CHARACTERISTIC:
It is white crystal or crystalline powder, melting at 1056℃,soluble in water, steady in air. Its hydration is Na2SeO4 •10H2O, efflorescent in dry air. It will turn to anhydrous one by heating to 40℃.
SPECIFICATIONS:
Na2SeO4 ≥98%
Se ≥41%
Pb ≤ 20ppm
As ≤ 5ppm
Fe ≤ 10ppm
Cu ≤ 10ppm
Cd ≤ 5ppm
Hg ≤ 1ppm
Ni ≤ 5ppm
Te ≤50ppm
Moisture ≤0.5 %
Selenite ≤ 0.5 %
Insoluble Residue≤ 0.1%
USES:
Used for fertilizer additive. To improve the selenium element content of soil.
Used for feed additive. To poultry it can improve the rate of laying and hatching successfully. To livestock it can improve the using of nutriments and breeding ability.
Used in medicine line. Selenium and its compound are hazardous, but very little quantity is one of the necessary nutrition for body. Selenium has the anti-senescence function.