3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||172.95 g·mol−1|
|Melting point||decomposes at 710 °C|
|85 g/100 mL (20 °C)|
|Solubility||insoluble in alcohol, ethanol|
|EU classification||Very toxic (T+)|
Dangerous for the environment (N)
|R-phrases||R23, R28, R31, R43, R51/53|
|S-phrases||(S1/2), S28, S36/37, S45, S61|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Properties[change | change source]
Sodium selenite is a white solid. It dissolves in water. It is a weak oxidizing agent. It reacts with acids to make selenous acid. It can be oxidized by powerful oxidizing agents to make sodium selenate.
Preparation[change | change source]
- 2 NaOH + SeO2 → Na2SeO3 + H2O
Uses[change | change source]
Sodium selenite is used to add a pink color to glass. It is also used in some vitamin supplements.
Safety[change | change source]
Eating of any more than a very tiny amount would give selenium poisoning.