Sodium Persulfate, a strong oxidizer, is widely used in electronic circuit board cleaning, water treatment, textile bleaching, and other fields. Its high oxidation efficiency makes it indispensable in industry, but its sensitivity to humidity poses preservation challenges. Sodium Persulfate is prone to hygroscopic caking in high-humidity environments, leading to reduced oxidation performance and even decomposition. The 25kg moisture-proof packaging is designed to ensure product stability during transportation and storage through high-barrier materials and technical measures. However, once the package is opened, the product is exposed to external factors like humidity and temperature, significantly increasing the risk of performance degradation. The following detailed storage solution aims to help users extend the product's service life and reduce waste.

I. Basic Properties of Sodium Persulfate and Principles of Moisture-Proof Packaging

Sodium Persulfate's strong oxidizing power and chemical stability drive its industrial applications, but its hygroscopic decomposition under high humidity complicates storage. Manufacturers typically employ moisture-proof packaging technologies to maintain product stability during transit and storage.

Packaging Materials and Technology: The core material of moisture-proof packaging is polyethylene, which offers advantages in chemical stability, temperature resistance, and physical strength under extreme conditions. Heat-sealing technology further enhances airtightness, and high-barrier properties effectively isolate external moisture and oxygen, ensuring Sodium Persulfate remains stable before opening.

Fujian ZhanHua Chemical's Expertise: As a leading domestic Sodium Persulfate producer, Fujian ZhanHua Chemical continuously innovates in moisture-proof packaging technologies, ensuring each package remains dry and chemically stable before opening. Its advanced packaging processes and strict quality control provide users with highly stable products.

II. Core Challenges in Post-Opening Storage

Storing Sodium Persulfate after opening faces two main challenges: environmental factors and operational risks.

Environmental Factors: Humidity, temperature, and light are primary concerns. High humidity causes hygroscopic caking, while temperature fluctuations may induce condensation inside the package, accelerating degradation. Light exposure can also affect chemical stability.

Operational Risks: Improper human operations increase storage risks, such as frequent opening, tool contamination, or insufficient container tightness, which expose the product to moisture and exacerbate hygroscopic and decomposition risks.

III. Detailed Post-Opening Storage Solutions

Storage approaches should be adapted to different usage scenarios:

1. Short-Term Use (1–7 Days)

Key Measures: Minimize exposure time and enhance airtightness.

Implementation: Use sealed plastic buckets (avoid metal containers). Store in a dry, cool environment with relative humidity below 50% and away from direct sunlight. To reduce exposure, adopt a "layered method" (seal immediately after use) or use dry utensils for material transfer.

2. Long-Term Storage (Over 7 Days)

Enhanced Measures: Require additional precautions for prolonged stability.

Implementation: Use a vacuum sealer for secondary packaging or add desiccants (e.g., silica gel) to assist sealing. Maintain storage temperature below 30°C to avoid condensation from temperature fluctuations. Regularly inspect product condition and address caking or discoloration promptly.

IV. Emergency Handling and Waste Management

Moisture-Related Issues:For slight caking: Grind the product in a dry, ventilated area (do not heat).For severe moisture damage: Dispose of as hazardous waste to prevent environmental pollution.

Waste Disposal:Contaminated packaging: Treat as hazardous waste.Clean packaging: Recycle according to regulations.

A scientific storage solution for 25kg moisture-proof packaged Sodium Persulfate after opening not only extends its service life but also ensures efficiency and safety in industrial applications. Through proper environmental control, container selection, and operational protocols, users can effectively reduce the risk of hygroscopic degradation. Fujian ZhanHua Chemical's moisture-proof packaging technologies and storage recommendations provide robust support for users, enabling better utilization of Sodium Persulfate across industries.