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.