INCI Name
Disodium EDTA
Functions
2 Roles
Sustainability
4/10
Category
chelating agents
What It Does
Disodium EDTA is a synthetic chelating agent that binds metal ions like iron, copper, and calcium that can catalyze oxidation and destabilize formulations. It's the disodium salt of ethylenediaminetetraacetic acid, making it more water-soluble than the free acid form. Formulators choose it because it enhances the effectiveness of preservatives and antioxidants by sequestering trace metals that would otherwise promote rancidity and microbial growth.
Technical Properties
pH Range
4.0-6.0
Optimal working range
Ionic Charge
anionic
Molecular charge type
Viscosity Effect
neutral
Impact on formula thickness
Foaming Ability
none
Lather generation
Ingredient Compatibility
Known Interactions
EDTA binds copper more strongly than the tripeptide does, so it strips copper from the complex and deactivates GHK-Cu. The damage is worst when EDTA approaches or exceeds the peptide in molar terms, which happens at LOW peptide doses. Remove the EDTA or replace it with a non-competing approach (trace-metal-controlled water, opaque airless packaging, and an antioxidant that does not reduce Cu2+).
EDTA chelates free iron strongly. Intentional in some applications (prevents oxidation catalysis) but can reduce iron bioavailability in supplements/beverages. Verify this is the intended behavior.
Sustainability Profile
Sustainability Score
Biodegradability
not readily biodegradable
Source
synthetic
Feedstock
petroleum-derived precursors
Related Ingredients
Similar chelating agents to explore
Quick Reference
- Full INCI Name
- Disodium EDTA
- Common Name
- Disodium EDTA
- CAS Number
- 139-33-3---6381-92-6
- Category
- chelating agents