Aluminium sulfate, alternatively spelled either aluminum or sulphate, is a chemical compound with the formula Al2(SO4)3.

It is soluble in water and is mainly used as a flocculating agent in the purification of drinking water and waste water treatment plants, and also in paper manufacturing.

Aluminium sulfate is sometimes referred to as a type of alum. Alums are double sulfate salts, with the formula
AM(SO4)2·12H2O, where A is a monovalent cation such as potassium or ammonium and M is a trivalent metal ion such as aluminium.

The anhydrous form occurs naturally as a rare mineral millosevichite, found e.g. in volcanic environments and on burning coal-mining waste dumps. Aluminium sulfate is rarely, if ever, encountered as the anhydrous salt.

It forms a number of different hydrates, of which the hexadecahydrate Al2(SO4)3•16H2O and octadecahydrate Al2(SO4)3•18H2O are the most common.

The heptadecahydrate, whose formula can be written as [Al(H2O)6]2(SO4)3•5H2O, occurs naturally as the mineral alunogen.

USES

Aluminium sulfate is used in water purification and as a mordant in dyeing and printing textiles. In water purification, it causes impurities to coagulate which are removed as the particulate settles to the bottom of the container or more easily filtered. This process is called coagulation or flocculation.

When dissolved in a large amount of neutral or slightly alkaline water, aluminium sulfate produces a gelatinous precipitate of aluminium hydroxide, Al(OH)3. In dyeing and printing cloth, the gelatinous precipitate helps the dye adhere to the clothing fibers by rendering the pigment insoluble.

Aluminium sulfate is sometimes used to reduce the pH of garden soil, as it hydrolyzes to form the aluminium hydroxide precipitate and a dilute sulfuric acid solution. An example of what changing the pH level of soil can do to plants is visible when looking at the Hydrangea macrophylla. The gardener can add aluminium sulfate to the soil to reduce the pH level which in turn will result in the flowers of the Hydrangea turning a different color.

In construction industry it is used as waterproofing agent and accelerator in concrete. Another use is a foaming agent in fire fighting foam.

It is also used in styptic pencils, and pain relief from stings and bites.

It can also be very effective as a molluscicide, killing spanish slugs.

TAZCHEM's aim is to help you find the right chemical solution for your company's needs.

At TAZCHEM, we go to great lengths to provide you with top of the range chemicals. We will ensure that our chemicals meet your requirements.

Although our key product is Aluminium Sulphate, we also specialize in:

Other products we specialize in are:

• Lime (White & Brown)

• Chlorine gas

• Dry Chlorine (HTH)

• Sulphuric Acid

• Ammonium Sulphate Crystals

 

TAZCHEM further specialises in managing the total supply chain of all the above products.

HTH® SCIENTIFIC™ IS AVAILABLE IN THREE DIFFERENT FORMS:

◊ Chips

◊ Granular

◊ Tablets

This product is an effective fungicide and bactericide for disinfection of potable water in reservoirs and used as oxidizing agent in any sewage water, waste water, cooling water and potable water systems.

HTH® SCIENTIFIC™ is also approved for use as a disinfectant in potable water in the food industry.
HTH® SCIENTIFIC™ Chips are designed for use in Pulsar® Feeders and HTH® SCIENTIFIC™ Chip Dosers.

 

FEATURES

• Dry Solid Product
• High Active Ingredient
• Longer Shelf Life
• Requires Less Storage Space

 

REGULATORY

• SANS 295
• Department of Health
• Department of Agriculture (L7756 & L7755)
• EPA No. 1258-1179
• UN No 1748

 

PROPERTIES

• Available Chlorine (wt%): 65% minimum
• Appearance: White solid chips or granular with a distinctive chlorine smell

 

PACKAGING

HTH® SCIENTIFIC™ Chips and Granular are available in 25kg polypropylene drums.

 

88 Lamp Road, Wadeville, Germiston, Gauteng, South Africa
+27 11 827 7966
info@tazchem.com