Sequestration — Process Challenge

Food-Grade Chelating Agents for Metal-Catalyzed Oxidation (EDTA, DTPA, Gluconate)

Trace iron and copper catalyze lipid and ascorbate oxidation, driving rancidity, color loss and metallic notes; need chelants to lock up the metal
Why It Matters
Trace iron and copper catalyze lipid and ascorbate oxidation, driving rancidity, color loss and metallic notes; need chelants to lock up the metal
Solution Approach

Trace iron and copper catalyze lipid and ascorbate oxidation, driving rancidity, color loss and metallic notes; need chelants to lock up the metal RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Formulation Workflow
1
Process & Compliance Review
Map the application and contact points, and confirm food-grade and regulatory status (FCC/USP, Kosher/Halal, allergen) for every input.
2
Ingredient & Grade Selection
Select the right grade of acidulant, preservative, emulsifier, stabilizer, or processing aid for the formulation, label, and sensory targets.
3
Bench Trial & Dosing
Validate use level and performance in a bench or pilot batch, and specify packaging and lot traceability suited to food-safety requirements.
4
Quality & Shelf-Life Validation
Verify finished-product quality, microbial stability, and shelf life, and lock the spec with a CoA and document control for audits.
Recommended Chemistries (4)
Disodium EDTA (Food Grade)
CAS 139-33-3
Specialty Additives
Chelation / Sequestration
Chelates trace iron and copper that catalyze oxidation, protecting color, flavor and ascorbate in dressings, mayo and canned goods
Physical Description: White odorless solid; White odorless crystals   Appearance: White crystalline powder   Melting Point: MP: 242 °C /EDTA disodium dihydrate/
Full Details
Tetrasodium EDTA (EDTA Na4)
CAS 64-02-8
Amines & Amides
Chelation / Sequestration
Tetrasodium EDTA gives stronger metal sequestration at higher pH
Melting Point: 300 °C (decomposes)   Density: 6.9 lb/gal /Apparent density/   Solubility: Slightly soluble in ethanol
Full Details
DTPA (Diethylenetriaminepentaacetic Acid)
CAS 67-43-6
Amines & Amides
Chelation / Sequestration
Higher-denticity chelant holds iron tightly across a wide pH range for oxidation control
Physical Description: White to off-white solid   Boiling Point: Decomposes   Melting Point: 219-220 ºC
Full Details
Sodium Gluconate (Food Grade)
CAS 527-07-1
Esters
Chelation / Sequestration
Alkali-stable sequestrant for calcium and iron that also prevents scale in CIP cleaning
Melting Point: 170-175 °C   Boiling Point: No boiling point at normal pressure; decomposes…   Density: 1.8 g/cm3
Full Details

Need help selecting the right chemistry?

Our team can help with grade selection, dosage guidance, and multi-origin sourcing.

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