name:ammonium dihydrogen phosphate
cas: 7722-76-1
appearance:white crystal
application:it is used as a buffer and culture agent in industry; as a high-efficiency phosphorus and potassium compound fertilizer in agriculture; as a food improvement additive in food grade.
description |
white powder |
complies |
identification |
ir |
complies |
|
hplc |
complies |
heavy metal |
≤10ppm |
5ppm |
pb |
≤3ppm |
1.5ppm |
hg |
≤0.1ppm |
0.05ppm |
cd |
≤1ppm |
0.2ppm |
loss on drying |
≤0.5% |
0.12 |
residue on lgnition |
≤0.1% |
0.03 |
single impurity |
≤0.5% |
0.12 |
total impurity |
≤1.0% |
0.29 |
total bacteria |
≤1000cfu/g |
<1000 |
yeast and mould |
≤100 cfu/g |
<000 |
e.coli/25g |
absent |
absent |
salmonella/25g |
absent |
absent |
assay |
≥99.0% |
99.4% |
conclusion |
conforms with usp/ep standards |