| ≥1 piece |
|
Test Item
|
BP98/USP/E331 Standard
|
Test Result
|
|
Appearance
|
Colorless or white crystal powder
|
Colorless or white crystal powder
|
|
Content(Na 3 C 6 H 5 O 7 .2H 2 O)
|
99.0%--101.0%
|
99.86%
|
|
Loss on drying
|
11.0-13.0%
|
12.25%
|
|
Acidity and Alkalinity
|
Accord with the test
|
Accord with the test
|
|
Sulfates
|
≤0.015%
|
???0.015%
|
|
Chloride
|
≤0.005%
|
???0.005%
|
|
Oxalate
|
≤0.03%
|
???0.03%
|
|
Heavy Metal(as pb)
|
≤0.0005%
|
???0.0005%
|
|
As
|
≤0.0001%
|
???0.0001%
|
|
Lead(Pb)
|
≤0.0001%
|
???0.0001%
|
|
Mercury(Hg)
|
≤0.0001%
|
???0.0001%
|
|
PH value
|
7.5-9.0
|
8.88
|
|
Clarity & colour of solution
|
Accord with the test
|
Accord with the test
|
|
Easy carbonify substance
|
Accord with the test
|
Accord with the test
|
|
Summing- up
|
In compliance with the standard of BP98/USP/E331
|
|
|
Test Item
|
BP98/USP/E331 Standard
|
Test Result
|
|
Appearance
|
Colorless or white crystal powder
|
Colorless or white crystal powder
|
|
Content(Na 3 C 6 H 5 O 7 .2H 2 O)
|
99.0%--101.0%
|
99.86%
|
|
Loss on drying
|
||