Chemical and Filtration Products of Texas
CAS 60-00-4|C₁₀H₁₆N₂O₈

EDTA — Chelating Agent

Ethylenediaminetetraacetic acid — hexadentate chelator for boiler water treatment, scale inhibition, oilfield applications, and personal care stabilization.

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Coordination Sites

6 (hexadentate)

Key Grades

Na₄EDTA, Na₂EDTA

DOT Status

Not regulated

Packaging

Drums / Totes / Bags

Available Grades

GradeCASFormPrimary Use
EDTA Tetrasodium Salt (Na₄EDTA)64-02-838–40% solution or dryBoiler water treatment, scale inhibition, and industrial cleaning.
EDTA Disodium Salt (Na₂EDTA)139-33-3Dry powder 99%Pharmaceutical chelation, personal care, and food preservation.
EDTA Free Acid60-00-4Dry powder 99%Chemical synthesis and laboratory reagent.

Physical Properties

Full NameEthylenediaminetetraacetic acid
CAS (free acid)60-00-4
CAS (Na₄EDTA)64-02-8
Molecular FormulaC₁₀H₁₆N₂O₈ (free acid)
Molecular Weight292.24 g/mol (free acid)
AppearanceWhite powder or colorless solution
Solubility (Na₄EDTA)Freely soluble in water
pH (1% Na₄EDTA soln)10.5–11.5
StabilityStable under normal conditions
Flash PointNon-flammable
Chelation Capacity6 coordination sites per molecule
Stability ConstantsHigh — forms stable complexes with Ca²⁺, Mg²⁺, Fe³⁺
EDTA — Ethylenediaminetetraacetic AcidNCH₂CH₂NHOOCHOOCCOOHCOOHC₁₀H₁₆N₂O₈ | MW 292.24 | CAS 60-00-4

Industrial Applications

Boiler & Cooling Water Treatment

Chelates calcium and magnesium hardness ions to prevent scale formation in boilers, cooling towers, and heat exchangers. Prevents fouling and corrosion.

Industrial Cleaning & Descaling

Removes iron, calcium, and mineral deposits from process equipment, pipelines, and heat exchangers without aggressive acid treatment.

Oilfield Scale Inhibition

Prevents calcium carbonate and barium sulfate scale in production tubing, wellbores, and surface equipment. Used in squeeze treatments.

Personal Care & Cosmetics

Disodium EDTA stabilizes formulations, prevents metal-catalyzed oxidation, and improves preservative efficacy in shampoos, lotions, and creams.

Food & Beverage

EDTA calcium disodium (EDTA-CaNa₂) approved as food additive (E385) to prevent oxidative rancidity and color changes in canned foods.

Pulp & Paper

Chelates transition metals in bleaching sequences to improve bleach efficiency and reduce chemical consumption in kraft pulp processing.

Safety & Regulatory

NFPA Health1 — Slight hazard
NFPA Flammability0 — Minimal hazard
NFPA Reactivity0 — Stable
OSHA PEL (TWA)No established PEL
DOT Hazard ClassNot regulated
BiodegradabilitySlowly biodegradable — check local discharge limits
Aquatic ToxicityLow — but can mobilize heavy metals in sediments

SDS available for each grade upon request.

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Tetrasodium and disodium EDTA in drums, totes, bags, and bulk across Texas and the Gulf Coast.

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