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10043-01-3 Usage

Uses

for the production of artificial stones and advanced ammonium alum.
curing agent (oil, water and the like with impurity), pasteurized albumin stabilizer (including liquid or frozen whole, egg yolk or protein). Maximum allowable amount (FAO/WHO, 1984) 0.036%.
for papermaking, water purification, and used as a mordant, tanning agents, astringent medicine, wood preservatives, foam fire extinguishing agent.

Content Analysis

The sample of about 4g is accurately weighed, put into a 250ml volumetric flask, dissolved in water and mixed in constant volume. The solution of 10ml is Drew, transferred into a 250ml beaker, adding 0.05mol/L disodium EDTA solution of 25.0ml and pH of 4.5 buffer (made by mixing ammonium acetate of 77.1g and acetic acid of 57ml , adding water to constant volume of 1000m1) 20ml, boiled by slow fire for 5min . After cooling, adding ethanol of 50ml and dithizone test solution (TS-94) of 2ml. Titration With 0.05mol/L zinc sulfate to the bright red rose, while conducting a blank titration. 0.05mol/L disodium EDTA equivalent amounts to aluminum sulfate [Al2 (SO4) 3] of 8.554mg, or aqueous aluminum sulfate [Al2 (S O4) 3 ·18H2O] of 16.66mg.

Common aluminum salt

Aluminum sulfate 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:
(1)2Al3++3CO2-3+2H2O=2Al(OH)3↓+3CO2↑ (2)2Al3++3S2-+3H2O=2Al(OH)3↓+3H2S↑
Produce a white flocculent precipitate aluminum hydroxide sediment, when heated it expands violently, becomes spongy substance. Calcined to red heat, then it will be decomposed into sulfur trioxide and alumina.
Aluminum sulfate solution and potassium sulfate solution 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.
Aluminum sulfate and other soluble sulfate, 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. Aluminum, aluminum oxide or aluminum hydroxide with sulfuric acid can be prepared for aluminum sulfate.
The above information is edited by the chemicalbook of Yan Yanyong.

extinguishing agents

Foam, carbon dioxide, dry powder

Reactivity Profile

Aqueous solutions of ALUMINUM SULFATE are acidic. The solid may corrode metals in presence of moisture.

Air & Water Reactions

Dissolves in water with evolution of some heat. creates acidic solutions.

Identification test

With 10% of the sample solution, the aluminum (IT-2) and sulfate (IT-29) test should be positive.
Solubility is measured by the OT-42 method, Easily soluble in water, insoluble in ethanol.
pH is measured with a glass electrode 5% aqueous solution, the value is 2.9 or more.

Physical and Chemical Properties

Colorless or white crystals. Odorless, slightly sweet taste. Because of containing iron etc, industrial product looks like a yellowish-green, tastes sour. It was Stable in the air, heated to 250 ℃ to lose crystal water, when heated above 700 ℃, begin decompose into aluminum oxide, sulfur trioxide and water vapor, etc. Soluble in water, aqueous solution is acidic. Al2 (SO4) 3 + 2H2O → Al2 (SO4) 2 (OH) 2 + H2SO4, when hydrate were heated, violently swell and become spongy, when heated to a red heat, it decomposes into sulfur trioxide and alumina. Flocculent or sponge-like Al (OH) 3 has a strong adsorption capacity, good absorption of pigments and fibers, and thus used as a mordant in dyeing industry, also used to purify drinking water. In addition, in the paper industry, it can added to the pulp with rosin simultaneously for fiber bonding.
Aluminum sulfate has Anhydride and a variety of patterns of hydrate existing (16,18,27, etc). Among aluminum sulfate, the more stable is anhydrous aluminum sulfate [1] and 18 hydrated aluminum sulfate [2]. [1] is a colorless orthorhombic crystals, shiny, or white crystalline powder. Relative molecular mass is 342.15. The relative density is 2.71. Gradually heating to melt, it begins to lose crystal water at 250 ℃, decompose at 770 ℃. The refractive index is 1.47. Dissolved in water, slightly soluble in ethanol, aqueous solution is acidic. Solubility in water: 37.9 at 0 ℃, 38.1 at 10 ℃, 38.5 at 25 ℃, 38.9 at 30 ℃, 40.4 at 40 ℃,44.9 at 60 ℃, 48.8 at 70 ℃, 89 at 100 ℃. [2] is a colorless monoclinic needles. Relative molecular mass is 666.43. The relative density is 1.69 (17/4 ℃). decompose at 86.5 ℃. Dissolved in water, not soluble in ethanol. The solubility in water is 86.9 at 0 ℃, 1104 at 100 ℃. Aqueous solution is acidic due to hydrolysis.
Aluminum sulfate easily absorb water to agglomerate, use plastic bags lined with plastic bags of glass for packaging. Storage and transportation should prevent rain and damp.

Category

toxic substances

Definition

ChEBI: An aluminium sulfate that contains no water of crystallisation.

Toxicity grading

poisoning

Purification Methods

It crystallises from hot dilute H2SO4 (l mL/g) on cooling in ice. When a solution of alumina (Al2O3) in conc H2SO4 is slowly cooled, Al2SO4 17 or 18H2O deposits as a crystalline mass. Al2SO4 17H2O is the stable form in equilibrium with its saturated aqueous solution at 25o [Smith J Am Chem Soc 64 41 1942]. This is purified by dissolving it in a small volume of H2O and adding EtOH until the sulfate readily crystallises from the oily supersaturated solution. It forms Al2O3 16H2O between 0-112o. On gradual heating, the hydrate melts, giving the anhydrous salt at ca 250o. Several hydrates up to 27H2O have been described. Further heating to red heat (~ 600-800o) causes decomposition to Al2O3 + SO3 + SO2 and O2 [Cobb J Soc Chem Ind 29 250 1910]. The ACS reagent is Al2O3 18H2O (98+%).

