1. A salt or ester containing two sulphate groups, or a salt formed by the partial neutralization of sulphuric acid.
Usage: Also spelled 'bisulfate' in U.S. English.; Chemistry term; commonly used in industrial and laboratory contexts.

Examples

• Sodium bisulphate is used as a cleaning agent in many industrial applications.
• The chemist added potassium bisulphate to the solution to adjust the pH.
• Bisulphate compounds are important intermediates in sulphuric acid production.
• The laboratory stored bisulphate reagents in clearly labeled containers.
• Ammonium bisulphate is sometimes used in fertilizers and water treatment.