Sodium Selenite Pentahydrate BP
Sodium selenite is the disodium salt of selenious acid. It is an inorganic compound with the formula Na2SeO3. This salt is a colorless solid. The pentahydrate Na2SeO3.5H2O is the most common water-soluble selenium compound.
Used as an ingredient in dietary suppliments. Approved as a selenium supplement to animal diets; the most common form is sodium selenite for pet foods
Chemical Name: Sodium Selenite Pentahydrate
Mol. Formula: Na2SeO3.5H2O
Mol. Weight: 263.0g/mol
CAS No.: 26970-82-1
|Description||It occurs as a white or almost white crystalline powder, hygroscopic.|
(a)Specified Test. A red precipitate is formed which may become black
(b)Specified Test. The solution remains clear
(c)It gives reactions of sodium
(d) It complies with the limits of assay
|Solubility||Freely soluble in water, practically insoluble in ethanol|
|Appearance of Solution||Solution S is clear and colorless|
|pH||Between 9.8 and 10.8|
|Chlorides||Not more than 50 ppm|
|Sulfates and Selenates||Not more than 300 ppm|
|Iron||Not more than 50 ppm|
|Assay||Not less than 98.5% and not more than 101.5%|
Shelf life, Storage and Packing
It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.
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