Iron-free Aluminum Sulfate

Product Information

The solid product of Iron-free Aluminum Sulfate  is white granular or lumpy, white glossy crystal. Stable in the air. 86.5 ℃ to lose part of the water of crystallization, 250 ℃ to lose all the water of crystallization. When heated, it expands violently and turns into spongy substance. When burned to red heat, it decomposes into sulfur trioxide and aluminum oxide. Weathered when the relative humidity is about 25% lower. Easily soluble in water, almost insoluble in ethanol, the solution is acidic. After boiling for a long time, there is insoluble alkali salt precipitation. Relative density 1.62. iron-free Aluminum sulfate is a widely used industrial reagent, often confused with alum (both potassium aluminum sulfate dodecahydrate). Aluminum sulfate is commonly used as a flocculant in purified drinking water and wastewater treatment facilities, as well as in the paper industry.

CAS No.: 10043-01-3
Name: Iron-free Aluminum Sulfate 
Molecular Formula:Al2(SO4)3·xH2O
Molecular weight:342.15 (as Al2(SO4)3)
Appearance:The solid product is white granular or lumpy
Properties: The product is white crystal easily soluble in water, insoluble in alcohol, aqueous solution is acidic, dehydration temperature is 86.5 ℃, heating to 250 ℃ loss of crystalline water, anhydrous aluminum sulfate heating to 300 ℃ began to decompose. Anhydrous material is white crystal with pearl luster.Appearance white

Aluminum oxide (Al2O3)℅≥15.8
Iron (Fe)≤0.0050
Water insoluble matter ℅≤0.10
PH value (1℅ of water solution) ≥3.0
Arsenic (As)℅≤0.0005
Heavy metals (Pb)℅≤0.002
Usage: Aluminum sulfate is mainly used as paper sizing agent and flocculant for drinking water, industrial water and wastewater treatment, and is also the raw material for the production of artificial gemstones and other aluminum salts, such as ammonia alum, potassium alum, refined aluminum sulfate. In addition, aluminum sulfate is also widely used in the production of high-quality clarifying agent, petroleum deodorant and decolorant, concrete waterproofing agent, high-grade paper whitening, titanium dioxide after film treatment and catalyst carrier.

Company Information

Our company's main export products include

(1) Petroleum Resin

Petroleum resins are named after the petroleum derivatives from which they are derived. They are characterized by low acid value, good miscibility, resistance to water, ethanol and chemicals, chemical stability to acids and bases, viscosity regulation and good thermal stability. Petroleum resins are generally not used alone, but as accelerators, modifiers, modifiers and other resins.

(2) Polymerized Ferrous Sulfate

Ferrous sulfate polymerization is a kind of inorganic polymer coagulant with superior performance, the morphology and properties are light yellow amorphous powdery solid, very soluble in water, 10% (quality) of the aqueous solution is reddish brown transparent solution, hygroscopicity. Ferrous sulfate polymerization is widely used in the purification and treatment of drinking water, industrial water, all kinds of industrial wastewater, municipal wastewater, sludge dewatering and so on.