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At a glance

Chelating agents

Hard-water and metal-ion control

Ionic type
Anionic (chelant)
Typical HLB
N/A
Foam
None
Key industries
I&I, Metal, Textile

Biodegradability: Chelants are selected for metal-ion control; some aminocarboxylates have restricted environmental profiles — use the water-treatment guide.

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Chelating Agents

Chelating agents technical guide

H-Quest HEDTA, TSS, C 100, and L 50 are the published grades. pH windows, Fe3+ vs Ca/Mg, and why this is not the water-treatment dosage article are covered in the chelating agent selection guide.

Related CAS Numbers

H-Quest HEDTA CAS Sodium Heptonate CAS Ethylenediaminetetraacetic Acid CAS CAS 150-38-9 Disodium Edetate CAS Tetrasodium Edetate CAS TSS CAS 144-34-3 CAS 112-57-2
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Learn the chemistry

Technical guides for this product family

Primers matched to this chemistry family. Start here, then open a TDS.

Primer

What Are Chelating Agents?

Metal binding, hard water, and bleach stability explained.

Read guide Guide

HEDTA vs Glucoheptonate

Grade selection for iron control and alkaline cleaners.

Read guide Guide

Chelating vs Metal Complexing

When chelation and complexing briefs diverge.

Read guide How-to

Chelating Agents in Water Treatment

Dosing logic for water-treatment programmes.

Read guide Primer

What Are Scale Inhibitors?

How threshold scale control relates to chelation.

Read guide

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FAQ

Frequently Asked Questions - Chelating Agents

Find answers to common questions about chelating agents

Chelating agents are specialty chemicals that bind to metal ions (such as Ca+2, Mg+2, Fe+2, Fe+3) to form stable complexes. They are used in water treatment, paper manufacturing, textile processing, and cleaning formulations to control metal ions and prevent scale formation.
We offer H-Quest™ HEDTA (Hydroxyethyl Ethylene Diamine Triacetate) for Fe+3 control at low pH, H-Quest™ TSS (Trisodium Sulfosuccinate) for polyvalent ion chelation, and H-Quest™ C 100 and L 50 (Sodium Glucoheptonate) for superior binding performance in pH range 9-14.
Chelating agents are used for scale removal and prevention, water treatment, polymerization, cleaning product formulations, pulp processing, and controlling metal ions in various industrial processes.
Chelating agents improve efficiency by preventing scale formation, controlling metal ion interference, improving cleaning effectiveness, stabilizing formulations, and protecting equipment from metal-catalyzed degradation. They help maintain process quality and extend equipment life.
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Talk to Esteem Industries about HEDTA, glucoheptonate, and related chelant grades for hard-water, iron control, and cleaning programmes.

Request a sample Browse technical blog TDS / SDS / COA