Pharmaceutical ground Calcium Carbonate
1．Pharmaceutical grade of Calcium Carbonate has high CaCO3 content and low impurities, some specification are superior to those in USP26-28,EP2002,BP2002 and CP2000. In addition some specifications also can be added according to the customer’s demanding, such as particle size and bulk density, to meet special requests.
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No.
|
Item
|
Specification
|
|
1
|
CaCO3 content (dry basis)
|
98.0-100.5
|
|
2
|
Iron (as Fe2O3 ) % ≤
|
0.04
|
|
3
|
Mercury % ≤
|
0.00005
|
|
4
|
Magnesium and alkali salts % ≤
|
1.0
|
|
5
|
Heavy metal % ≤
|
0.002
|
|
6
|
Loss on drying % ≤
|
0.5
|
|
7
|
Identification(carbonate)
|
Effervesce with acids,evolving a colorless gas that when passed into Ca(OH)2,produces a white precipitate.
|
|
8
|
Identification(calcium salt)
|
Moistened with HCL,impact a transient yellowish red color to a nonluminous flame
|
|
9
|
Acid insoluble % ≤
|
0.2
|
|
10
|
Fluoride % ≤
|
0.005
|
|
11
|
Arsentic % ≤
|
0.0003
|
|
12
|
Barium
|
No green flame
|
|
13
|
Lead % ≤
|
0.0003
|