Item
GB1902-94 version
BP98 version
China
pharmacopoeia
2000 version
Content(base on C7H5NaO2 dry basis)%
99.0
99.0-100.5
99.0
Drying loss %
1.5
2.0
1.5
Dissolve
Meet the stipulation
Meet the stipulation
/
Transparency and color
/
Meet the stipulation
/
Alkalinity acidity
Meet the stipulation
Meet the stipulation
Meet the
stipulation
Cchloride (base on Cl)
500PPm
200PPm
/
Chloride(base on Cl)
/
300PPm
/
Heavy metal(base on Pb)
10PPm
10PPm
10PPm
As(base on As)
2PPm
/
5PPm
Sulfate (base on SO4)
1000PPm
/
/
Readily oxidizable substance
Passed the test
/
/
o-benzene tricarbonic acid
Passed the test
/
/