Substance profile
Sodium hydrogen difluoride
Sodium hydrogen difluoride is colorless, or white crystalline powder, rhombohedral.
01 · Identification
What Sodium hydrogen difluoride is
Sodium hydrogen difluoride is colorless, or white crystalline powder, rhombohedral.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
Other names for Sodium hydrogen difluoride
- sodium bifluoride
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 |
|---|---|
| H301 | Toxic if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
Precautionary statements: P260, P270, P280, P301, P310, P330, P331
03 · Physical and chemical properties
Sodium hydrogen difluoride 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 |
|---|---|---|---|
| Melting point | Decomposes in melting (USCG, 1999) | decomposes | CAMEO |
| Density | 2.08 g/cm³ | HSDB | |
| 2.08 g/cm³ | at 20 °C | CAMEO | |
| 2.08 g/cm³ | at 25 °C | DOE PAC | |
| Solubility | SOL IN COLD & HOT WATER | HSDB | |
| Autoignition temperature | Not flammable (USCG, 1999) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Sodium hydrogen difluoride
Reactivity
Acidic salts, such as SODIUM BIFLUORIDE, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Sodium hydrogen difluorid… in the storage compatibility matrix →