Sodium Persulphate | High Purity, Bulk Supply, Best Price

What buyers are really asking about sodium persulphate right now

If you work in PCB etching, polymerization, or in-situ remediation, you already know the market’s gotten choosier. Cost pressure is up, specs are tighter, and lead times… well, unpredictable. To be honest, that’s why conversations around sodium persulphate have become oddly practical lately—folks want proof, not promises.

Quick product snapshot (engineer-friendly)

Where it’s going (trend check)

Demand is steady from PCB fabs and water treatment; remediation projects are actually ticking up again. Many customers say consistent copper etch rates and low metal impurities are the make-or-break. For sodium persulphate initiator users in emulsion polymers, the push is toward tighter particle size control and cleaner color (less Fe, less Mn).

Typical process flow and QC

• Materials: DI water, sodium persulphate, optional buffer/complexant (PCB); co-initiator or activator (polymerization); alkaline activation (ISCO) as needed.
• Methods:
  • PCB etching: 180–220 g/L sodium persulphate at 45–50°C; pH ~1–2; agitation; monitor Cu2+ buildup.
  • Polymerization: 0.1–1.0% w/w initiator, 60–90°C; redox systems for low-temp starts.
  • ISCO: 10–200 g/L injection, site-specific; activation via alkaline or chelated Fe depending on matrix.
• Testing standards: Active oxygen via iodometric titration; Fe by ICP-OES (ISO 11885); moisture by Karl Fischer (ISO 760). SDS hazard tags: Ox. Sol. 3, Skin Irrit. 2, Eye Irrit. 2, Resp. Sens. 1 (verify per supplier SDS/ECHA).

Vendor snapshot (indicative)

Data ≈ indicative; confirm with current COA/contract.

Applications and advantages

• PCB copper etchant: clean sidewalls, less undercut vs chloride systems; predictable rate.
• Polymerization initiator: sodium persulphate delivers low impurity color and tight MWD with proper redox pairing.
• Textiles & hair lightening: strong yet controllable oxidizer (follow salon-grade formulations and safety).
• ISCO remediation: persistent radicals; effective for BTEX, chlorinated solvents with proper activation and demand analysis.

Case notes (real plant talk)

One mid-size Southeast Asia PCB shop cut etch defects by ~18% after moving to 220 g/L sodium persulphate at 48°C and weekly Fe checks via ICP-OES. Another site (EU, brownfield) used 40 g/L sodium persulphate with alkaline activation; rebound tracking showed TCE mass reduction >80% over two quarters. Not every site sees that, but the ops team said the consistency was “surprisingly boring”—which is a compliment.

Customization and support

Common requests: tighter Fe spec (≤5 ppm), anti-caking package, drum vs. supersack, and REACH/RoHS paperwork. Fizachem’s team, from what I hear, will do tailored COAs and staggered shipments—handy when the warehouse is packed.

Safety and storage (don’t skip)

Keep sodium persulphate cool, dry, away from organics/reducers. Use local exhaust, gloves, goggles; respirator if dust levels creep up. Always align with your SDS and site SOPs.

Citations

1. ECHA Substance Information: Peroxydisulfuric acid, disodium salt (CAS 7775-27-1)
2. ITRC: In Situ Chemical Oxidation guidance (persulfate applications)
3. ISO 11885: Water quality — Determination of selected elements by ICP-OES
4. ISO 760: Determination of water (Karl Fischer method)
5. IPC-6012: Rigid printed boards performance spec