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E520 Aluminium sulphate is a chemical compound produced with Al2(SO4)3.
E520 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.
E520 Aluminium sulphate is a one of common aluminum salt, prone to hydrolyze, aqueous solution is acid. Added to the solution of soluble carbonates or sulfides will lead to complete hydrolysis: 2Al3++3CO2-3+2H2O=2Al(OH)3↓+3CO2↑ （2）2Al3++3S2-+3H2O=2Al(OH)3↓+3H2S↑
CAS Number: 10043-01-3
Molecular Formula: Al2O12S3
Molecular Weight: 342.15
EINECS Number: 233-135-0
Synonyms: Aluminum sulfate, Aluminium sulfate, Dialuminum trisulfate, Aluminum sulfate anhydrous, Aluminium sulphate, Dialuminum sulfate, Aluminum alum, Sulfuric acid aluminum salt, Sulfuric acid, aluminum salt (3:2), Filter alum, Pickle alum, Papermaker’s alum, Pearl alum, Aluminum trisulfate, Dialuminum sulphate, aluminum sulfate anhydrous, Aluminum(III) sulfate, aluminum(III) sulphate, Aluminum sesquisulfate, aluminum sulfate (2:3), aluminum sulphate (2:3), aluminum sulfate hydrate, aluminium sulfate hydrate, Aluminum sulphate hydrate, Dialuminum trisulfate hydrate, Sulfato dialuminum disulfate, Aluminii sulfas, Aluminii sulfas hydrate, aluminum potassium sulfate hydrate, alum cake, cake alum, aluminum alum (VAN), aluminium alum, aluminum sulfate (Al2(SO4)3), Al2(SO4)3, Aluminum sulfate (2/3), aluminum sulfate (anhydrous), aluminium sulfate (anh.), aluminum sulfate (3:2), sulfuricacid, aluminumsalt, Sulfuricacid, aluminumsalt(3:2), sulfuricacidaluminum(3+)salt(3:2), ALUMINIUM SULFATE, DEHYDRATE, LIQUID ALUM, Aluminium sulfate/ 99.99+%, Aluminium sulfate, extra pure, (trace metal basis), 99.999%;AluMiniuM sulfate, extra pure, (trace Metal basis)
E520 Aluminium sulphate a white flocculent precipitate aluminum hydroxide sediment, when heated it expands violently, becomes spongy substance.
E520 Aluminium sulphate to red heat, then it will be decomposed into sulfur trioxide and alumina.
E520 Aluminium sulphate were mixed, to crystallize, to obtain a new kind of salt called potassium aluminum sulfate K2SO4 · Al2 (SO4) 3 · 24H2O, this salt is called complex salt, also known as aluminum potassium alum, commonly known as alum.
From the composition point of view, it is formed by the adduct of two simple salt, is not a simple mixture of the two salt, but the compound of the same crystal structure, certain composition.
The difference between complex salt and complexe is that in the solid state or solution complex salt presents simple ions, without complex ions.
E520 Aluminium sulphate, can also form another double salt, the formula of which is M2ⅠSO4MⅡSO4 · 6H2O and MⅠ2SO4M2Ⅲ (SO4) 3 · 24H2O. Where MⅠ typically is NH + 4, Na +, K +, Rb +, Cs +, Tl +.MⅡ1 is Fe2 +, Co2 +, Ni2 +, Zn2 +, Cu2 +, Hg 2+; MuⅢ1 is Fe 3+, Cr3 +, Al3 +, etc.
This type of complex salt, collectively known as alum, for example: the molar salt (NH4) 2SO4 · FeSO4 · 6H2O, magnesium potassium sulfate K2SO4 · MgSO4 · 6H2O, chromium potassium sulfate K2SO4 · Cr2 (SO4) 3 · 24H2O, sodium alum Na2SO4 · Al2 ( SO4) 3 · 24H2O, alum, ammonium (NH4) 2SO4 · Al (SO4) 3 · 24H2O, etc.
These classes of alum, solubility in water is much smaller than their corresponding sulfates composition, and thus the crystallization from solution, it is easy to get a more complete crystal particles, easily purified.
This step of preparing alum is often used for purification of aluminum sulfate or preparation of relatively pure aluminum compound.
The class of Alum in the industry has a wide range of uses, alum can be used to clean drinking water, also used for tanning leather, printing and dyeing, papermaking and other industries.
E520 Aluminium sulphate, aluminum oxide or aluminum hydroxide with sulfuric acid can be prepared for aluminum sulfate.
