Chemistry Solubility Rules

Ammonium

Ammonium

Always soluble

Acetate

Always soluble

Bicarbonate

Always soluble

Chlorate/perchlorate

Always soluble

Nitrate

Always soluble

Lithium

Always soluble

Sodium

Always soluble

Potassium

Always soluble

Rubidium

Always soluble

Cesium

Always soluble

Chlorides

Usually soluble (except PMS)

Bromides

Usually soluble (except PMS)

Iodides

Usually soluble (except PMS)

Fluorides

Usually soluble (except PMS, CaBaSr, and Mg)

Sulfates

Usually soluble (except PMS and CaBaSr)

Metal oxides

Insoluble (except alkali metals and ammonium)

Metal hydroxides

Insoluble (except alkali metals, ammonium, and CaBaSr)

Phosphates

Insoluble (except alkali metals and ammonium)

Carbonates

Insoluble (except alkali metals and ammonium)

Chromates

Insoluble (except alkali metals and ammonium)

Dichromates

Insoluble (except alkali metals and ammonium)

Sulfides

Insoluble (except alkali metals, ammonium, and CaBaSr)