As a specialized chemical raw material characterized by exceptionally high chemical activity and strong reducing properties, high-purity zinc powder (purity $\ge 99.99\%$) plays an increasingly vital role in the 2026 industrial landscape. Driven by the global green transition, zinc powder is no longer restricted to traditional anti-corrosive coatings, chemical catalysis, and metallurgy; it has emerged as a “blue ocean material” flowing into next-generation energy storage (such as zinc-air batteries) and high-end smart manufacturing supply chains.

However, high activity is a double-edged sword. While granting superior industrial performance, it introduces severe risks to corporate warehousing and safety protocols. To guarantee operational safety and preserve product efficacy, enterprises must strictly implement the following meticulous preservation guidelines:

1. Absolute Moisture and Water Protection: Eliminating the Root of “Hydrogen Explosions”

Water is the ultimate nemesis of zinc powder.

• Chemical Risk: When exposed to water, ambient moisture, acids, or alkalis, zinc powder undergoes an exothermic reaction, generating highly flammable and explosive hydrogen gas ($H_2$). In sealed drums or confined warehouses, accumulated hydrogen can trigger catastrophic physical and chemical explosions from the slightest spark.

• Warehousing Protocol: Storage facilities must be located on high, dry ground and equipped with industrial-grade dehumidifiers to keep relative humidity strictly under control. Any roof leaks or floor moisture seepage must be completely prevented.

2. Container Sealing and Dynamic Monitoring of “Drum Bloating”

• Hermetic Packaging: Zinc powder is typically packaged in steel or fiber drums lined with double-sealed plastic bags. After each material extraction, operators must re-tie the inner bag tightly and lock the drum lid within the shortest timeframe possible.

• Preventing Drum Expansion: Stored drums require routine inspections. If a drum exhibits slight swelling (commonly known as “bloating”), it indicates internal hydrogen generation due to moisture. Trained personnel must slowly vent the pressure and re-seal the container under strict anti-spark and explosion-proof conditions.

3. Segregation of Incompatible Materials: Constructing a Chemical “Firewall”

As a potent reducing agent, zinc powder must never be co-stored with the following hazard classes:

1. Strong Oxidizers: Such as potassium permanganate, potassium chlorate, and nitrates; contact can trigger spontaneous combustion or explosions.

2. Corrosive Acids and Alkalis: Both inorganic acids (hydrochloric, sulfuric) and strong bases react violently with zinc powder.

3. Halogens and Flammable Liquids: Materials such as fluorine, chlorine, gasoline, and alcohol must be isolated via complete physical barriers.

4. Advanced Fire Suppression: Strictly Ban “Water and Carbon Dioxide”

When a metal zinc powder fire occurs, conventional firefighting instincts can lead to disastrous consequences.

• Prohibited Mediums: Never use water, foam, or carbon dioxide ($CO_2$) extinguishers. At elevated temperatures, burning zinc strips oxygen from water and carbon dioxide, accelerating the release of hydrogen and carbon monoxide, which causes the fire to expand exponentially or explode.

• Correct Response: Warehouses must be heavily stocked with Class D specialized metal dry powder extinguishers, dry sand, dry stone powder, or cement. In an emergency, the fire must be smothered using dry sand to completely cut off oxygen.

5. Explosion-Proof Electrics and Static Elimination

• Hardware Certification: All lighting, ventilation, and power installations within the storage and dispensing zones must utilize certified explosion-proof electrical equipment, with control switches positioned outside the hazardous zone.

• Static Dissipation: Fine zinc powder suspended in the air easily forms an explosive dust-air mixture. During discharging, batching, or conveying, all pipelines and vessels must feature reliable electrostatic grounding. Operators are strictly required to wear anti-static uniforms and specialized anti-static footwear.