molecular formula: cacl2·2h2o
molecular weight: 147.014
cas no: 10035-04-8
properties: white flake, particle, lump or powder. relative density is 1.85. easily soluble in water and ethyl alcohol.
uses: as analytical reagent, industrial refrigerant, motor vehicle antifreeze fluid, snow-dissolved agent, fire extinguishing agent and adhesive.
standard: maximum assay of impurities is in %
specification/item |
analytically pure-ar
|
chemically pure-cp
|
high pure
|
food grade
|
assay(cacl2)
|
≥74
(cacl2)
|
≥74
(cacl2)
|
97.0~103.0
(cacl2·2h2o)
|
99.0~105
(cacl2·2h2o)
|
alkalinity (calculated as cacoh)
|
≤0.02
|
≤0.04
|
-
|
-
|
iron (fe)
|
≤0.001
|
≤0.002
|
-
|
≤0.002
|
magnesium and alkali metal(as sulfate)
|
≤0.3
|
≤0.6
|
-
|
4
|
insoluble matter and ammonia precipitate
|
≤0.015
|
≤0.03
|
-
|
≤0.1
|
sulfate (caso4)
|
-
|
-
|
≤0.02
|
-
|
arsenic (as)
|
-
|
-
|
≤0.000 2
|
≤0.000 3
|
heavy metal (pb)
|
-
|
-
|
≤0.001
|
≤0.002
|
fluoride (f)
|
-
|
-
|
-
|
≤0.004
|
lead (pb)
|
-
|
-
|
-
|
≤0.001
|
packing: woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 25kg.
|