Proper storage of ATMP (liquid or solid form) is essential to maintain its effectiveness and ensure safety. Below are the key guidelines:
1. Storage Conditions
| Parameter | Requirement | Reason |
|---|---|---|
| Temperature | 5–40°C (avoid freezing or high heat) | Prevents crystallization (solid form) or degradation. |
| Container | Plastic (HDPE) or Stainless Steel | ATMP is acidic (pH ~2) and can corrode carbon steel. |
| Sealing | Tightly sealed | Prevents moisture absorption (solid form) or evaporation (liquid). |
| Ventilation | Dry, well-ventilated area | Avoids vapor accumulation (especially for liquid ATMP). |
| Light Exposure | Protect from direct sunlight | UV light may degrade ATMP over time. |
2. Shelf Life & Stability
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Liquid ATMP: Typically 12–24 months if stored properly.
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Solid ATMP (Crystalline): Up to 24 months in dry conditions.
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Check before use: If discolored (brownish) or has sediment, test efficacy before application.
3. Safety Precautions
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Personal Protection: Wear gloves and goggles when handling (ATMP is corrosive to skin/eyes).
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Spill Response: Neutralize with alkaline substances (e.g., soda ash) and rinse with water.
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Incompatible Materials: Avoid contact with strong oxidizers (e.g., bleach) or reactive metals (e.g., aluminum).
4. Special Cases
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Freezing Conditions:
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If liquid ATMP freezes, thaw at room temperature and mix thoroughly before use.
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Bulk Storage:
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For large tanks, use FRP (Fiberglass Reinforced Plastic) or PP-lined steel to prevent corrosion.
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5. Transportation
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UN Number: Not classified as hazardous for transport, but label as “Corrosive” (pH <2).
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Packaging: Use HDPE drums or IBC tanks with secure closures.
Summary of Best Practices
✔ Store in HDPE/SS containers, sealed and dry.
✔ Maintain moderate temperature (5–40°C).
✔ Avoid contact with oxidizers, metals, and moisture.
✔ Monitor shelf life and test degraded product.
Proper storage ensures ATMP remains effective for scale inhibition in water treatment systems. For long-term bulk storage, consult the manufacturer’s SDS (Safety Data Sheet).