molecular formula: kcl
molecular weight: 74.55
cas no:7447-40-7
properties: white cubic crystalline powder. relative density is 1.988 and melting point is 771℃. soluble in water, insoluble in diethyl ether and acetone.
uses: as chemical reagent and electrolyte supplement. it can be used in preparing injection and diuretics.
standard: maximum assay of impurities is in %
specification/item |
analytically pure-ar
|
chemically pure-cp
|
high pure
|
assay (kcl) /%
|
≥99.5
|
≥99.5
|
≥99.5
|
ph(50g/l solution,25℃)
|
5.0~8.0
|
5.0~8.0
|
-
|
clarity test
|
qualified
|
qualified
|
-
|
water insoluble matter
|
≤0.005
|
≤0.02
|
-
|
iodide (i)
|
≤0.002
|
≤0.01
|
-
|
bromide(br)
|
≤0.02
|
≤0.05
|
-
|
sulfate (so4)
|
≤0.002
|
≤0.005
|
≤0.01
|
total nitrogen (n)
|
≤0.001
|
≤0.001
|
-
|
phosphate (po4)
|
≤0.0005
|
≤0.002
|
-
|
sodium (na)
|
≤0.02
|
≤0.1
|
-
|
magnesium (mg)
|
≤0.001
|
≤0.002
|
-
|
calcium (ca)
|
≤0.003
|
≤0.01
|
-
|
iron (fe)
|
≤0.0003
|
≤0.0005
|
≤0.0005
|
barium (ba)
|
≤0.001
|
≤0.001
|
-
|
heavy metal (pb)
|
≤0.0005
|
≤0.001
|
≤0.0005
|
drying loss
|
-
|
-
|
1.0
|
arsenic (as)
|
-
|
-
|
≤0.0001
|
packing, storage and transportation: woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 25kg.
|