E520 Aluminium sulphate is an inorganic aluminium salt of sulphuric acid with the chemical formula Al₂(SO₄)₃.
It is widely used as a coagulant, acidity regulator, processing aid, and flocculant in water treatment and industrial applications.
E520 Aluminium sulphate is a very important chemical in purification processes.
Chemically, E520 Aluminium sulphate consists of aluminium ions (Al³⁺) and sulfate ions (SO₄²⁻).
It forms acidic solutions when dissolved in water due to hydrolysis.
This gives it strong coagulating properties.
Physically, E520 Aluminium sulphate appears as a white crystalline solid, powder, or granules.
It is highly soluble in water and produces an acidic solution.
E520 Aluminium sulphate is stable under normal storage conditions.
E520 Aluminium sulphate acts as a coagulant, meaning it helps particles in water clump together.
This allows suspended solids to be removed more easily.
E520 Aluminium sulphate improves water purification efficiency.
E520 Aluminium sulphate is widely used in water treatment plants, where it removes turbidity and impurities from drinking water.
It helps form flocs that settle out of water.
E520 Aluminium sulphate improves water clarity and safety.
E520 Aluminium sulphate is used as an acidity regulator in industrial processes, helping control pH in various systems.
It maintains stable chemical conditions.
E520 Aluminium sulphate is best described as a highly effective coagulant and acidic inorganic salt used mainly for water purification, pH control, and industrial processing due to its strong ability to bind and remove suspended particles.
E520 Aluminium sulphate also plays an important role in pH-dependent coagulation systems, where its effectiveness increases in slightly acidic conditions.
It works by neutralizing charges on suspended particles in water.
This improves particle aggregation efficiency.
E520 Aluminium sulphate is used in drinking water pre-treatment systems, where it is often combined with other flocculants for better purification.
It helps reduce turbidity before filtration stages.
E520 Aluminium sulphate improves water treatment performance.
In sludge dewatering processes, E520 Aluminium sulphate helps bind fine particles into larger masses.
This makes it easier to separate water from sludge.
E520 Aluminium sulphate improves waste management efficiency.
E520 Aluminium sulphate is applied in stormwater treatment systems, where it helps remove sediments and organic contaminants from runoff.
It supports rapid clarification of large water volumes.
E520 Aluminium sulphate improves environmental water control.
In paper sizing chemistry, it interacts with rosin or synthetic sizing agents to control ink penetration.
E520 Aluminium sulphate allows better print definition and paper surface quality.
This improves printing performance.
E520 Aluminium sulphate is used in fire foam formulations (limited/older applications) where it contributes to foam stability in certain extinguishing systems.
It supports bubble formation and structure.
In industrial wastewater recycling, it is used to recover reusable water by removing suspended solids and colorants.
Melting point: 770 °C (dec.) (lit.)
Boiling point: 759.71°C (estimate)
Density: 2.71 g/mL at 25 °C (lit.)
Vapor pressure: 0-0.001Pa at 20-25℃
Solubility: Soluble in cold water, freely soluble in hot water, practically insoluble in ethanol (96 per cent).
pKa: 3.6 [at 20 ℃]
Form: Powder and/or Chunks
Color: White
Specific Gravity: 2.71
Odor: at 100.00%. odorless
Water Solubility: soluble
Sensitive: Hygroscopic
Merck: 14,366
Exposure limits: NIOSH: TWA 2 mg/m3
Dielectric constant: 2.6 (Ambient)
Cosmetics Ingredients Functions: ANTIPERSPIRANT; ASTRINGENT; DEODORANT
InChI: 1S/2Al.3H2O4S/c;;31-5(2,3)4/h;;3(H2,1,2,3,4)/q2*+3;;;/p-6
InChIKey: DIZPMCHEQGEION-UHFFFAOYSA-H
SMILES: [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
LogP: -5.08 to -0.12 at 20℃
E520 Aluminium sulphate is used in mineral processing, where it helps separate fine particles during ore beneficiation.
It enhances sedimentation and separation of unwanted materials.
This improves resource recovery.
In construction chemistry, it can influence setting behavior in cement-based materials.
E520 Aluminium sulphate may accelerate or modify hardening in controlled systems.
This improves material handling properties.
In laboratory applications, it is used to study coagulation, precipitation reactions, and water chemistry behavior.
IE520 Aluminium sulphatet provides a standard coagulant for experiments.
