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CAS NUMBER: 10043-01-3

EC NUMBER: 233-135-0




Aluminium sulphate hydrate is a hydrated aluminum salt. 
Aluminium sulphate is widely used in oil and fat processing, paper manufacturing and as a flocculant for water treatment. 

The kinetics of Aluminium sulphates dehydration by thermal decomposition has been investigated. 
Aluminium sulphate is one of the components of hematoxylin solution. 

Spherical particles of Aluminium sulphate hydrate has been synthesized by prilling technique.
Aluminium sulphate hydrate was used in the synthesis of new high crystalline zeolite materials.

Aluminium sulphate may be used in the synthesis of Al-doped ZnO nanorods and spherical alumina powders.
Aluminium sulphate is used in water purification as a coagulant that removes phosphate and bacteria and as a pH conditioner. 

Aluminium sulphate acts as a coagulant by reacting with hydroxide to form aluminium hydroxide, which Aluminium sulphate is a salt with the formula Al2(SO4)3. 
Aluminium sulphate is soluble in water and is mainly used as a coagulating agent in the purification of drinking water and wastewater treatment plants, and also in paper manufacturing.

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

Aluminium sulphate 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.

Aluminium sulphate is sometimes called alum or papermaker's alum in certain industries. 
However, the name "Aluminium sulphate" is more commonly and properly used for any double sulphate salt with the generic formula XAl(SO4)2·12H2O, where X is a monovalent cation such as potassium or ammonium.

Aluminium sulphate schists employed in the manufacture of aluminium sulphate are mixtures of iron pyrite, aluminium silicate and various bituminous substances, and are found in upper Bavaria, Bohemia, Belgium, and Scotland. 
These are either roasted or exposed to the weathering action of the air. 

In the roasting process, Aluminium sulphate is formed and acts on the clay to form aluminium sulphate, a similar condition of affairs being produced during weathering. 
The mass is now systematically extracted with water, and a solution of aluminium sulphate of specific gravity 1.16 is prepared. 

Aluminium sulphate is allowed to stand for some time (in order that any calcium sulphate and basic iron(III) sulphate may separate), and is then evaporated until iron(II) sulphate crystallizes on cooling; it is then drawn off and evaporated until it attains a specific gravity of 1.40. 
Aluminium sulphate is now allowed to stand for some time, and decanted from any sediment.

In the preparation of Aluminium sulphate from clays or from bauxite, the material is gently calcined, then mixed with sulfuric acid and water and heated gradually to boiling; if concentrated acid is used no external heat is generally required as the formation of Aluminium sulphate is exothermic. 
Aluminium sulphate is allowed to stand for some time, and the clear solution is drawn off.

Aluminium sulphate is an aluminum salt with immune adjuvant activity. 
Aluminium sulphate adsorbs and precipitates protein antigens in solution; the resulting precipitate improves vaccine immunogenicity by facilitating the slow release of antigen from the vaccine depot formed at the site of inoculation.

Aluminium sulphate is a white crystalline solid. 
Aluminium sulphate is also obtained as an 18-hydrate Al2(SO4)3.18H2O. 

Both forms are soluble in water, noncombustible, and nontoxic. 
The primary hazard is the threat to the environment. 

Immediate steps should be taken to limit its spread to the environment. 
Aluminium sulphate is used in paper making, in firefighting foams, and in sewage treatment and water purification.

Aluminium sulphate, solution appears as a clear colorless aqueous solution. 

Density 10.9 lb / gal. 

Used in paper making, in firefighting foams, as a fireproofing agent, in sewage treatment and water purification.
Aluminium sulphate has many different uses in day-to-day life, as well as being used in several essential industries.

Aluminium sulphate is the most preferred coagulant due to the efficiency and cost-effectiveness but traces of aluminum residuals in treated water have been potent agent for Alzheimer’s diseases. 
Researchers have also evaluated the coagulation efficiency of aluminum chloride (AlCl3). 

Although Aluminium sulphates are stable, readily soluble, and easily available, issue of sludge disposal is another environmental threat. 
Apart from this, Aluminium sulphate has also found to increase corrosiveness in water. 

Aluminum sulphate is a chemical compound containing aluminum element and sulphate roots (sulfur and oxygen). 
Aluminium sulphate is a white crystalline material and rarely spontaneously formed in nature. 

In the case of industrial Aluminium sulphate is reacted with sulfuric acid is produced.
Aluminium sulphate has been an important compound throughout history. 

