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
|
chemically pure-cp
|
high pure
|
food grade
|
assay(cacl2) /%
|
≥98.0
|
≥98.0
|
≥98.0
|
≥96.0
|
insoluble matter and ammonium hydroxide precipitate
|
≤0.015
|
≤0.03
|
qualified
|
-
|
free alkali [ca(oh)2]
|
≤0.020
|
≤0.04
|
-
|
-
|
phosphate (po4)
|
≤0.003
|
≤0.003
|
-
|
-
|
sulfate (so4)
|
≤0.020
|
≤0.02
|
≤0.03
|
|
nitrate (no3)
|
qualified
|
qualified
|
-
|
-
|
barium (ba)
|
qualified
|
qualified
|
-
|
-
|
heavy metal (pb)
|
≤0.001
|
≤0.002
|
≤0.001
|
≤0.001
|
iron (fe)
|
≤0.001
|
≤0.002
|
-
|
≤0.002
|
zinc (zn)
|
≤0.01
|
≤0.01
|
-
|
≤0.02
|
magnesium and alkali metal(as sulfate)
|
≤0.30
|
≤0.60
|
≤0.8
|
|
arsenic (as)
|
≤0.0003
|
≤0.0003
|
≤0.0003
|
≤0.0003
|
lead (pb)
|
-
|
-
|
≤0.001
|
-
|
packing: woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 25kg.
|