PAAS packaging and storage environment

To maintain the stability and effectiveness of PAAS, proper packaging and storage conditions are critical. Below are the key requirements:

1. Packaging Specifications

Aspect Details

Material Polyethylene (PE) drums or plastic-lined metal containers (anti-corrosion).

Form Liquid (aqueous solution, typically 30–50% concentration) or solid powder.

Sealing Tightly sealed to prevent moisture absorption (powder) or evaporation (liquid).

Labeling Clearly marked with:

- Product name (PAAS or Sodium Polyacrylate)

- Concentration (%)

- Batch number & expiry date

2. Storage Conditions

Factor Requirements Risks if Not Followed

Temperature 5–30°C (optimal). Avoid freezing (<0°C) or high heat (>40°C). Powder: Caking

Liquid: Polymer degradation

Humidity <60% RH (powder must be kept dry). Powder absorbs moisture → lumps/hardening.

Light Store in darkness (use opaque containers or shaded warehouse). UV exposure → breakdown of polymer chains.

Ventilation Well-ventilated area (avoid confined spaces with acid/alkali fumes). Chemical reactions with volatile substances.

3. Shelf Life & Stability

Liquid PAAS: 12–24 months (if unopened and stored properly).

Powder PAAS: 24 months (must avoid moisture).

After Opening:

Liquid: Use within 6 months (reseal tightly).

Powder: Use within 3 months (keep in a desiccator).

4. Handling Precautions

Personal Protection: Wear gloves & goggles (mild irritant to skin/eyes).

Spill Management: Absorb with inert material (sand, sawdust) and rinse with water.

Incompatible Materials: Avoid contact with:

- Strong oxidizers (e.g., hypochlorite)

- Cationic polymers (risk of precipitation).

5. Transport Requirements

Liquid PAAS: Non-hazardous transport (UN number not required).

Powder PAAS: Keep containers upright to prevent leakage.

Avoid Extreme Temperatures: No direct sunlight or freezing during shipping.

Key Reminders

Powder PAAS is more sensitive to humidity → store in a moisture-proof environment.

Liquid PAAS may stratify over time → mix gently before use.

Do not store near acids/bases → neutral pH (6–8) is ideal for long-term stability.

For specific storage advice (e.g., tropical climates), consult the manufacturer’s SDS (Safety Data Sheet).