Ammonium bisulfate

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Ammonium bisulfate
Names
IUPAC name
Ammonium hydrogen sulfate
Other names
Ammonium bisulphate
Ammonium hydrogensulphate
Properties
NH4HSO4
Molar mass 115.11 g/mol
Appearance White hygroscopic solid
Density 1.78 g/cm3
Melting point 147 °C (297 °F; 420 K)
Boiling point 350 °C (662 °F; 623 K) (decomposes)
Soluble
Solubility Soluble in methanol
Insoluble in acetone
Hazards
Safety data sheet Sigma-Aldrich
Flash point Non-flammable
Related compounds
Related compounds
Ammonium sulfate
Ammonium bisulfite
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Ammonium bisulfate or ammonium hydrogen sulfate, is a white crystalline solid with the formula NH4HSO4.

Properties

Chemical

Ammonium bisulfate breaks down when heated to release sulfur oxides.

Physical

Ammonium bisulfate is a white hygroscopic solid, soluble in water.

Availability

Ammonium bisulfate is sold by chemical suppliers.

Preparation

Can be made via half-neutralization of sulfuric acid by ammonia.

Hydrolysis of sulfamic acid will also give ammonium bisulfate.

Thermal decomposition of ammonium sulfate also produces ammonium bisulphate as side product.

Projects

Handling

Safety

Ammonium bisulfate is corrosive and should be handled with proper protection.

Storage

In closed bottles, away from ammonia.

Disposal

Can be neutralized with aqueous ammonia or another base, then poured down the drain.

References

Relevant Sciencemadness threads