Aluminium sulphate BP
Aluminium sulfate BP
| Code | Pack Size | Price | |
|---|---|---|---|
| 263F1 | 1Kg | £11.99 | Out of Stock |
Product Info
CAS-Number: 7784-31-8
In Stock: No
Hazchem: No
Documents
CAS-Number: 7784-31-8
In Stock: No
Hazchem: No
Documents
ALUMINIUM SULPHATE BP
SPECIFICATION:
- Molecular formula: Al2(SO4)3.16H2O
- Molar mass: 648.41 g/mol
- Appearance: white crystalline solid
- Density: 1.62 g/cm3
- Melting point: 86.5 C
USES FOR ALUMINIUM SULPHATE:
- 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.
- It is also used in styptic pencils.
- It can also be very effective as a molluscide, killing spanish slugs.
HOW TO CHANGE COLOUR OF HYDRANGEA WITH ALUMINIUM SULPHATE
In order to change the flowers of the hydrangea from pink to blue there needs to be aluminium present in the soil and a pH of less than 7 ideally between 5.2 and 5.5 (Acidic). Only plants older than 2 years which are established should be treated. Before commencing treatment to change colour it is strongly advisable to water plants thoroughly every day for a week. Where possible test soil around hydrangeas for pH.
- Add 15g (1 tablespoon) of aluminium sulphate in a litre of warm water and allow to sit for 15–30 minutes to dissolve.
- Add this to a watering can and make up to 5 litres with cold water.
- Apply the solution around the based of the hydrangea.
DO NOT OVERUSE as making the soil too acidic can result in damage to the roots. Check the pH and maintain it between 5.2 and 5.5.
