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Kibbled Aluminium Sulphate

£22.07
£26.49 Inc. VAT
25kg
In stock
Item #
80009621
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Details

Aluminium sulphate, commonly known as alum is a hard crystalline solid or powder that is soluble in water. It contains around 17% alumina (Al2O3). It is manufactured in a simple process from aluminium trihydrate and sulphuric acid.

USES:

Aluminium Sulfate is used in water purification. 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.

Aluminium sulfate is sometimes used to reduce the pH of garden soil. The gardener can add Aluminum sulfate to the soil to reduce the pH level which in turn will result in the flowers of the Hydrangea turning a different color (see below).

Aluminium sulfate is the active ingredient of some antiperspirants.

In construction industry it is used as waterproofing agent and accelerator in concrete.

In paper making the alum reacts with rosin sizes of various types, helping to attach the newly formed rosin aluminates to fibres. Sizing makes the paper water resistant.

It is also used in styptic pencils.

It can also be very effective as a molluscide, killing spanish slugs. Aluminium sulphate is considered to be a relatively environmentally friendly treatment for slugs compared to the more toxic conventional products like metaldehyde.(See below - How to use aluminium sulphate to kill slugs)

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