Instructions for use of PBTC.Na4 solid

PBTC.Na₄ is a high-performance organic phosphonate scale and corrosion inhibitor, widely used in cooling water systems, boiler water treatment, and reverse osmosis (RO) systems.

1. Product Overview

Chemical Formula: C₇H₇O₉PNa₄

Appearance: White crystalline powder

Solubility: Highly soluble in water (>50% at 20°C)

pH (1% solution): ~9.0–11.0

Active Content: ≥88% (typical industrial grade)

2. Key Applications

✔ Scale Inhibition (CaCO₃, CaSO₄, BaSO₄)

✔ Corrosion Inhibition (for carbon steel, copper, stainless steel)

✔ Stabilization of Iron & Manganese

✔ Compatibility with Chlorine & Other Oxidizing Biocides

3. Dosage Guidelines

Application Recommended Dosage (mg/L) Method

Cooling Water Treatment 5–20 mg/L (as PBTC.Na₄) Continuous dosing via metering pump

Boiler Water Treatment 2–10 mg/L Blowdown control + automated feed

RO Antiscalant 1–5 mg/L Pre-treatment dosing

Industrial Cleaning 0.1–0.5% (w/w) Dissolved in cleaning solution

4. Preparation & Handling

Dissolution Method

Pre-dissolve PBTC.Na₄ in clean water (recommended 10–20% solution).

Stirring: Use mechanical agitation for faster dissolution.

Temperature: Works best at 20–50°C (avoid boiling).

Safety Precautions

Personal Protection:

Wear gloves (nitrile), safety goggles, and dust mask when handling powder.

Avoid inhalation of dust (may cause mild respiratory irritation).

Storage:

Keep in sealed, dry containers (HDPE drums or bags).

Store at <30°C, away from moisture and oxidizing agents.

5. Compatibility & Stability

✔ Compatible with:

Other phosphonates (HEDP, ATMP)

Polymeric dispersants (PAA, HPMA)

Most oxidizing biocides (e.g., chlorine, bromine)

✖ Avoid Mixing With:

Strong acids (may precipitate)

High concentrations of polyvalent cations (Ca²⁺, Fe³⁺) before dilution

6. Performance Optimization

pH Range: Effective at pH 7–10 (best performance in alkaline conditions).

Temperature Stability: Stable up to 100°C (higher temps may require additional inhibitors).

Synergistic Blends:

For scale control: Combine with PAA (polyacrylic acid).

For corrosion control: Blend with zinc salts or molybdate.

7. Environmental & Regulatory Compliance

Biodegradability: Low (persistent in water; requires proper treatment before discharge).

Regulatory Approvals:

EPA (USA), REACH (EU), GB/T 50050 (China) compliant for industrial water treatment.

Summary of Best Practices

✅ Pre-dissolve before adding to systems.

✅ Monitor dosage based on water hardness & system conditions.

✅ Store properly to prevent caking/moisture absorption.

✅ Use PPE when handling solid form.

For customized formulations or technical support, consult your supplier. Let me know if you need further details!