What is Aluminium Sulfate CAS 10043-01-3?

Aluminium Sulfate, also spelled Aluminum Sulfate or Aluminium Sulphate, is an inorganic aluminium salt with CAS 10043-01-3, EINECS 233-135-0 and the molecular formula Al2(SO4)3. The anhydrous form has a molecular weight of about 342.15 g/mol and is supplied as a white crystalline solid, granule or powder.

Is Aluminium Sulfate CAS 10043-01-3 the same as alum?

Not always. Aluminium Sulfate is often called filter alum or papermaker's alum, but the broader term alum may also describe double sulfate salts such as potassium aluminium sulfate. For ordering, identify the material by its product name, CAS number and stated commercial form or grade.

How does Aluminium Sulfate clarify water and wastewater?

When dosed into water, Aluminium Sulfate hydrolyses and forms gelatinous aluminium hydroxide, especially around pH 5.5-7.5. The precipitate destabilises or entraps suspended solids and colloids, allowing them to settle or be removed by filtration.

What are the main industrial applications of Aluminium Sulfate?

It is used as a coagulant in municipal and industrial water treatment, in wastewater clarification, and in papermaking for sizing and retention. It also functions as a mordant or fixing agent in textile dyeing and printing and is used in selected pH-adjustment or chemical-formulation processes.

What physical properties and grade details should buyers confirm?

The material is water-soluble, with a commonly cited solubility around 36.4 g/100 mL at 20 deg C, and forms an acidic aqueous solution. Buyers should confirm whether the grade is anhydrous or hydrated, along with active content or Al2O3 basis, iron, water-insoluble matter, pH, particle form and packaging.

Aluminium Sulfate CAS 10043-01-3

Aluminium Sulfate, also known as aluminum sulfate, CAS 10043-01-3, is an inorganic coagulant supplied as a white crystalline solid, granule or powder for water treatment, wastewater clarification and papermaking. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 10043-01-3
Synonyms: Aluminum Sulfate; Aluminium Sulphate; Dialuminium Trisulfate
Einecs: 233-135-0
Molecular Formula: Al2(SO4)3
Grade: Industrial grade
Package: 25 kg PE-lined woven bags

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Product Description

Aluminium Sulfate CAS 10043-01-3 is an inorganic aluminium salt, with EC 233-135-0 and molecular formula Al2(SO4)3.

Synonyms: Aluminum Sulfate; Aluminium Sulphate; Dialuminium Trisulfate.

CAS: 10043-01-3.

Molecular formula: Al2(SO4)3.

The anhydrous form has a molecular weight of about 342.15 g/mol.

It is supplied as a white crystalline solid, granule or powder.

It is positioned as an inorganic coagulant for water clarification, wastewater treatment and paper manufacturing.

It is used in municipal and industrial water treatment as a coagulant.

It is used in wastewater clarification.

It is used in papermaking for sizing and retention, and in textile dyeing as a mordant or fixing agent.

When dosed into water, it hydrolyses and forms gelatinous aluminium hydroxide, especially around pH 5.5-7.5.

It is water-soluble, with common solubility around 36.4 g/100 mL at 20 C, and forms an acidic aqueous solution.

Confirm whether the grade is anhydrous or hydrated, active content or Al2O3 basis, iron, water-insoluble matter, pH, particle form, and packaging.

Store in tightly closed containers in a cool, dry, well-ventilated area, away from moisture and direct sunlight.

Use suitable PPE when handling the material to prevent dust exposure and skin or eye contact.

Confirm packaging suitable for the solid form and order quantity, and follow the current SDS.

Confirm grade, packaging, and specification as required.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended application, required grade, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Aluminium Sulfate CAS 10043-01-3?

A: Aluminium Sulfate, also spelled Aluminum Sulfate or Aluminium Sulphate, is an inorganic aluminium salt with CAS 10043-01-3, EINECS 233-135-0 and the molecular formula Al2(SO4)3. The anhydrous form has a molecular weight of about 342.15 g/mol and is supplied as a white crystalline solid, granule or powder.
Q:
Is Aluminium Sulfate CAS 10043-01-3 the same as alum?

A: Not always. Aluminium Sulfate is often called filter alum or papermaker's alum, but the broader term alum may also describe double sulfate salts such as potassium aluminium sulfate. For ordering, identify the material by its product name, CAS number and stated commercial form or grade.
Q:
How does Aluminium Sulfate clarify water and wastewater?

A: When dosed into water, Aluminium Sulfate hydrolyses and forms gelatinous aluminium hydroxide, especially around pH 5.5-7.5. The precipitate destabilises or entraps suspended solids and colloids, allowing them to settle or be removed by filtration.
Q:
What are the main industrial applications of Aluminium Sulfate?

A: It is used as a coagulant in municipal and industrial water treatment, in wastewater clarification, and in papermaking for sizing and retention. It also functions as a mordant or fixing agent in textile dyeing and printing and is used in selected pH-adjustment or chemical-formulation processes.
Q:
What physical properties and grade details should buyers confirm?

A: The material is water-soluble, with a commonly cited solubility around 36.4 g/100 mL at 20 deg C, and forms an acidic aqueous solution. Buyers should confirm whether the grade is anhydrous or hydrated, along with active content or Al2O3 basis, iron, water-insoluble matter, pH, particle form and packaging.

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