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Aluminum sulfate

Name: Aluminum sulfate
SKU: 0

Basic Information

CAS No.: 10043-01-3
Molecular Formula: Al2O12S3
Molecular Weight: 342.15

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Product Details

Aluminum Sulfate is a white or off-white crystalline solid, highly soluble in water with acidic solution. It is an efficient inorganic flocculant widely used in water treatment, paper making, textile dyeing and tanning.

Chemical Properties

Property	Value
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°C
Solubility	Easily soluble in cold water, easily soluble in hot water, practically insoluble in ethanol (96%).
Acidity Coefficient (pKa)	3.6 [at 20 °C]
Form	Powder and/or lumps
Color	White
Specific Gravity	2.71
Odor	Odorless
Water Solubility	soluble
Sensitivity	Hygroscopic
Merck	14,366
Dielectric Constant	2.6 (Ambient)
Exposure Limit	NIOSH: TWA 2 mg/m³
Cosmetic Ingredient Function	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--0.12 at 20°C
CAS Database	10043-01-3 (CAS DataBase Reference)
EPA Chemical Substances Information	Aluminum sulfate (10043-01-3)

Safety Information

Property	Value
Hazard symbols	Xi, N
Hazard class codes	37/38-41-51/53-36/37/38
Safety descriptions	26-39-61-37/39-29
UN dangerous goods number	UN 1760 / 3077
WGK Germany	1
RTECS number	BD1700000
TSCA	TSCA listed
HS code	28332200
Storage class	8B - Non-combustible, corrosive substances
Hazard class (category)	Serious eye damage, Category 1 Corrosive to metals, Category 1
Hazardous substances data	10043-01-3 (Hazardous Substances Data)
Toxicity	Guinea pig, LD50, unreported: 490 mg/kg (Gigiena i Sanitariya. For English translation, see HYSAA. Vol. 43(4), p. 12, 1978)

Product Usage

Aluminum sulfate is a water-soluble inorganic compound with the chemical formula Al₂(SO₄)₃, appearing as white crystals or powder. It has a wide range of applications and low cost. Its core application is in the water treatment field as an efficient flocculant. The aluminum hydroxide colloid generated by hydrolysis can adsorb suspended solids, colloids and impurities in water, realizing the purification of drinking water, municipal sewage and industrial wastewater. It can also be used for water phosphorus removal to improve effluent quality. In the papermaking industry, as a precipitant and sizing agent, it can enhance the water resistance and strength of paper and reduce pulp loss. In addition, it can be used for soil improvement to adjust the pH value of alkaline soil; as a mordant in textile printing and dyeing to help dyes adhere; it is also an important component of foam fire extinguishers, and an auxiliary raw material in fields such as cosmetics and leather processing, with both practicality and economy.

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Aluminum sulfate

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