99% (nh4)2so4 7783-20-2
molecular formula: (nh4)2so4
appearance:
colorless crystal
properties:
colorless crystalline or translucence powder. the relative density 1.769. hot to 100 ℃ began to decompose into ammonia and acid hydrogen amines. soluble in water, insoluble in ethanol and acetone.
use:
analytics reagents. as the support point electrochemical analysis and solution quality. also used in the microbiological media, ammonium salt preparation.
99% (nh4)2so4 7783-20-2
molecular formula: (nh4)2so4
appearance:
colorless crystal
properties:
colorless crystalline or translucence powder. the relative density 1.769. hot to 100 ℃ began to decompose into ammonia and acid hydrogen amines. soluble in water, insoluble in ethanol and acetone.
use:
analytics reagents. as the support point electrochemical analysis and solution quality. also used in the microbiological media, ammonium salt preparation.
details:
test item |
specification |
|
ar |
cp |
|
appearance |
conform |
conform |
assay /% |
≥99.0 |
≥99.0 |
clarify degrees test |
conform |
conform |
water insoluble/% |
≤0.002 |
≤0.01 |
burning residua /% |
≤0.01 |
≤0.05 |
chloride (cl)/% |
≤0.0005 |
≤0.001 |
nitrate (no3)/% |
≤0.001 |
≤0.005 |
phosphate (po4)/% |
≤0.0005 |
≤0.002 |
arsenic (as)/% |
≤0.00002 |
≤0.0002 |
calcium (ca) /% |
≤0.005 |
|
ferric (fe)/% |
≤0.0002 |
≤0.0005 |
heavy metal (pb)/% |
≤0.0005 |
≤0.002 |