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ALUMINIUM SULPHATE

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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.

SPECIFICATION   Non-Ferric Aluminium Sulphate 
     
Aluminium Oxide : Al2O3: min 16.5%
Iron Fe content % : Max 0.005
Water insoluble matter % : Max 0.15
PH value 1% Aqueous Solution : Min 3.0
Particle size : 0.5 - 5 mm
Packing : PP/PE 50Kg

ALUMINIUM SULPHATE - IRON FREE GRANULAR

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ALUMINIUM SULPHATE - IRON FREE POWDER

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SPECIFICATION
Aluminium Oxide : Al2O3 % min 17.0
Iron Fe content % : Max 0.005
Water insoluble matter % : Max 0.15
Size Powder : 40-60 Mesh
Packing : PP/PE 25Kg
SPECIFICATION    
     
Aluminium Oxide Al2O3  : 17.0% Min
Iron Fe  : 0.07% Max
Water insolubles  : 0.50% Max
Lead (Pb)  : 50 ppm Max
Arsenic (As)  : 50 ppm Max
Free Acid as H2SO4  : 0.10% Max
Particle Size : 1.5 - 3.5 cm

ALUMINIUM SULPHATE - KIBBLE 17%

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ALUMINIUM SULPHATE - SOLUTION

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Analyte Unit Value Specification
       
Density @ 20◦C g/mL 1.30 -
pH @ 20◦C (0.1 M Solution) Value 3.34 2.6 - 3.3
Sodium as Na % 0.342 -
Magnesium as Mg % 0.327 -
Aluminium as AI % 3.73 3.2 - 4.4
Aluminium as Al₂O₃ % 7.05 7.0 - 8.4
Silica as Si % 0.143 -
Phosphorus as P % 0.081 -
Sulfur as S % 6.69 -
Chlorine as CI % 1.43 -
Potassium as K % 0.030 -
Calcium as Ca % 0.062 -
Chromium as Cr % <0.01 0.0030*
Iron as Fe % 0.073 0.16 **
Nickel as Ni % <0.01 0.0020 *
Arsenic as As % <0.01 0.0014 *
Selenium as Se % <0.01 0.0020 *
Cadmium as Cd % <0.01 0.0003 *
Antimony as Sb % <0.01 0.0020 *
Mercury as Hg % <0.01 0.0004 *
Lead as Pb % <0.01 0.0040 *

OTHER CHEMICALS

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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.

SULPHURIC ACID

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ELEMENT ASSAYS  
       
H2SO4 : 97.% ±2%  
Non Vol Mat : <0.1%  
NO3 : 20 Mg/l
NH4 : <5 ppm
As : 1 ppm
Ba : 0.5 ppm
Ca : 20 ppm
Cd : 9 ppm
Co : 1 ppm
Cr : 5 ppm
Cu : 6 ppm
Fe : 53 ppm
Ni : 2 ppm
Mg : 21 ppm
Mn : 1 ppm
Mo : 1 ppm
Pb : 6 ppm
Na : 4 ppm
Zn : 4 ppm
Sr : 1 ppm
Se : 1 ppm
Ci : 1 ppm
SPECIFICATION      
       
Ca (OH)2 : >92%  
Available Lime as CaO : Typical 70% (AS TM) (Min 65%)  
Ca CO3 : <5%  
SiO2 : <1.5%  
Sulphur (S) : <0.03%  
Mg, as MgO : <1.8%  
Iron (Fe) : <0.08%  
Aluminium (Al) : <0.4%  
Manganese (Mn) : <40 ppm
Cobalt (Co) : <50 ppm
Zinc (Zn) : <50 ppm
Nickel (Ni) : <50 ppm
Copper (Cu) : <15 ppm
Chromium (Cr) : <50 ppm
Particle Size : <5% retained on 106 µm sieve  
Free Moisture : <1%  
Shelf Life : 1 Year  
Country of manufacture : China  

HYDRATED LIME - WHITE

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HTH® SCIENTIFIC™

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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.

TESTS SPECS RESULTS
Ammonia (as N)   21,1
Sulphur (as S)   24,6
Arsenic (as As) Not more than 50 <1
Cadmium (as Cd) Not more than 20 <0.1
Chromium (as Cr) Not more than 1750 0,7
Copper (as Cu) Not more than 750 0,09
Lead (as Pb) Not more than 400 <0.5
Mercury (as Hg) Not more than 10 <0.5
Nickel (as Ni) Not more than 200 <0.5
Selenium (as Se) Not more than 15 < 2
Zinc (as Zn) Not more than 2750 1,2

AMMONIUM SULPHATE CRYSTALLINE

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WST

WST is a water and effluent treatment solution provider associated with TAZCHEM (Pty) Ltd. You can visit their website HERE

WST

Refractory Till cc is a manufacturer and supplier of calcined chamotte for the South African Refractory market.You can visit their website HERE

 

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