DISODIUM EDTA- ▸ Chelating agent: Sequesters trace metal ions to stabilize formulations.
- ▸ Preservative support: Color-retention and preservative-system component.
- ▸ Pulp and paper: Metal-ion control in pulp and paper processing.
- ▸ Textiles: Sequestrant in textile printing, dyeing, and finishing.
- ▸ Cleaning products: Sequestrant in household and industrial cleaners.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Disodium EDTA (disodium edetate, CAS 139-33-3) is the disodium salt of ethylenediaminetetraacetic acid, used as a chelating and sequestering agent. It binds trace metal ions to stabilize formulations, retain color, and support preservative systems in personal care and industrial products. It is also used in pulp and paper processing and in textile dyeing and finishing.
Disodium EDTA: Where It Fits
Disodium EDTA (EDTA-2Na) is the partially neutralized salt; a ~1% solution sits near pH 4.5–5.5, so it is the chelant of choice when a formula must stay close to skin-neutral or slightly acidic — preservative boosting and color/stability protection in personal care, plus textile dyeing and paper processing. Where a higher-pH bath or maximum solubility is needed, the fully neutralized tetrasodium EDTA is the better fit.
Chelating Agents Compared
Disodium EDTA against the other sequestrants buyers commonly evaluate — matched on operating pH, biodegradability, and target metal:
For maximum-alkalinity duty a readily biodegradable option is sodium gluconate; for the fully neutralized salt see tetrasodium EDTA. Send your target metal and pH on an RFQ for a grade recommendation.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 205-358-3
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Food-Grade Chelating Agents for Metal-Catalyzed Oxidation (EDTA, DTPA, Gluconate) (Food & Beverage)
- Preservative Systems to Pass Challenge Testing (Beauty & Personal Care)
- EDTA & Chelating Agent Ingredient Hub (Home & Industrial Care)
Frequently Asked Questions
What is disodium EDTA used for?
Disodium EDTA (disodium edetate) is a chelating and sequestering agent that binds trace metal ions to stabilize formulations, retain color, and support preservative systems in personal-care and industrial products. It is also used in pulp and paper processing and in textile dyeing and finishing.
What is the difference between EDTA and disodium EDTA?
EDTA is the free acid, ethylenediaminetetraacetic acid; disodium EDTA (CAS 139-33-3, C10H14N2Na2O8) is its disodium salt, which is more water-soluble and near-neutral in solution. Other salts (tetrasodium, calcium-disodium) also exist — confirm the CAS on the CoA.
Is disodium EDTA water soluble?
Yes. Disodium EDTA is appreciably water-soluble, which is why the disodium salt is preferred over the free acid for aqueous chelation. Exact solubility and assay are documented on the CoA supplied with each lot.
What is the CAS number and HS code for disodium EDTA?
CAS 139-33-3, molecular formula C10H14N2Na2O8; it classifies under HS 2922.49 (other amino-acids and their derivatives). Identity is confirmed on the CoA, with a current SDS per shipment.
How is disodium EDTA supplied in bulk?
It is supplied as a crystalline/granular powder in bags, supersacks, or drums to formulators and industrial buyers. Available grades and pricing depend on volume and destination; submit a bulk RFQ for a quote, CoA, and SDS.
What is the REACH and TSCA regulatory status of Disodium EDTA (Disodium Edetate, EDTA-2Na)?
Disodium EDTA (Disodium Edetate, EDTA-2Na) (CAS 139-33-3) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 205-358-3).