Substance profile
Sodium Selenite
Sodium Selenite is tetragonal prisms.
01 · Identification
What Sodium Selenite is
Sodium Selenite is tetragonal prisms. It melts at 710 °C, is practically insoluble in water.
Under the GHS it carries the signal word Danger.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H300 | Fatal if swallowed. |
| H331 | Toxic if inhaled. |
| H317 | May cause an allergic skin reaction. |
| H411 | Toxic to aquatic life with long lasting effects. |
Supplemental EU statements: EUH031
Precautionary statements: P260, P261, P270, P271, P272, P273, P280, P301, P304, P310, P313, P330, P333, P391, P501
03 · Physical and chemical properties
Sodium Selenite properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | Decomposes (NTP, 1992) | decomposes | CAMEO |
| Melting point | 710 °C (1310 °F) | DOE PAC | |
| 710 °C (1310 °F) | decomposes, decomposes | HSDB | |
| 710 °C (1310 °F) | decomposes | CAMEO | |
| Density | 3.1 g/cm³ | HSDB | |
| Solubility | Insoluble in alcohol | HSDB | |
| 89.8 g/100 g water | HSDB | ||
| greater than or equal to 100 mg/mL at 70.7 °F (NTP, 1992) | at 21.5 °C | CAMEO | |
| Vapor pressure | 0.001 mmHg | below this value, at 20 °C | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Sodium Selenite
Incompatible materials
Do not use metal and acid to reduce selenium compounds. This will produce toxic gaseous hydrogen selenide. /Selenium compounds/
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
SODIUM SELENITE is incompatible with strong acids. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Sodium Selenite in the storage compatibility matrix →