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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
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chemically pure-cp
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high pure
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assay (nh4cl) /%
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≥99.5
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≥98.5
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≥99.0
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ph(50g/l solution 25℃)
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4.5~5.5
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4.5~5.5
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－
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clarity test
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qualified
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qualified
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－
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water insoluble matter
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≤0.005
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≤0.01
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－
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ignition residue (as sulfate)
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≤0.02
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≤0.05
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≤ 0.1
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sulfate (so4)
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≤0.005
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≤0.005
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≤ 0.02
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phosphate (po4)
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≤0.0005
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≤0.001
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≤0.005
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sodium (na)
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≤0.005
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－
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－
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magnesium (mg)
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≤0.001
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≤0.002
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－
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potassium (k)
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≤0.005
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－
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－
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calcium (ca)
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≤0.001
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≤0.002
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≤0.005
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iron (fe)
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≤0.0005
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≤0.001
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≤0.005
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heavy metal (pb)
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－
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－
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≤0.001
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arsenic (as)
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－
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－
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≤0.0005
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drying loss
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－
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－
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≤0.5
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packing: woven bag lined with plastic bag, kraft bag and fiber drum, net weight is 25kg.
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