Sodium Sulphate Anhydrous
molecular formula |
Na2SO4 |
specification |
Na2SO4 |
Ca & Mg(Mg) |
Fe |
moisture |
water insolubles |
white degree |
PH value |
chloride |
H2O |
mesh 250 µm |
99%min |
0.15%max |
0.002%max |
0.2%max |
0.05%max |
80%min |
6 - 8 |
0.35%max |
0.2%max |
10%max |
properties |
A fine, white, crystalline, granular powder of high purity; somewhat hygroscopic when exposed to air; soluble in water to give an almost neutral solution.Soluble in Glycerin. Easy to absorbing the moisture.
specific gravity 2.7
melting point 884¡ãC
solubility in water (approx): 16% by wt as Na2SO4 at 20¡ãC (68¡ãF) |
use |
used as mordant, laxative and bulk additive in dyestuff and Textiles industry. As also in glass, papermaking and detergent materials, etc. |
producing methodology |
DISSOLVING - EVAPORATION PROCESS Natural Gauber's salt will be dissolved, evaporated and dehydrated to get the end product. |
storage and handling |
store in dry place, close lids tightly and keep away from moisture. And the lightly handle get rid of the bag torn for the moisturized. |
packing |
25kgs P.P bags X 40 bags in 1000kgs/jumbo bag.
1,000 KGS JUMBO BAG.
25kgs or 50kgs plastic woven bags lined with one layer polythene bag
|
run of mill specification |
chemical |
average % |
range |
sodium sulphate (Na2 SO4)
|
99.5 % |
98.7-99.9 % |
|
32.2 % |
-- |
|
3 ppm |
1- 7 ppm |
|
0.07 % |
0.03-0.10% |
|
0.08 % |
0.04-0.13% |
free caustic alkalinity (as NaOH)
|
0.13 % |
0.05-0.35% |
|
104 |
40-300 |
sieve analysis |
US standard sieve No. |
% retained on average |
sieve range |
20 |
0.2 |
0.1-0.5 |
40 |
0.5 |
0.2-1.1 |
60 |
6.0 |
2.0-20.0 |
80 |
29.0 |
18.0-42.0 |
100 |
27.0 |
18.0-38.0 |
200 |
31.0 |
16.0-40.0 |
fines passing all sieves |
5.0 |
2.0-12.0 |
bulk density |
72 - 75 lb/ft3 |
* The Klett value is a measure of the whiteness of the product. It is obtained by measuring
the colour of an aqueous solution (approx. 15% Na2 SO4 dissolved in pure distilled water),
using a Klett Summerston photoelectric colourimeter. The lower the Klett reading, the whiter
is the product.
|
