Liquid aluminum sulfate

Liquid iron free aluminum sulfate is a common chemical and not a hazardous chemical. After dissolving in water, it becomes acidic and belongs to a weak acid. However, we should pay attention.

Health hazards: Irritation to eyes and mucous membranes. Accidental ingestion of large amounts of aluminum sulfate can irritate the mouth and stomach. Explosion hazard: This product is non flammable and irritating.

Hazardous characteristics: No special combustion or explosion characteristics. High temperature synthesis produces toxic sulfide smoke. Harmful combustion products: unknown natural synthetic products.

Fire extinguishing method: Firefighters must wear full body fire-resistant and anti-virus clothing and extinguish the fire in the upwind direction. When extinguishing a fire, try to move the container from the fire scene to an open area.

The liquid of industrial aluminum sulfate, namely aluminum sulfate containing iron, has an iron content of about 0.25. The newly produced product is a light green color, and as the storage time increases, there will be crystal precipitation due to the influence of external temperature. The color will darken.

Liquid iron free aluminum sulfate decomposes into aluminum oxide and sulfur trioxide at 770 ℃.

There are anhydrous and octadecyl hydrates. The anhydrous material is a colorless orthorhombic crystal system. Dissolved in water, the aqueous solution is acidic and slightly soluble in ethanol. The solubility in water increases with temperature. Octadecyl hydrate (al2 · (SO4) 3 · 18H2O) is a colorless monoclinic crystal. Soluble in water, insoluble in ethanol. Due to hydrolysis, the aqueous solution becomes acidic.

Relative density (water=1): 2.71

Dissolve grams per 100 milliliters of water at different temperatures (℃):

chemical property

Weathering process makes it difficult for crystal water to be lost. Relatively stable. It will lose water when heated. At high temperatures, it will decompose into aluminum oxide and sulfur oxides.

When heated to 770 ℃, it begins to decompose into alumina, sulfur trioxide, sulfur dioxide, and water vapor.

An aqueous solution is acidic. After hydrolysis, aluminum hydroxide is generated. Long term boiling of aqueous solution can produce basic aluminum sulfate. Non toxic, dust can irritate the eyes.