Potassium Aluminum Sulfate

The chemical compound known as potassium aluminum sulfate dodecahydrate is commonly referred to by its scientific name. In order to maintain the integrity of the information presented, it is important to rearrange the content while still staying true to the original text.

Molecular formula: AlK(SO4)2·12H2O

Molecular weight: 474.39 CAS NO: 7784-24-9

Physical and chemical properties

Potassium aluminum sulfate appears as colorless crystals or powder, which possess no odor but present a slightly sweet and astringent taste. When exposed to dry air, it might lose some of its crystal water, while humid air can dissolve it easily. The substance can be dissolved in water and glycerol, but it creates an acidic solution with aluminum hydroxide colloid precipitation following hydrolysis. The melting point of potassium aluminum sulfate reaches 92.5℃. Drying at 60-65 °C leads to a loss of 9 water molecules, while complete dehydration occurs at 200°C, resulting in the elimination of all 12 crystal water molecules. At higher temperatures, it decomposes further, leading to different compounds.

Usage

In the paper industry, potassium aluminum sulfate is commonly employed as a sizing agent. When combined with rosin emulsion, it effectively enhances the water resistance of paper. This additive is extensively utilized to improve the paper's ability to resist water by acting as a coating agent.

Aluminum sulfate, also known as alum, has a wide range of industrial applications. It is commonly used as a preservative, astringent, and hemostatic agent in the pharmaceutical industry. Its aqueous solution is highly effective in preventing rice dermatitis. The printing and dyeing industry utilizes alum as a mordant, retarder, and resist. It is also an essential raw material for producing other aluminum salts, matches, and paints.
Aluminum sulfate plays a significant role in analytical chemistry as a chemical reagent for determining the presence of iron, manganese, antimony, and aluminum. Moreover, it acts as a hardener in bacterial dyeing processes. Its multifaceted applications make it crucial to many industries today.

Another effective water purifying agent is potassium aluminum sulfate, commonly known as alum. This traditional substance is often used as a coagulant to purify warm and murky water. Its coagulating properties enable it to bind together fine particles, making them easier to remove from the water. As a result, water treated with alum becomes clearer and more drinkable. Overall, potassium aluminum sulfate has been a reliable and effective tool for water purification for many years.

The packaging for this product entails the use of a 25kg outer plastic woven bag, which is further lined with a polyethylene plastic bag.

Proper storage and transportation is crucial to maintaining the quality of the product. To ensure optimal storage, it should be stored in a dry, well-ventilated, and clean warehouse. Be sure to pack it lightly and handle it with care to prevent exposure to moisture and heat. When transporting the product, take the necessary precautions to prevent damage or contamination. It's important to prioritize the safety and integrity of the product during storage and transportation.

It is important to store it separately from toxic substances when it is exposed to rain or moisture.

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