molecular formula: ch3cook
molecular weight: 98.15
cas no:127-08-2
properties: colorless or white crystalline powder. relative density is 1.57 and melting point is 292℃. easily soluble in water, soluble in methyl alcohol, ethyl alcohol and liquid ammonia.
standard: maximum assay of impurities is in %
specifications/item |
analytically pure-ar
|
chemically pure-cp
|
high purity
|
assay(ch3cook)
|
≥99.0
|
≥98.0
|
≥98.0
|
clarity test
|
qualified
|
qualified
|
-
|
water insoluble matter
|
≤0.005
|
≤0.01
|
-
|
ph value (5%, water)
|
7.5~9.5
|
7.5~9.5
|
7.5~9.5
|
chloride(cl)
|
≤0.002
|
≤0.005
|
≤0.01
|
phosphate(po4)
|
≤0.002
|
≤0.005
|
-
|
sulfate(so4)
|
≤0.002
|
≤0.005
|
≤0.01
|
calcium (ca)
|
≤0.005
|
≤0.005
|
-
|
iron (fe)
|
≤0.000 5
|
≤0.001
|
≤0.01
|
magnesium (mg)
|
≤0.000 5
|
≤0.001
|
≤0.01
|
sodium (na)
|
≤0.02
|
≤0.10
|
-
|
heavy metal (pb)
|
≤0.000 5
|
≤0.001
|
≤0.000 5
|
potassium permanganate-reducing material
|
qualified
|
qualified
|
-
|
arsenic (as)
|
-
|
-
|
≤0.0005
|
uses: as analytical reagent, ph regulator, drying agent, buffer agent, diuretic, softener for fabric and paper, and etc.
packing: woven bag lined with plastic bag, kraft bag and fiber drum, net weight is 25kg.
|