POTASH ALUM
REFERENCE No: 135 – 11 – 010 -00.
A. FORMULA: AlK(SO4)2.12H2O. F.Wt. : 474.39
B. SPECIFICATIONS
1. |
Appearance |
Colourless free flowing crystals free from lumps and external visible impurities. |
2. |
Clarity of 5 % aqueous solution |
Clear and colourless, free from any suspended matter. |
3. |
pH of 5 % aqueous solution |
3 – 3.3 |
4. |
Assay (Min) |
99 % |
5. |
Iron as Fe (Max) |
0.01 % |
6. |
Insoluble matter in water |
0.015 % |
7. |
Practical test |
To pass test |
C. QUANTITY OF SAMPLE REQUIRED FOR TEST : 2 kgs
D. MODE OF PACKING
Packed in double polythene bags each 200 gauge, heat sealed separately and kept in a fiber drum, top covered and sealed. The final packing should withstand hazards in transit. All packaging in direct contact with contents shall be photographically inert.