aluminum sulfate

chemical compound

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June 18, 2026

Quick Summary

Aluminum sulfate is a white salt with the chemical formula Al₂(SO₄)₃. It is typically produced by treating bauxite with sulfuric acid.1

This compound has several industrial applications, including its use in making paper, purifying water, and tanning leather. It is also a component of alums, which are hydrated double salts that have historically been used as mordants in dyeing, in water purification, and in medicine. Aluminum, the element from which aluminum sulfate is derived, is the most abundant metallic element in Earth's crust.123

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aluminum
Compounds
Another major compound is aluminum sulfate, a colourless salt obtained by the action of sulfuric acid on hydrated aluminum oxide. The commercial form is a hydrated crystalline solid with the chemical formula Al₂(SO₄)₃. It is used extensively in paper manufacture as a binder for dyes and as a surface…
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Another major compound is aluminum sulfate, a colourless salt obtained by the action of sulfuric acid on hydrated aluminum oxide. The commercial form is a hydrated crystalline solid with the chemical formula Al₂(SO₄)₃. It is used extensively in paper manufacture as a binder for dyes and as a surface…
Read More

alum
Aluminum sulfate can thus form alums with sulfates of the singly charged cations of potassium, sodium, ammonium, cesium, and other elements and compounds. In similar fashion, sulfates of the triply charged cations of iron, chromium, manganese, cobalt, and other metals may take the place of…
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Aluminum sulfate can thus form alums with sulfates of the singly charged cations of potassium, sodium, ammonium, cesium, and other elements and compounds. In similar fashion, sulfates of the triply charged cations of iron, chromium, manganese, cobalt, and other metals may take the place of…
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water supply system
Coagulation and flocculation
Aluminum sulfate (alum) is the most common coagulant used for water purification. Other chemicals, such as ferric sulfate or sodium aluminate, may also be used.
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Aluminum sulfate (alum) is the most common coagulant used for water purification. Other chemicals, such as ferric sulfate or sodium aluminate, may also be used.
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