As an important strong oxidant, industrial-grade Potassium Persulfate is widely used in various fields such as polymerization initiators, bleaching agents, and hair dyes. However, due to its active chemical properties, improper storage can easily lead to a decline in its performance. As a professional supplier with years of experience in the chemical industry, Fujian ZhanHua Chemical, based on its high-quality Potassium Persulfate production, combines practical application experience to sort out a scientific storage plan for users. The following will share 5 practical storage tips to extend the shelf life of industrial-grade Potassium Persulfate.
I. Choose the Appropriate Storage Container
The storage container for industrial-grade Potassium Persulfate is crucial. It is recommended to use a dry and airtight container for storage. An airtight container can effectively prevent moisture and impurities in the external air from entering, thus effectively delaying the moisture absorption process. At the same time, the material of the container should be carefully selected, and materials that are corrosion-resistant and do not react chemically with Potassium Persulfate, such as high-density polyethylene, should be used. Ensure that the container has good sealing performance, regularly check whether the container is damaged or leaking, and if any problems are found, replace the container in a timely manner to avoid deterioration of Potassium Persulfate due to container issues. Fujian ZhanHua Chemical uses high-density polyethylene inner bags in the packaging design of Potassium Persulfate, with heat-sealed packaging and a PE outer bag, ensuring that the product is not easy to get damp or damaged during transportation and storage.
II. Maintain a Dry Storage Environment
Potassium Persulfate is hygroscopic. Once in a high-humidity environment, it will absorb moisture from the air, which may not only cause the product to agglomerate but also significantly accelerate its chemical decomposition, leading to a decrease in the content of effective persulfate ions and thus affecting the performance. The ideal storage place for industrial-grade Potassium Persulfate should have good ventilation conditions. Avoid choosing basements, semi-basement warehouses, or areas close to drainage systems, as these locations are susceptible to groundwater vapor or condensed water, resulting in increased environmental humidity. It is also recommended to lay moisture-proof pads or wooden pallets on the warehouse floor to isolate the goods from the ground and reduce moisture penetration; the walls can be coated with moisture-proof coatings to further block the source of moisture.
In terms of packaging sealing, users are particularly reminded that unopened whole packages of products should be stored on the upper layers of shelves, away from damp areas on the ground; opened packages should be used first to avoid long-term exposure. They can be replaced with small airtight containers or re-sealed.
III. Take Good Light-shielding Measures
The chemical stability of Potassium Persulfate is closely related to light conditions. Ultraviolet rays in sunlight may accelerate its decomposition reaction. Therefore, it is recommended that the storage place be a warehouse without windows or with small windows. The internal lighting of the warehouse should use low-illumination LED lights or energy-saving lamps with low ultraviolet output. It should be noted that the lighting equipment must have explosion-proof functions.
In terms of goods placement, it is necessary to avoid stacking Potassium Persulfate near windows or doorways to prevent direct sunlight. The stacking height should not be too high to avoid leakage due to pressure deformation; the distance between stacks should be ≥0.5 meters, and the distance from the wall and roof should be ≥1 meter, which is convenient for ventilation and emergency treatment. For the transportation link, transport vehicles should be equipped with light-shielding canvas, especially during summer transportation, to avoid the strong sunlight at noon and reduce the impact of light on the product during transportation.
IV. Isolate Organic Substances and Reducing Substances
Potassium Persulfate is a strong oxidant and must not come into contact with organic substances, rust, a small amount of metals, and other reducing substances, to prevent triggering its violent decomposition, generating a large amount of heat and oxygen, which may pose risks of combustion, explosion (in confined spaces), or igniting nearby combustibles. The warehouse storing Potassium Persulfate should be kept clean, and other chemical substances should be avoided, especially organic solvents, wood, paper, and other organic substances, as well as rust, metal powder, and other reducing substances. If other chemicals need to be stored in the warehouse, strict zoning management should be carried out to ensure that there is a sufficient safety distance between Potassium Persulfate and other chemicals, and effective isolation measures should be taken, such as setting up isolation walls or using sealed storage cabinets. Similarly, during handling and storage, attention should be paid to avoiding contact between Potassium Persulfate and organic substances and reducing substances to ensure safe storage. Fujian ZhanHua Chemical will strictly package Potassium Persulfate when shipping to minimize the risk of accidental contact with other substances during transportation.
V. Keep Away from Heat Sources
Potassium Persulfate is prone to decomposition under high-temperature conditions, and its decomposition is an exothermic reaction that releases oxygen. This will not only reduce the product purity (decrease in active ingredients) but also significantly increase safety risks: the release of oxygen may cause a sudden increase in pressure (with explosion risk), and the released oxygen and heat can easily ignite nearby combustibles or intensify fires. Therefore, it should be kept away from heat sources during storage. Avoid placing Potassium Persulfate near high-temperature equipment such as heaters, boilers, etc. At the same time, attention should also be paid to avoiding excessively high temperatures in the warehouse, and the temperature of the storage environment should be kept relatively stable.
In the high-temperature season of summer, appropriate cooling measures can be taken, such as installing air conditioners or ventilation equipment to reduce the temperature in the warehouse. By keeping away from heat sources and maintaining a relatively stable temperature in the storage environment, the risk of decomposition of Potassium Persulfate due to high temperatures can be effectively reduced, and its shelf life can be extended. The Potassium Persulfate produced by Fujian ZhanHua Chemical undergoes strict quality inspection before leaving the factory to ensure that the product can maintain good performance under reasonable storage conditions.
The storage of industrial-grade Potassium Persulfate is crucial for its shelf life and use effect. By selecting appropriate storage containers, maintaining a dry storage environment, taking good light-shielding measures, isolating organic substances and reducing substances, and keeping away from heat sources, its shelf life can be effectively extended, and its strong oxidation characteristics and reaction activity can be maintained.