The persulfate ion, SO₅²⁻, is a polyatomic ion. SO₅²⁻ is also an oxoanion, which refers to a negative ion which contains one or more oxygen atoms. Persulfates, compounds containing the persulfate ion, are salts of Persulfuric acid; persulfates are unstable and readily decompose.

Oxoanion Sulfides

• SO₅²⁻ persulfate ion
• SO₄²⁻ sulfate ion
• SO₃²⁻ sulfite ion
• SO₂²⁻ hyposulfite ion

Uses

Persulfate salts are common ingredients in hair dye.

Oxoanions | Preservatives

Sulfit | Sulfite | Sulfito | Sulfite | Sulfiet | Сулфит | Sulfit

Salts