| Cas
number
:- |
6381
- 59 - 5
|
| Composition
:- |
C4H4KNaO8
-74.47%
H20 - 25.53%
K - 13.85%
C4H4O8 -
52.47%
|
| Description
:- |
Colorless
crystals or a white crystalline powder
slightly inflorescent
|
| Melting
point :- |
About
75oc.
|
| Solubility
:- |
In
water 26 gm in 100 ml at 0o
111 gm in 100 ml at 25oc
Virtually insoluble in ethanol.
|
| Specific
Rotation :- |
|
| Requirements
:- |
Assay
99 - 102%
pH OF 5% solution 6.0 - 8.5 at 25oc
|
Maximum
Limits of Impurities:-
| Water insoluble
matter |
0.003% |
| Chloride(Cl) |
0.0005% |
| Phosphate(PO4) |
0.001% |
| Sulphate(SO4) |
0.005% |
| Ammonium(NH4) |
0.002% |
| Calcium(Ca) |
0.004% |
| Copper(Cu) |
0.0002% |
| Iron(Fe) |
0.0005% |
| Lead(Pb) |
0.0002% |
| Magnesium(Mg) |
0.002% |
| Potassium(K) |
0.005% |
| Reducing Substances |
Passes test |
|
