HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution)
Colourless to pale yellow clear aqueous liquid · CAS 2809-21-4
Overview
HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution) (CAS 2809-21-4) is one of the specialty chemicals products Suraj Chemicals supplies to industrial, institutional and manufacturing buyers across India from our Chennai base. It is commonly used for scale and corrosion inhibitor in cooling-water and boiler-water treatment; chelating/sequestering agent for industrial and metal cleaning; stabiliser and metal-ion chelant in textile bleaching and dyeing, among other applications in the specialty chemicals category. We pack HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution) in 25/50 kg carboys / drums, and can arrange bulk, drum or tanker quantities for larger requirements — full characteristics, applications and downloadable documentation are below, or you can request a quote directly.
Specification Sheet — Characteristics
Download Specification Sheet (PDF)| Characteristics | Specifications |
|---|---|
| Active Content (HEDP) | 58% – 60% |
| pH (1% Solution) | 2.0 – 2.5 |
| Specific Gravity (20°C) | 1.28 – 1.33 |
| Iron (as Fe) | 20 ppm Max |
| Colour (APHA) | 50 Max |
Values above are well-established typical/standard specification properties for this product, compiled from published technical references — not a batch-specific lab report. Figures can vary batch to batch — request a current certificate of analysis with your order.
Applications
- Scale and corrosion inhibitor in cooling-water and boiler-water treatment
- Chelating/sequestering agent for industrial and metal cleaning
- Stabiliser and metal-ion chelant in textile bleaching and dyeing
- Scale inhibitor in oilfield water-injection systems
Frequently Asked Questions
What is HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution)?
HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution) is supplied by Suraj Chemicals as colourless to pale yellow clear aqueous liquid, identified by CAS number 2809-21-4. It falls under our Specialty Chemicals range — see the Specification Sheet table above for its full characteristics.
What is HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution) used for?
Typical applications include: Scale and corrosion inhibitor in cooling-water and boiler-water treatment; Chelating/sequestering agent for industrial and metal cleaning; Stabiliser and metal-ion chelant in textile bleaching and dyeing; Scale inhibitor in oilfield water-injection systems.
How should HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution) be stored and handled?
Store in a cool place in acid-resistant (non-metallic or lined) containers -- a mildly acidic/corrosive aqueous solution that can attack mild steel over time. Avoid contact with eyes and skin; non-flammable, low fire hazard.
What packaging and pack sizes does Suraj Chemicals supply HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution) in?
25/50 kg carboys / drums. Contact us if you need a different pack size, or a bulk/tanker quantity.
What is the shelf life of HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution)?
Typically 24 months from date of manufacture in tightly sealed original containers, stored in a cool, well-ventilated place away from heat, sparks and direct sunlight — consistent with standard practice for this class of chemical. As with any industrial chemical, request the current batch's manufacturing date and a fresh certificate of analysis for orders where exact remaining shelf life matters.
Is HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution) hazardous to handle?
Yes — HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution) is strongly acidic (pH 2.0 – 2.5) and can burn or irritate skin and eyes on direct contact; corrosive to skin, eyes and common metals; flammable and should be kept away from heat, sparks and open flame. Follow the storage and handling guidance above, use appropriate PPE, and download the Safety Data Sheet (SDS/MSDS) in the sidebar above for full GHS hazard, handling and PPE details.
Is a Specification Sheet, TDS or MSDS available for HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution)?
Yes — a downloadable Specification Sheet (PDF) with full characteristics and specifications is available above, and a downloadable Safety Data Sheet (SDS/MSDS) for HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution) is also available above.
Can I get a sample or discuss order quantity for HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution)?
Yes — use the Request Price & Availability button or WhatsApp us with your required quantity, and our team will confirm pricing, minimum order quantity, sample availability and delivery timelines for HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid, 60% Solution).