Aluminium sulphate together with potassium sulphate is also known as alum name in our country. 
Drinking water treatment is the most common use. 

Aluminium sulphate is a very good filtering agent, Aluminium sulphate is used for the process of removing undesired material from the environment by collapsing the production process.
As a pH regulator in agriculture Aluminium sulphate helps to enrich the soil with mineral.

Another major compound is Aluminium sulphate, a colourless salt obtained by the action of sulfuric acid on hydrated aluminum oxide. 
The commercial form is a hydrated crystalline solid with the chemical formula Al2(SO4)3. 

Aluminium sulphate is used extensively in paper manufacture as a binder for dyes and as a surface filler. 
Aluminium sulphate combines with the sulphates of univalent metals to form hydrated double sulphates called alums. 

Aluminium sulphates, double salts of formula MAl(SO4)2 ·12H2O (where M is a singly charged cation such as K+), also contain the Al3+ ion; M can be the cation of sodium, potassium, rubidium, cesium, ammonium, or thallium, and the aluminum may be replaced by a variety of other M3+ ions—e.g., gallium, indium, titanium, vanadium, chromium, manganese, iron, or cobalt. 
The most important of such salts is Aluminium sulphate, also known as potassium alum or potash alum. 

Aluminium sulphates have many applications, especially in the production of medicines, textiles, and paints.
Aluminium sulphate is a chemical compound that is soluble in water. 

Aluminium sulphate is mainly used as a coagulant during the water purification process, wastewater treatment, and paper manufacturing. 
However, Aluminium sulphate has found a rather interesting use in gardening.
Aluminium sulphate is safe to use in small quantities of less than 28.5 g or one ounce. 
Aluminium sulphate has plenty of uses and is available in powder and liquid form.

Aluminium sulphate isn’t a fertilizer, but still, many people use it in gardening. 
Aluminium sulphate is useful in gardening since it improves the pH of soil. 

Soil varies from one location to another. 
The difference isn’t only felt in texture but also in the level of alkalinity or acidity. 

Soil pH is the soil’s level of acidity or alkalinity. Soil with a pH level of 7 is considered neutral; those with lower than seven and higher than seven are graded as acidic and alkaline, respectively. 
Regions that experience plenty of rainfall have acidic soil, while dry areas tend to have alkaline soils.

When gardening, the soil pH is essential. 
Also, you can have alkaline soil while you want to plant acid-loving plants. 

Most plants thrive well in soils having a pH range of 6.0 and 7.2, slightly alkaline or slightly acidic.
Aluminium sulphate acidifies the soil by lowering its pH, making Aluminium sulphate suitable for acid-loving plants. 

When you mix aluminium sulphate with water, it forms a diluted solution of sulfuric acid and aluminium hydroxide. 
The sulfuric acid solution alters the acidity level of the soil.

Easily soluble in water, insoluble in alcohol. 
Since Aluminium sulphate is the most common coagulant used in water treatment, it can be sold in 1 ton big-bags in granular and powder form. 

In accordance with occupational health and safety regulations, standard Aluminium sulphate packaging is 25 kg. 
Aluminium sulphate we sell is in Type-1 norm and at the level of 16-17 percent purity. 

Aluminum sulphate, which does not show corrosive activity in dry form, becomes corrosive in its solution with water. 
Due to Aluminium sulphates corrosive feature, Aluminium sulphate should be stored in plastic or stainless steel tanks.

Aluminium sulphate is also called Filter Alum or Dialuminum trisulphate. 
Aluminium sulphate is a white crystalline solid in its anhydrous form and in its solution form it appears as a colourless liquid. 

Both the forms are non-toxic and non-combustible.
Aluminium sulphate is soluble in water but insoluble in ethanol. 

Aluminium sulphate is odourless and has a mildly astringent taste, sweet taste. 
On decomposing, Aluminium sulphate emits toxic fumes of sulphur oxides. 

The solution of aluminium sulphate is corrosive to aluminium. 
Aluminium sulphate is produced in the laboratory by adding aluminium hydroxide, to sulphuric acid.

Aluminium sulphate is used in baking soda.
Aluminium sulphate is used for gardening to balance the soil PH.

Used in the purification of water.
Aluminium sulphate is used in the dyeing of cloth.

Aluminium sulphate is used in making paper.
Used for the printing on cloth.

Aluminium sulphate is used in concrete as an accelerator and waterproofing agent.
Aluminium sulphate is used in firefighting foam.

Aluminium sulphate is used in sewage treatment.
Aluminium sulphate is used as the fireproofing agent.

