Typical specifications
- CAS 2809-21-4; EINECS 220-552-8
- Active HEDP 58.0-62.0% stated
- Appearance: clear colorless to pale yellow liquid
- Phosphorous acid max 2.0%; phosphoric acid max 0.8%
- Chloride max 0.02%; pH 1% solution max 2.0
Candidate for RFQ after document and DG checksBack to sourcing hubWater Treatment
HEDP 60% Liquid, CAS 2809-21-4, Etidronic Acid
Industrial HEDP liquid candidate for overseas buyers seeking CAS 2809-21-4 at 58-62% active content. Verify assay, acid impurities, chloride, pH, packing, COA, SDS, DG status, and export documents before RFQ or shipment.
Quick buying facts
Identify the grade, package, and import market before comparing suppliers.
Use this page to check the product identity, common specification points, document scope, package notes, and destination-market questions before sending a China sourcing request.
CAS 2809-21-4; EINECS 220-552-8Organophosphonate water treatment chemicalCandidate for RFQ after document and DG checks
Target buyers
- Water treatment formulators
- Cooling water chemical suppliers
- Industrial cleaning product blenders
- Chemical distributors and importers
- OEM service companies for utilities
Documents to check
- CAS number, grade, assay, and impurity profile
- SDS, COA, TDS, HS code, and transport classification
- Destination-market import documents before supplier matching
Packing notes
- Quoted packing: 250 kg drum or 1250 kg IBC
- Confirm drum/IBC material and palletization
- Request net/gross weight and container load plan
- Ask for export marks and batch traceability
Applications and sourcing options
Check whether this product fits the buyer's actual application.
Clear application, grade, package, and document notes help separate real sourcing demand from a vague price check.
Common applications
- Scale and corrosion inhibitor formulations
- Industrial circulating water programs
- Chelant component in cleaning blends
- Boiler or cooling system chemical portfolios
Sourcing options
- Compare 50%, 60%, and 90% concentration offers
- Request FOB, CIF, and EXW quotations
- Ask for factory audit or supplier qualification files
- Check alternate approved producers for continuity
Compliance notes
- Request current COA matching batch and specification
- Obtain SDS, TDS, and HS code confirmation
- Check DG classification for sea/air route
- Verify label language and destination import needs
- No regulatory approval guarantee from listing alone
Buyer search paths
Related sourcing terms
These terms support long-tail discovery while keeping the page focused on useful product and China export buying context.
HEDP 60%Etidronic acidCAS 2809-21-4Hydroxyethylidene diphosphonic acidOrganophosphonate inhibitorWater treatment chemical
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Build a broader quote package from adjacent options.
Buyers often compare neighboring grades, forms, or route options before sending one consolidated RFQ.
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Reverse Osmosis Boiler Water Treatment System, 0.25–200 T/H, CE/ISO Referenced
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RFQ questions before supplier matching
Turn this product into a quote request.
Share target market, quantity, packaging scope, artwork status, delivery destination, and required documents so CHN Chemicals can prepare a cleaner supplier comparison.
- Is the offered grade exactly HEDP 60% liquid?
- Can you provide pre-shipment COA and third-party test?
- What are current impurity limits by batch?
- Is shipment classified as dangerous goods?
- What is MOQ, lead time, and sample policy?
- Request current COA matching batch and specification
- Obtain SDS, TDS, and HS code confirmation
- Check DG classification for sea/air route
- Verify label language and destination import needs
- No regulatory approval guarantee from listing alone
Send the product page with your target quantity and market. A sourcing manager can then confirm sample options, supplier fit, packaging details, and open document gaps.