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What is the difference between Ammonium Persulfate and Sodium Persulfate?

Views: 7     Author: Site Editor     Publish Time: 2023-10-27      Origin: Site

Ammonium Persulfate and Sodium Persulfate are two commonly used chemical compounds in various industries, and while their names might sound similar, they have distinct differences in terms of composition, properties, applications, and more.

● Chemical Composition

Ammonium Persulfate:

Ammonium Persulfate, chemically represented as (NH4)2S2O8, is a white crystalline salt that contains ammonium ions and persulfate ions.

Sodium Persulfate:

Sodium Persulfate, on the other hand, is represented as Na2S2O8 and consists of sodium cations and persulfate ions. It is also a white crystalline substance.

● Physical Properties

Ammonium Persulfate:

Ammonium Persulfate is highly soluble in water and exhibits excellent oxidizing properties. It is often used in its powdered form.

Sodium Persulfate:

Sodium Persulfate is also soluble in water and shares similar oxidizing properties. It is available as a white crystalline powder.

● Applications

Ammonium Persulfate:

Ammonium Persulfate is widely used in the manufacturing of plastics, as a polymerization initiator, and in the electronics industry for etching printed circuit boards.

Sodium Persulfate:

Sodium Persulfate finds its applications in cosmetics, as a hair bleach, and in the textile industry for desizing and bleaching.

● Safety and Handling

When working with these compounds, it's crucial to consider safety measures.

Ammonium Persulfate:

Ammonium Persulfate can irritate the skin and eyes, and inhalation of its dust can lead to respiratory issues. It should be handled with care, wearing appropriate protective gear.

Sodium Persulfate:

Sodium Persulfate also poses risks when mishandled, causing skin and eye irritation. Adequate protection is necessary during its use.

● Storage and Shelf Life

Proper storage is essential to maintain the integrity of these chemicals.

Ammonium Persulfate:

Ammonium Persulfate should be stored in a cool, dry place, away from incompatible materials. Its shelf life can be extended with suitable storage conditions.

Sodium Persulfate:

Sodium Persulfate should be stored in a dry, well-ventilated area, separated from reducing agents. Proper storage prolongs its shelf life.

● Cost Comparison

The cost of ammonium and Sodium Persulfate may vary based on factors such as purity and quantity. Generally, Sodium Persulfate tends to be more cost-effective.

● Key Differences

Chemical Composition:

Ammonium Persulfate contains ammonium ions, while Sodium Persulfate contains sodium ions. This fundamental difference in composition can significantly affect their compatibility in various chemical reactions.


While both compounds are employed in the electronics industry for PCB etching, Ammonium Persulfate is favored in the production of polymers, whereas Sodium Persulfate is the preferred choice for hair bleaching products.

Chemical Reactions:

Ammonium Persulfate is a popular choice as an initiator in various polymerization reactions, enabling the creation of a wide range of plastics and synthetic materials. Sodium Persulfate, on the other hand, is valued for its strong oxidizing properties, making it effective in hair products.


In summary, while Ammonium Persulfate and Sodium Persulfate share some similarities, their differences in composition, properties, applications, and environmental impact are significant. Making the right choice between them depends on the specific needs of your project, safety considerations, and cost factors.


1. Are ammonium and Sodium Persulfate interchangeable in all applications?

While they share some similarities, their specific properties and applications may vary. It is important to consider the unique requirements of your project.

2. How should I store ammonium and Sodium Persulfate to ensure their longevity?

Proper storage in dry, well-ventilated areas away from incompatible materials is essential to extend their shelf life.

3. What safety precautions should I take when working with these chemicals?

Use appropriate protective gear to protect against skin and eye irritation. Follow safety guidelines and regulations.

4. Can these chemicals be disposed of down the drain?

No, both chemicals can have negative environmental impacts, and proper disposal methods should be followed.

5. Which is more cost-effective, Ammonium Persulfate, or Sodium Persulfate?

Generally, Sodium Persulfate is considered more cost-effective, but the exact cost may vary based on purity and quantity.

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Qi Di Chem (Aozun Chemical) was established in 2003, is specialized in manufacturing persulfate series products (Ammonium Persulfate, Sodium Persulfate, Potassium Persulfate).


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