This improves scientific modeling accuracy.
E520 Aluminium sulphate is a widely used industrial coagulant and pH-active salt applied in water treatment, wastewater management, paper production, sludge processing, mineral separation, and chemical research due to its strong ability to destabilize suspended particles and promote floc formation under controlled acidic conditions.
E520 Aluminium sulphate is mainly used for turbidity water purification, also used as a precipitating agent, fixing agent, fillers, etc.
It is used as antiperspirant cosmetic ingredients (astringent) in cosmetics.
In addition, aluminum sulfate can also be used as paper industry sizing agent (rosin sizing, so that the color will be attached to the paper), leather tanning agents, mordant, purifying agent (flocculant, the resulting aluminum hydroxide floc may be coated with microparticles suspended in the water to promote rapid sedimentation separation), foam fire extinguisher inside agent (outside agent is sodium bicarbonate, carbon dioxide is generated after the reaction), raw materials for manufacturing alum, and white aluminum, oil bleaching, deodorization agent; pharmaceutical raw materials, as food curing agent (excipient); for impurities removal of oil, water, etc, pasteurized albumin stabilizer, lake raw materials, waste water treatment agent, waterproof concrete materials, fireproof raw materials.
E520 Aluminium sulphate is a salt with the formula Al2(SO4)3.
It is soluble in water and is mainly used as a coagulating agent (promoting particle collision by neutralizing charge) in the purification of drinking water[3][4] and wastewater treatment plants, and also in paper manufacturing.
E520 Aluminium sulphate also plays a key role in paper manufacturing, where it is used in sizing processes.
It helps control ink absorption and improves paper quality.
This improves printability and strength.
E520 Aluminium sulphate is used in textile industry, where it helps fix dyes onto fabrics.
It improves color retention and uniform dyeing.
This improves textile quality.
In leather tanning, it helps stabilize collagen fibers during processing.
E520 Aluminium sulphate supports chemical treatment of animal hides.
This improves leather durability.
E520 Aluminium sulphate is used in construction materials, especially in cement and waterproofing systems.
It helps modify setting behavior and material structure.
This improves construction performance.
In wastewater treatment, it removes suspended solids, oils, and organic matter.
E520 Aluminium sulphate improves sedimentation and filtration processes.
E520 Aluminium sulphate improves environmental protection.
E520 Aluminium sulphate is also used in fire extinguisher formulations (historical/limited use) due to its chemical properties in foam systems.
It supports fire suppression mechanisms.
This improves fire safety applications.
E520 Aluminium sulphate refractory binder is a kind of binding agents.
It is industrial aluminum sulfate produced through decomposition of bauxite with sulfuric acid or decomposition of aluminum hydroxide with sulfuric acid, obtained by hydrolysis.
Hardening mechanism of combination of aluminum sulfate binder is more complex, aluminum sulfate solution at room temperature exhibits SO42-, Al (OH) 2+ and Al (SO4) 3 and other states.
If left coagulant, coagulated slowly or not solidified.
After adding coagulant, such as after adding a coagulant alumina cement, SO42-will seize Ca2 + of alumina cement to form CaSO4, and also form iron sulfate, and magnesium sulfate, etc.
The interaction between them would form sulphoaluminate (3CaO · Al2O3 · 3CaSO4 · 31H2O or 3CaO · Al2O3 · CaSO4 · 12H2O) and ferric sulfate (FeO · Al2O3 · 4SO3 · 22H2O) and other precipitation crystallization of new substances, prompting condensation and hardening of combination.
Uses Of E520 Aluminium sulphate:
E520 Aluminium sulphate is one of the components of Nuclear Fast Red solution.It is a coagulant used for arsenate removal from water.
E520 Aluminium sulphate has been used in the preparation of the nuclear-fast red solution for red nuclear counterstaining in histology and cytology protocols.
It may be used as a catalyst for the conversion of lactic acid to acetaldehyde via decarbonylation.
E520 Aluminium sulphate may be used to form a porous composite adsorbent with graphene hydrogel to be used for fluoride removal from water.
E520 Aluminium sulphate acts as a flocculating agent in the purification of drinking water, and in waste water treatment plants.
It acts as a mordant in dyeing, printing, textiles and also used in paper manufacturing.
E520 Aluminium sulphate is a waterproofing agent and accelerator in concrete.
Further, it is used as a foaming agent in fire fighting foam, photographic film and in photochemicals.
