Description
Technical Parameters
Product Brief Introduction
Product name: Sodium Selenite Pentahydrate
CAS: 26970-82-1
MF: H10Na2O8Se
MW: 263.01
Product Specification
|
Appearance |
White crystalline powder, hygroscopic |
|
Identification |
Dissolve 50mg in 5ml of a mixture of equal volumes of dilute hydrochloric acid R and water R and heat to boiling. Add 0.05g of ascorbic acid R; a red precipitate is formed which may become black. |
|
Solubility |
Freely soluble in water, practically insoluble in ethanol |
|
Appearance of Solution |
Clear and colorless |
|
PH |
9.8-10.8 |
|
Chloride (Cl-) |
≤ 0.005% |
|
Selenate and Sulphate |
≤ 0.03% |
|
Iron |
≤ 0.005% |
|
Selenium |
≥ 29.72% |
|
Content |
98.5%~101.5% |
