USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
product index: q/zxh003-2005
item \grade
|
first grade
|
top grade
|
high pure
|
appearance
|
white crystal
|
white crystal
|
white crystal
|
content
|
≥98%
|
≥99%
|
≥99%
|
moisture
|
≤0.5%
|
≤0.3%
|
≤0.3%
|
sulfate
|
≤0.008%
|
≤0.003%
|
|
heavy metal
|
≤0.0003%
|
||
iron salts
|
≤0.0005%
|
||
residue on ignition
|
≤0.02%
|
uses: this product is mainly used as reducer and developer. during organic synthesis, it can be employed to make oxime and material for the compound of anticancer medicine(hydroxyurea), sulphonamide (sulfamethoxazole) and pesticide(medorwy). it is also widely adopted to electroanalysis as depolarizer and the synthetic rubber industry as non-coloring short-term stopper.