molecular formula: ch3coonh4
molecular weight: 77.08
cas no : 631-61-8
properties: colorless or white lumpy crystal with a little acetic acid odor. relative density is 1.17 and melting point is 114℃. very easily soluble in water, easily soluble in ethyl alcohol, slightly solbule in acetone.
standard: maximum assay of impurities is in %
specification
item |
analytically pure-ar
|
chemically pure-cp
|
high purity
|
industrial grade
|
assay(ch3coonh4)
|
≥98.0
|
≥97.0
|
97.5~101.0
|
≥98.0
|
ph value
|
—
|
—
|
6.7-7.3
|
qualified
|
clarity test
|
qualified
|
qualified
|
qualified
|
|
water insoluble matter
|
≤0.005
|
≤0.01
|
0.05
|
|
ignition residue (sulfate)
|
≤0.005
|
≤0.01
|
—
|
|
chloride(cl)
|
≤0.005
|
≤0.001
|
≤0.005
|
|
sulfate(so4)
|
≤0.002
|
≤0.005
|
≤0.01
|
≤0.01
|
nitrate(no3)
|
≤0.001
|
-
|
-
|
|
phosphate(po4)
|
≤0.0005
|
-
|
-
|
|
magnesium (mg)
|
≤0.0004
|
≤0.001
|
-
|
|
calcium (ca)
|
≤0.001
|
≤0.002
|
-
|
|
iron (fe)
|
≤0.0005
|
≤0.001
|
≤0.0005
|
≤0.005
|
heavy metal (pb)
|
≤0.0005
|
≤0.001
|
≤0.0005
|
≤0.005
|
potassium permanganate-reducing material(hcooh)
|
≤0.01
|
≤0.01
|
-
|
|
uses: as analytical reagent, chromatograph analysis reagent, buffer agent, clinical reagent, and etc.
packing: woven bag lined with plastic bag, kraft bag, or fiber drum, net weight is 25kg.
|