Sodium Citrate Extra Pure Grade (IP Passing)
Specifications
| Parameters |
Standards |
| Description |
A white Crystalline Powder |
| Solubility |
Freely soluble in water |
| Identification |
Complies |
| Acidity &
Alkalinity |
0.20 Ml of 0.05 M H2SO4 |
| Clarity & Colour of Solution |
A 10% solution in water is clear
and colourless. |
| Max. Limits of Impurities |
| Arsenic |
<2 ppm |
| Heavy Metals |
<10 ppm |
| Chloride |
<100 ppm |
| Oxalate |
<300 ppm |
| Sulphate |
<150 ppm |
| Tartrate |
Complies |
| Water |
12.10 % w/w |
| Assay (on anhydrous basis) |
99.44 % w/w |
Ferric
Ammonium Citrate -28% Specifications
| Test |
Specifications |
| Appearance |
Thin, Transparent, dark red
Brownish red powder with astringent taste, odorless, deliquescent in
moist air and affected by light. |
| Assay |
NMT 28% and NMT 29.5% |
| pH of 5% Aqueous Solution |
6.0 - 8.0 |
| Arsenic (As) |
2 ppm Maximum |
| Lead (Pb) |
10 ppm Maximum |
| Zinc (Zn) |
10 ppm Maximum |
| Free Ferric Compounds |
No blue precipitate appears with
potassium Ferro cyanide solution. |
| Chloride (Cl) |
0.25% Maximum |
| Sulphate (SO4) |
0.30% Maximum |
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