1. salts of ferric acid containing the FeO4²⁻ ion, used as oxidizing agents and in water treatment
Usage: chemistry; technical

Examples

• Potassium ferrate is a powerful oxidizing agent used in water purification.
• The researchers studied the stability of various ferrates in alkaline solutions.
• Sodium ferrate can effectively remove organic pollutants from wastewater.
• Ferrates are being investigated as environmentally friendly alternatives to chlorine.
• The purple color of ferrate solutions indicates their high oxidation state.
• Laboratory synthesis of ferrates requires careful control of pH conditions.