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molecular formula: cacl2
molecular weight: 110.98
cas no:10043-52-4
properties: white cubic crystal or powder. relative density is 2.15, melting point is 775℃, boiling point is 1935.5℃. easily soluble in water and ethyl alchohol.
uses: chemical reagent, pharmaceutical raw material, food additive, dehydrant, sizing agent, and water purifier.
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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food grade
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assay(cacl2) /%
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≥98.0
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≥98.0
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≥98.0
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≥96.0
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insoluble matter and ammonium hydroxide precipitate
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≤0.015
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≤0.03
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qualified
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－
|
|
free alkali [ca(oh)2]
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≤0.020
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≤0.04
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－
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－
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phosphate (po4)
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≤0.003
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≤0.003
|
－
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－
|
|
sulfate (so4)
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≤0.020
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≤0.02
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≤0.03
|
|
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nitrate (no3)
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qualified
|
qualified
|
－
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－
|
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barium (ba)
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qualified
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qualified
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－
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－
|
|
heavy metal (pb)
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≤0.001
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≤0.002
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≤0.001
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≤0.001
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iron (fe)
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≤0.001
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≤0.002
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－
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≤0.002
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zinc (zn)
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≤0.01
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≤0.01
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－
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≤0.02
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magnesium and alkali metal(as sulfate)
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≤0.30
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≤0.60
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≤0.8
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|
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arsenic (as)
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≤0.0003
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≤0.0003
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≤0.0003
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≤0.0003
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lead (pb)
|
－
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－
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≤0.001
|
－
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packing: woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 25kg.
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