Substance profile
Sodium hydrogensulphate
Sodium hydrogensulphate: bisulfate, aqueous solution is a white crystalline solid dissolved in water.
01 · Identification
What Sodium hydrogensulphate is
Sodium hydrogensulphate: bisulfate, aqueous solution is a white crystalline solid dissolved in water. Its molecular formula is HNaO4S and its molecular weight is 120.06 g/mol. It melts at 315 °C.
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 |
|---|---|
| H318 | Causes serious eye damage. |
03 · Physical and chemical properties
Sodium hydrogensulphate 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 | 315 °C (599 °F) | Haz-Map | |
| Density | 2.4351 g/cm³ | at 25 °C | DOE PAC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Sodium hydrogensulphate
Reactivity
Acidic salts, such as SODIUM BISULFATE, SOLUTION, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pHs 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. The combination of calcium hypochlorite, sodium hydrogen sulfate, starch, and sodium carbonate, when compressed, caused the materials to incandescence, followed by explosion, [Ind. Eng. Chem., 1937, 15, 282].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Sodium hydrogensulphate in the storage compatibility matrix →