Disodium hydroxyethyliminodiacetate

Disodium hydroxyethyliminodiacetate (CAS 135-37-5) is a biodegradable aminopolycarboxylate chelating agent used to sequester calcium, magnesium, and heavy metal ions in aqueous systems.

Where is Disodium hydroxyethyliminodiacetate used?

• Personal care: prevents metal ion interference that degrades fragrance stability and reduces preservative efficacy in shampoos, liquid soaps, and skin cleansers
• Water treatment: controls scale formation and metal deposition in cooling towers and process water circuits
• Industrial and institutional cleaning: softens hard water and keeps soils suspended in the wash liquor
• Phosphate-free or EDTA-free cleaning products: meets green chemistry specifications without sacrificing chelation performance or product stability
• It offers an environmentally acceptable alternative to EDTA salts where biodegradability is a sourcing or regulatory requirement.

Good to know: Technical grade is the standard commercial form; personal care grade is available for cosmetic formulations requiring lower impurity profiles.

Commercial specifications

• Aqueous solution, typically 30–40% active content
• Packaging: drums to IBC totes