Storage characteristics

Treasury ventilation low-temperature drying

Purpose and effect of aluminum sulfate

Aluminum sulfate 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.

Solubility in water (g / 100ml)

Dissolved per 100 ml of water at different temperatures (℃) in grams:
31.2g/0 ℃; 33.5g/10 ℃; 36.4g/20 ℃; 40.4g/30 ℃; 45.8g/40 ℃
59.2g/60 ℃; 73g/80 ℃; 80.8g/90 ℃; 89g/100 ℃

General Description

Anhydrous aluminum sulfate is a white crystalline solid. Aluminum sulfate 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 sulfate is used in paper making, in firefighting foams, and in sewage treatment and water purification.

Acute oral toxicity

oral-mouse LD50: 6207 mg/kg; intraperitoneal-Mouse LD50: 1735 mg/kg

Flammability hazard characteristics

heat decomposition of toxic sulfur oxides, hydrolysis produces sulfuric acid, lung irritation

Chemical Properties

White powder

Health Hazard

Inhalation of dust irritates nose and mouth. Ingestion of large doses causes gastric irritation, nausea, vomiting, and purging. Dust irritates eyes and skin.

Reference quality standards

Aluminum sulfate Quality Standards (HG1-32-77)
Aluminum sulfate Quality Standards (HG1-32-77)
1, All levels of refined aluminum sulfate can be used for producing all levels of precipitation paper sizing agents, class A, B and C is used for water purification, in which arsenic (AS2O3) content should be not more than 0.01%.
2, Aluminum sulfate size: all through the 10 mm mesh sieve, among which the 8 mm sieve fine is not less than 98%, but can also be made bulk product according to user`s requirements.
3, Appearance and color of refined aluminum sulfate is white.
4, All levels of crude aluminum sulfate can be used for water purification, aluminum sulfate used for purification can not be produced by waste acid toxic substances.
5, Aluminum sulfate used in paper sizing, Al2O3 content should be more than 12%, iron content less than 0.2%, insolubles should be not more than 0.5%. Fine paper production requires iron content of aluminum sulfate should be less than 0.08%, this kind of aluminum sulfate is called iron-free aluminum sulfate.

Toxicity

ADI not specified (FAO/WHO, 2001).
GRAS (FDA, §182.1125,2000).
LD50 6207mg/kg (mice, by mouth)

Aluminum sulfate binder

Aluminum sulfate 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.
Due to the small number of new product, aluminum sulfate binding agent combination, it is very low intensity at room temperature. Before 500~600 ℃ and after drying heat, treatment intensity strength approaches. When at 700~800 ℃, as aluminate sulfate and sulphoaluminate begin to decompose, releasing SO3, [Al2 (SO4) 3-→ Al2O3 + 3SO3 ↑] to make the body produce binding loose structure, strength decreases. When above 1000 ℃, as the decomposition of aluminate sulfate and sulphoaluminate , the active Al2O3, prone to solid phase reaction, producing new substances and emergence of a liquid phase sintering, the strength improved significantly. when To 1200 ℃, the strength of combination is 3.5 to 5 times the strength of about 800 ℃.
Since aluminum sulfate hydrolysis reaction produces H2SO4, it can react with the raw material metal and oxide to produce hydrogen and water, adversely for brick material molding performance, so when aluminum sulfate binder ingredients are used for burndening, required at a certain temperature and humidity trapped material more than 24h .
Aluminum sulfate binder can be prepared castable, ramming material, plastic and unfired brick, ,etc. Its operating temperature varies as the aggregate and powder materials vary.

The method of producing

After aluminum hydroxide a post (or pure bauxite or kaolin) with sulfuric acid reacted, insolubles were filtered off and then crystallized.
Sulfuric acid production process is by grinding bauxite to a certain particle size, added into reactor for reaction with sulfuric acid, settling the reaction liquid, the supernatant was added sulfuric acid to neutral or slightly alkaline, then concentrated to about 115 ℃, solidified by cooling , crushing prepared products. A12O3 + 3H2SO4 → A12 (SO4) 3 + 3H2O
InChI:InChI:1S/2Al.3H2O4S/c;;3*1-5(2,3)4/h;;3*(H2,1,2,3,4)/q2*+3;;;/p-6

10043-01-3 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Aldrich (202614)  Aluminumsulfate  99.99% trace metals basis 10043-01-3 202614-100G 8,628.75CNY Detail
Aldrich (202614)  Aluminumsulfate  99.99% trace metals basis 10043-01-3 202614-25G 751.14CNY Detail
Aldrich (202614)  Aluminumsulfate  99.99% trace metals basis 10043-01-3 202614-5G 242.19CNY Detail
Alfa Aesar (44563)  Aluminum sulfate, anhydrous, 99.99% (metals basis)    10043-01-3 500g 10116.0CNY Detail
Alfa Aesar (44563)  Aluminum sulfate, anhydrous, 99.99% (metals basis)    10043-01-3 100g 2630.0CNY Detail
Alfa Aesar (44563)  Aluminum sulfate, anhydrous, 99.99% (metals basis)    10043-01-3 25g 880.0CNY Detail
Alfa Aesar (44563)  Aluminum sulfate, anhydrous, 99.99% (metals basis)    10043-01-3 5g 252.0CNY Detail

10043-01-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017

1.Identification

1.1 GHS Product identifier

Product name aluminium sulfate (anhydrous)

1.2 Other means of identification

Product number -
Other names Aluminium sulfate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Food additives
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:10043-01-3 SDS

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