技 术 指 标 |
white powder |
food grade |
||
specifications |
standard values |
results of inspection |
||
( (nh4)2hpo4计) main content((nh4)2hpo4) |
% |
≥98.0 |
99.10 |
|
p2o5 phosp horus pentoxide |
% |
≥53.0 |
53.4 |
|
(以n计) nitrogen as n |
% |
≥20.8 |
21.0 |
|
(以pb计) heavy metala, as pb |
% |
≤0.001 |
0.001 |
|
(以f计) fluoride,as f |
% |
≤0.002 |
0.001 |
|
|
ph 值( 1% ) ph of 1% solution |
|
7.8-8.2 |
8.0 |
|
water insoluble |
% |
≤0.0003 |
0.0001 |
|
h2o) moisture |
% |
≤0.15 |
0.1 |