What is Polyferric Sulfate CAS 10028-22-5?

Polyferric sulfate, commonly called PFS, is a polymeric iron-based coagulant supplied as a brownish-yellow powder, granular solid or liquid. It is used to remove suspended solids, turbidity, color and phosphorus from water and wastewater.

How does PFS differ from ordinary ferric sulfate or aluminum coagulants?

PFS contains pre-polymerized ferric species that provide stronger charge neutralization and bridging. It typically forms larger, denser flocs, can be effective over a wider pH range, and often requires a lower dosage than conventional coagulants.

Does PFS work in low-temperature or low-turbidity water?

Yes. Compared with some aluminum-based coagulants, PFS generally maintains faster hydrolysis and better coagulation in cold water and in low-turbidity or high-color conditions, although jar testing should still confirm the optimum dose.

What are the main applications?

It is used in drinking-water clarification, municipal sewage treatment, industrial wastewater treatment, phosphorus removal, sludge dewatering, textile and dyeing wastewater, papermaking wastewater and other coagulation applications.

Which grade and packaging are available?

The listing is industrial/water-treatment grade. Solid PFS is supplied in 25 kg or 50 kg PP woven bags with an inner PE liner, while liquid grades are available in 1,000 L IBCs or bulk tanks, with customization available.

How should PFS be stored and handled?

Store solid material in tightly closed bags in a dry, ventilated area away from moisture, alkalis and incompatible materials. PFS solutions are acidic and corrosive, so use corrosion-resistant dosing equipment, chemical-resistant PPE and eye protection, and follow the safety information.

Polyferric Sulfate CAS 10028-22-5

Polyferric Sulfate (PFS), CAS 10028-22-5, is a polymerized basic ferric salt supplied as a coagulant for drinking water and industrial wastewater treatment. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 10028-22-5
Synonyms: PFS, Polymeric Ferric Sulfate, Polyiron sulfate, Iron polymer flocculant, Basic ferric sulfate
Einecs: 233-072-9
Molecular Formula: [Fe₂(OH)ₙ(SO₄)₃₋ₙ/₂]ₘ
Grade: Industrial / Water Treatment Grade
Package: 25 kg / 50 kg PP woven bag with inner PE liner (solid); 1,000 L IBC / bulk tank (liquid), or customized as required

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Product Description

Polyferric Sulfate, CAS 10028-22-5, also known as PFS or polymeric ferric sulfate, is a polymerized basic ferric salt; the EC/EINECS number is 233-072-9.

Synonyms: PFS; polymeric ferric sulfate; polyiron sulfate; iron polymer flocculant; basic ferric sulfate.

CAS: 10028-22-5.

Molecular formula: [Fe₂(OH)ₙ(SO₄)₃₋ₙ/₂]ₘ.

It is a light-yellow to yellow-brown powder, granular solid or liquid used as a coagulant.

EC number: 233-072-9.

Iron (Fe³⁺) content is ≥20.0%; basicity (basic degree) is 10–20%.

A 1% aqueous solution has a pH of 2.0–3.0; water-insoluble matter is ≤0.5%.

It forms larger, denser flocs with higher settling velocity, even at low temperatures and in low-turbidity water.

It is used in drinking-water clarification, municipal sewage treatment and industrial wastewater treatment.

It is used in phosphorus removal, sludge dewatering, textile and dyeing wastewater and papermaking wastewater.

Compared with conventional coagulants, PFS provides stronger charge neutralization and bridging with a lower dosage.

PFS solutions are acidic and corrosive; use corrosion-resistant dosing equipment and chemical-resistant PPE.

Confirm physical form, total iron, basicity, pH, water-insoluble matter, reducing substances and heavy metals such as arsenic, lead and cadmium.

Store solid material in tightly closed bags in a dry, ventilated area away from moisture, alkalis and incompatible materials.

Confirm packaging with the requested quantity and destination requirements.

Document requirements should be confirmed from the current specification, SDS, COA or other product-specific files.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Polyferric Sulfate CAS 10028-22-5?

A: Polyferric sulfate, commonly called PFS, is a polymeric iron-based coagulant supplied as a brownish-yellow powder, granular solid or liquid. It is used to remove suspended solids, turbidity, color and phosphorus from water and wastewater.
Q:
How does PFS differ from ordinary ferric sulfate or aluminum coagulants?

A: PFS contains pre-polymerized ferric species that provide stronger charge neutralization and bridging. It typically forms larger, denser flocs, can be effective over a wider pH range, and often requires a lower dosage than conventional coagulants.
Q:
Does PFS work in low-temperature or low-turbidity water?

A: Yes. Compared with some aluminum-based coagulants, PFS generally maintains faster hydrolysis and better coagulation in cold water and in low-turbidity or high-color conditions, although jar testing should still confirm the optimum dose.
Q:
What are the main applications?

A: It is used in drinking-water clarification, municipal sewage treatment, industrial wastewater treatment, phosphorus removal, sludge dewatering, textile and dyeing wastewater, papermaking wastewater and other coagulation applications.
Q:
Which grade and packaging are available?

A: The listing is industrial/water-treatment grade. Solid PFS is supplied in 25 kg or 50 kg PP woven bags with an inner PE liner, while liquid grades are available in 1,000 L IBCs or bulk tanks, with customization available.
Q:
What specifications should be checked before ordering?

A: Confirm physical form, total iron, basicity, pH, water-insoluble matter, reducing substances and heavy metals such as arsenic, lead and cadmium. Request the current batch analysis, technical data and safety information before purchase.
Q:
How should PFS be stored and handled?

A: Store solid material in tightly closed bags in a dry, ventilated area away from moisture, alkalis and incompatible materials. PFS solutions are acidic and corrosive, so use corrosion-resistant dosing equipment, chemical-resistant PPE and eye protection, and follow the safety information.

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