Aluminium sulphate is formed by reacting with the correct amount of sulphuric acid to freshly precipitated aluminium hydroxide. 
The solution that results is then evaporated and allowed to crystallize. 

Accessible as pure, lustrous crystals, granules, or powder.
Aluminium sulphate is an ionic compound, a combination of both positive and negative ions. 

Ions are charged atoms, which may either be monatomic ions (single atoms) or polyatomic (multiple atoms combined to form a charged part). 
Aluminium sulphates a + 3 ion, Al+3, and sulphate is the -2 polyatomic ion, (SO4)-2.

Aluminium sulphate is an irritant to the skin and eyes, so you should wear gloves and eye protection while dealing with it. 
Aluminium sulphate is mildly dangerous if aluminium sulphate is swallowed in any way because when the salt is swallowed it can form extremely corrosive sulphuric acid.

Aluminium sulphate is a chemical compound produced with Al2(SO4)3. 
Aluminium sulphate is soluble in water and is primarily used in purification of drinking water and wastewater treatment plants as a coagulating agent (promoting particle collision by neutralizing charge) as well as in paper processing.

Aluminium sulphate is a moderately water and acid soluble Aluminum source for uses compatible with sulphates. 
Aluminium sulphates are salts or esters of sulfuric acid formed by replacing one or both of the hydrogens with a metal. 

Most metal sulphate compounds are readily soluble in water for uses such as water treatment, unlike fluorides and oxides which tend to be insoluble. 
Organometallic forms are soluble in organic solutions and sometimes in both aqueous and organic solutions. 

Metallic ions can also be dispersed utilizing suspended or coated nanoparticles and deposited utilizing sputtering targets and evaporation materials for uses such as solar cells and fuel cells. 
Aluminium sulphate is generally immediately available in most volumes. 
High purity, submicron and nanopowder forms may be considered. 




Aluminium sulphate is sometimes used in the human food industry as a firming agent, where it takes on E number E520, as a bactericide. 
In the USA, the FDA lists Aluminium sulphate as "generally recognized as safe" with no limit on concentration.

Aluminium sulphate may be used as a deodorant, an astringent, or as a styptic for superficial shaving wounds.
Aluminium sulphate is a common vaccine adjuvant and works "by facilitating the slow release of antigen from the vaccine depot formed at the site of inoculation.

Aluminium sulphate is used in water purification and as a mordant in dyeing and printing textiles. 
In water purification, Aluminium sulphate causes suspended impurities to coagulate into larger particles and then settle to the bottom of the container more easily. 

This process is called coagulation or flocculation. 
Research suggests that in Australia, aluminium sulphate used this way in drinking water treatment is the primary source of hydrogen sulfide gas in sanitary sewer systems.

An improper and excess application incident in 1988 polluted the water supply of Camelford in Cornwall.
When dissolved in a large amount of neutral or slightly alkaline water, aluminium sulphate 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 sulphate 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 Hydrangea macrophylla. 
The gardener can add aluminium sulphate to the soil to reduce the pH which in turn will result in the flowers of the Hydrangea turning a different color (blue). 

Aluminium sulphate is what makes the flowers blue; at a higher pH, the aluminium is not available to the plant.
In the construction industry, Aluminium sulphate is used as waterproofing agent and accelerator in concrete. 

Another use is a foaming agent in fire fighting foam.
Aluminium sulphate is trapped by the foam stabilizer and creates a thick foam which will float on top of hydrocarbon fuels and seal off access to atmospheric oxygen, smothering the fire. Chemical foam was unsuitable for use on polar solvents such as alcohol, as the fuel would mix with and break down the foam blanket. 

Aluminium sulphate generated also served to propel the foam out of the container, be it a portable fire extinguisher or fixed installation using hoselines. 
Chemical foam is considered obsolete in the United States and has been replaced by synthetic mechanical foams, such as AFFF which have a longer shelf life, are more effective, and more versatile, although some countries such as Japan and India continue to use it.

Aluminium sulphate is used for different purposes clarifying agent, clumping agent, tanning agent, adhesive agent, stabilizer) in various industries such as food, paper, textile, medicine, cosmetics, waste water, fire extinguisher.
Aluminium sulphate is used as a mordant in dyeing, as a waterproofing agent for concrete, as a clarification agent for fats and oils, as an odor and color remover in oil refining processes, as a precipitating agent in sewage treatment and water purification, and also as a food additive.

Aluminum sulphate (alum) is used in industrial wastewater or drinking water treatment.
Aluminium sulphate is widely used in chemistry, gold and precious metal processing, jewelry, plating, etc. 

