Sodium bisulfate

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Sodium bisulfate
Chemical formula NaHSO4
OTP appearance white powder 
Molar Mass(g/mol) 120.6 
Melting Point(°C) 315 
Density(g/cc) 1.8 
Solubility in water(g/L) 285
NFPA 704
NFPA704.png
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Thermal decomposition of
sodium bisulfate monohydrate
58.5
monohydrate
58.5°C
anhydrous
315
anhydrous
315°C
pyrosulfate
460
pyrosulfate
460°C
sulfate + sulfur trioxide

Uses

Other

Natural occurrence

  • Does not occur naturally.

Hazards

Production

Synthesis

From dithionite

An aqueous solution of sodium dithionite, in the presence of oxygen, creates both sodium bisulfite and sodium bisulfate:

Na2S2O4(aq) + O2(aq) + H2O NaHSO4 + NaHSO3

From bisulfite

Oxidize bisulfite to bisulfate

From sulfuric acid

Purification

  • Recrystallize from water

Testing

Storage

Disposal

See also

References