Description
Molecular weight: 136.86 – 171.08 g/mol
pH: 2.0 – 3.5 (acidic)
Aluminium sulphate (Al₂(SO₄)₃) in a 40–50% solution is an inorganic chemical compound widely used as a coagulant and flocculant in various water and wastewater treatment processes. Its ability to destabilize suspended particles in liquids makes it a key agent in many industrial and municipal filtration systems.
Aluminium sulphate is an odorless liquid with a slightly yellowish or colorless appearance. It has an acidic reaction (pH 2.0 – 3.5), which allows effective regulation of water acidity in technological processes. Due to its strong electrostatic properties, it reduces the surface charges of colloidal particles, leading to their aggregation and easier removal from liquids.
It is a stable product, resistant to crystallization and sediment precipitation under storage conditions, which ensures long shelf life and ease of use. It dissolves completely in water, leaving no sediment or insoluble residues, making it efficient and convenient for dosing in treatment systems.
APPLICATION
Aluminium sulphate, 40–50% solution, is widely used as a coagulant in drinking water treatment, municipal and industrial wastewater treatment, and phosphate reduction, preventing eutrophication of water bodies. In the paper industry, it improves pulp quality and stabilizes suspensions, and in the textile industry, it supports dyeing and finishing processes. In the food industry, it is used for technological water treatment in breweries, dairies, and processing plants. In the restoration of water reservoirs, it improves water quality and limits the growth of cyanobacteria and algae. In construction, it is used as a concrete additive, increasing durability and mechanical properties. In the chemical and metallurgical industries, it supports technological processes and the treatment of process water. Thanks to its properties, it is a key agent in environmental protection and various industrial sectors.
PRECAUTIONARY MEASURES
Aluminium sulphate in a 40–50% solution is an acidic substance; therefore, special precautions should be taken during its use to avoid irritation of the skin, eyes, and respiratory tract.
| Type of contact | First aid measures |
|---|---|
| Skin contact | May cause mild irritation, especially with prolonged contact. The use of protective gloves is recommended. |
| Eye contact | May cause tearing and irritation. In case of contact, rinse with water for at least 10 minutes and consult a doctor. |
| Inhalation | May irritate the respiratory tract; work in well-ventilated areas is recommended. |
| Ingestion | May cause gastrointestinal problems if swallowed. In case of ingestion, contact a doctor. |
HAZARD CODES
| Category | Code and description |
|---|---|
| Hazard statements | H290 May cause corrosion of metals. H318 Causes serious eye damage. |
| Precautionary statements | P234 Keep only in original container. P280 Wear protective gloves/protective clothing/eye protection. P390 Absorb spillage to prevent material damage. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P310 Immediately call a POISON CENTER/doctor. P406 Store in a corrosion-resistant container with a resistant inner lining. |
