
Packing: woven bag lined with plastic bag, kraft bag and fiber drum, net weight is 25kg.
|