Aluminium sulphate is used for precipitation in many different industries.
Aluminium sulphate, AI2(S04)3 , is a colorless salt composed of monoclinic crystals with a specific gravity of 2.71. 

Aluminium sulphate is used in manufacturing dyes, paint, and varnish removers. 
Aluminium sulphate decomposes with the application of heat and it is water soluble.

Aluminium sulphate is a common aluminum salt used in astringents. 
Aluminium sulphate is very similar to aluminum.




-Lowers pH levels


-Reduces sweating 




Some of the most common uses of Aluminium sulphate are found within the home. 
Aluminium sulphate is often found in baking soda, although there’s some controversy over whether it’s appropriate to add aluminum to the diet. 

Some antiperspirants contain Aluminium sulphate because of its antibacterial properties, although as of 2005 the FDA does not recognize it as a wetness reducer. 
Finally, the compound is the astringent ingredient in styptic pencils, which are designed to stop small cuts from bleeding.

Other interesting uses of Aluminium sulphate around the house are in gardening. 
Because Aluminium sulphate is extremely acidic, Aluminium sulphate’s sometimes added to very alkaline soils to balance the pH for plants. 

When the Aluminium sulphate comes into contact with water, Aluminium sulphate forms aluminum hydroxide and a much diluted sulfuric acid solution, which alters the soil acidity. 
Gardeners who plant hydrangeas apply this property to change the flower color of the hydrangeas since this plant is very sensitive to soil pH.

One of the most important uses of Aluminium sulphate is in water treatment and purification. 
When added to water, Aluminium sulphate causes microscopic impurities to clump together into larger and larger particles. 

These clumps of impurities will then settle to the bottom of the container or at least get large enough to filter them out of the water. 
This makes the water safer to drink. On the same principle, Aluminium sulphate is also sometimes used in swimming pools to decrease the cloudiness of the water.

Another one of the many uses of Aluminium sulphate is in dyeing and printing on cloth. 
When dissolved in a large amount of water that has a neutral or slightly alkaline pH, the compound produces a gooey substance, aluminum hydroxide. 

The gooey substance helps dyes stick to the cloth fibers by making the dye water insoluble. 
The role of Aluminium sulphate, then, is as a dye “fixer,” which means that it combines with the molecular structure of the dye and the fabric so the dye doesn’t run out when the fabric gets wet.

In the past, Aluminium sulphate was used in making paper, although synthetic agents have mostly replaced it. 
The Aluminium sulphate helped to size of the paper. 

In this process, Aluminium sulphate was combined with rosin soap to change the absorbency of the paper. 
This changes the ink-absorbing properties of the paper. 

Using Aluminium sulphate means that the paper was made under acidic conditions. 
Use of synthetic sizing agents means that acid-free paper can be produced. 
Acid-free paper does not break down as fast as paper sized with acid.




-Quality Level: 200

-assay: 98%

-form: beads or granules, powder, crystals or chunks

-composition: Degree of hydration, 14-18

-density: 1.69 g/mL at 25 °C (lit.)

-SMILES string: [Al+3].[Al+3].[H]O[H].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O

-InChI: 1S/2Al.3H2O4S.H2O/c;;3*1-5(2,3)4;/h;;3*(H2,1,2,3,4);1H2/q2*+3;;;;/p-6





-Compound Formula: Al2O12S3

-Molecular Weight: 360.166157

-Appearance: White Crystals or Powder

-Melting Point: 770° C

-Density: 2.71 g/cm3 (20 °C)

-Solubility in H2O: Soluble

-pH: 3.5 (20 °C)

-Exact Mass: 359.82883

-Monoisotopic Mass: 359.82883



Separated from bases and strong oxidants. 

Store in an area without drain or sewer access. 
Provision to contain effluent from fire extinguishing. 



Dialuminum trisulphate
Aluminium sulphate
Sulfuric acid, aluminum salt 
Aluminium sulphate anhydrous
Aluminium sulphate 
Aluminum sulphate
DiAluminium sulphate
aluminum(III) sulphate
aluminium sulphate anhydrous
sulfuric acid, aluminium salt 
Filter Alum
Papermakers Alum
Pickle Alum
Pearl Alum
Dialuminum sulphate
Cake alum (VAN)
Aluminum sesquisulphate
Sulfuric acid, aluminum salt
Aluminum alum (VAN)
Hi Soft C 2
Aluminum(III) silfate
Caswell No. 031A










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