Shandong Heyi Gas Co., Ltd.
Shandong Heyi Gas Co., Ltd.

Understanding Non-Ferric Alum Powder: Uses, Benefits, and Differences

Nov 28 , 2024
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Non ferric alum powder is a highly versatile compound widely used across various industries. As a purer form of aluminum sulfate, it offers unique advantages in specific applications such as paper manufacturing and water treatment. This article delves into its key uses, benefits, and how it differs from other alum types.

What is Non Ferric Alum Powder?

Non ferric alum powder is a refined form of aluminum sulfate, free from iron impurities. Unlike ferric alum, which contains iron, non ferric alum is manufactured from aluminum trihydrate, making it suitable for applications that require high purity. The production process involves treating aluminum trihydrate with sulfuric acid under controlled conditions, ensuring a clean and effective product.

This compound finds its primary use in high grade paper manufacturing, particularly for loading and sizing purposes. Its purity ensures consistent quality in paper production, making it indispensable for premium grade products.

Key Applications of Non Ferric Alum Powder


  • Paper Industry: Non ferric alum is essential in the production of fine paper, ensuring smooth surfaces and optimal print quality.

  • Water Treatment: While ferric alum is commonly used for industrial water treatment, non ferric alum can also be applied when iron free treatment is required.

  • Food Preservation: Though less common, alum powder, in general, is used in food applications such as pickling to improve texture and flavor.

The versatility stems of non ferric alum powder from its iron free composition, which makes it ideal for situations where iron content could be a concern, such as sensitive manufacturing processes.

How Non Ferric Alum Differs from Ferric Alum

The primary difference between non ferric and ferric alum lies in their iron content. Ferric alum contains iron derived from bauxite as its raw material, while non ferric alum is iron free and made from aluminum trihydrate. This difference impacts their applications:


  • Ferric Alum: Preferred for industrial water treatment where minor iron traces are acceptable.

  • Non Ferric Alum: Chosen for applications requiring high purity, such as fine paper production and sensitive processes.


Furthermore, non ferric alum is also more stable in storage, as it avoids the discoloration or reactivity issues associated with ferric alum.


Non ferric alum powder is a critical material in industries that demand high purity compounds. From premium paper manufacturing to specialized water treatment applications, its versatility and reliability make it the preferred choice for processes where iron contamination must be avoided. By understanding its uses and benefits, businesses can ensure they select the most suitable alum type for their needs.




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