E520 Aluminium sulphate is also used in styptic pencils, pain relief and in dentistry for gingival retraction cords.
E520 Aluminium sulphate is mainly used as a coagulant and flocculant in water treatment systems.
It helps remove suspended particles from water.
E520 Aluminium sulphate improves drinking water quality.
In municipal water purification, E520 Aluminium sulphate is used to clarify drinking water.
It binds fine particles into larger flocs that can be removed.
E520 Aluminium sulphate improves water safety.
In wastewater treatment, E520 Aluminium sulphate removes turbidity, organic matter, and pollutants.
It helps clean industrial and sewage water.
E520 Aluminium sulphate improves environmental treatment.
In paper production, it is used for sizing and improving paper strength and ink resistance.
E520 Aluminium sulphate helps control absorption properties of paper.
E520 Aluminium sulphate improves printing quality.
In textile dyeing, it helps fix dyes onto fibers for more stable coloration.
It improves color fastness.
E520 Aluminium sulphate improves fabric quality.
In leather processing, it supports tanning and stabilization of hides.
E520 Aluminium sulphate helps strengthen leather structure.
This improves durability.
In construction, E520 Aluminium sulphate is used in cement and waterproofing applications.
E520 Aluminium sulphate is mainly used as a coagulant, flocculant, and acidity regulator in water and industrial treatment systems.
E520 Aluminium sulphate helps remove suspended particles by making them clump together.
This improves purification efficiency.
In drinking water treatment, it is used to clarify water by removing turbidity, dirt, and fine particles.
It forms flocs that can be easily filtered or settled out.
This improves water quality and safety.
In wastewater treatment, it removes organic matter, suspended solids, and some pollutants.
It helps clean industrial and municipal wastewater.
E520 Aluminium sulphate improves environmental protection.
In paper manufacturing, it is used in the sizing process to control ink absorption and improve paper strength.
E520 Aluminium sulphate helps regulate surface properties of paper.
This improves print quality.
In textile processing, it helps fix dyes onto fibers and improves color stability.
E520 Aluminium sulphate ensures more uniform dye distribution.
This improves fabric quality.
In leather tanning, it supports stabilization of collagen fibers during processing.
E520 Aluminium sulphate helps strengthen and preserve animal hides.
E520 Aluminium sulphate improves leather durability.
In construction materials, it is used in cement and waterproofing systems.
It helps modify setting time and material structure.
E520 Aluminium sulphate improves construction performance.
In industrial processes, it is used to adjust pH and improve chemical reaction conditions.
It maintains stable processing environments.
E520 Aluminium sulphate improves manufacturing control.
In sludge treatment systems, it helps bind fine particles into larger aggregates for easier removal.
It improves dewatering efficiency.
E520 Aluminium sulphate improves waste handling.
In mineral processing, it supports separation of fine particles in ore treatment systems.
E520 Aluminium sulphate helps improve sedimentation and clarification.
E520 Aluminium sulphate is used across water purification, wastewater treatment, paper production, textiles, leather tanning, construction, sludge processing, and mineral industries, mainly due to its strong coagulating ability and ability to remove suspended particles from liquid systems.
Safety Profile Of E520 Aluminium sulphate:
Moderately toxic by ingestion and intraperitoneal routes.
Experimental reproductive effects human mutation data reported.
Hydrolyzes to form sulfuric acid, whch irritates tissue, especially lungs, when heated to decomposition it emits toxic fumes of SOx,.
E520 Aluminium sulphate is considered a moderate hazard chemical, mainly due to its acidity and irritant properties.
It is not highly toxic but can cause irritation with exposure.
Proper handling is required in industrial use.
The most common hazard is eye and skin irritation.
Contact with solid or concentrated solutions can cause redness, burning, and discomfort.
Severe exposure may damage tissues.
Inhalation of dust can cause respiratory irritation, including coughing and throat discomfort.
This is mainly an occupational risk during handling of powders.
Ventilation reduces exposure risk.
Ingestion of large amounts may cause gastrointestinal irritation, such as nausea, vomiting, or abdominal pain.
This is due to its acidic nature.
Normal regulated exposure levels are safe.
A key hazard is that aluminium sulphate forms acidic solutions in water.
This can contribute to corrosive effects on sensitive materials or tissues.
E520 Aluminium sulphate increases handling precautions.
E520 Aluminium sulphate can react with alkaline substances, producing heat and changing pH rapidly.
This may cause secondary chemical hazards in uncontrolled mixing.
