Etidronic Acid
HEDP, 1-Hydroxyethylidene-1,1-diphosphonic acid.
- CAS
- 2809-21-4
- EC
- 220-552-8
- Sectors
- Water & Wastewater Treatment, Home Care & Industrial Cleaning
Etidronic Acid, commonly known as HEDP, is a high-performance organophosphonate scale inhibitor. It is typically supplied as a 60% aqueous solution or as a solid powder for specific formulations.
It exhibits excellent sequestration properties for calcium, magnesium, and iron ions, even at high temperatures. It is highly stable under high pH conditions, making it superior to polyphosphates in industrial cooling systems.
This Technical Grade chemical serves as a potent chelating agent that prevents scale formation and corrosion. Its ability to inhibit carbonate and sulfate scales makes it a cornerstone of modern water treatment.
SoleChem, an ISO 9001:2015 certified chemical supplier based in Türkiye, delivers Etidronic Acid (CAS 2809-21-4) to customers in more than 40 countries.
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Etidronic Acid
Applications
- Cooling Water Treatment: Prevents scale buildup in industrial cooling towers and heat exchangers.
- Detergent Formulation: Acts as a stabilizer for peroxide bleaching agents and a builder in heavy-duty cleaners.
- Metal Surface Treatment: Used as a cleaning agent for metals to remove oxides and prevent re-oxidation.
Safety & Risks
Classified as Corrosive to Metals and Serious Eye Damage Category 1. Proper PPE including chemical goggles and rubber gloves is required for safe handling.
Packaging
25 kg drums, 250 kg plastic drums, or 1250 kg IBC containers.