Cooling-water treatment
HEDP is used in scale and corrosion-control programs. Describe the deposits or corrosion issue, water hardness, alkalinity, operating pH and temperature, together with the current treatment chemistry.
Phosphonates & salts
HEDP for water treatment
1-Hydroxyethylidene-1,1-diphosphonic acid
For buyers evaluating an HEDP supplier, H2Q coordinates product information, technical-document requests and supply discussions connected to Qing Shui Yuan manufacturing. Start with the chemical identity, required form and application so the review addresses the material your team needs.
Product at a glance
- Chemical name
- 1-Hydroxyethylidene-1,1-diphosphonic acid
- Family
- Phosphonates & salts
- CAS number
- 2809-21-4
- Product form
- Liquid / crystal powder
- Chemical family
- Organophosphonic acid
- Main functions
- Scale inhibition and chelation
- Product forms
- Liquid and crystal powder listed
What to consider
- Scale and corrosion control
- Metal-ion chelation
- Cleaning and water-treatment uses
For your technical review
Share impurity limits and the intended application so the appropriate grade can be reviewed.
Product identity and overview: Qingyuan official HEDP product page . Confirm the current grade-specific documents for your application.
PLAN YOUR PRODUCT REVIEW
Buying HEDP.
The details that matter.
Compare the exact product and grade against your requirements before agreeing supply terms.
Also searched as: HEDP · Etidronic acid · EHDP
Specification and supply checklist
- Chemical identity and product form
- Confirm HEDP acid or the exact sodium salt and grade. State whether your specification calls for a liquid or solid, and provide the full chemical name or CAS number used in your purchasing documents.
- Concentration and acceptance limits
- Provide the required active content and its reporting basis, impurity limits and relevant test methods. For pH, specify the test-solution concentration; for liquid density, include the measurement temperature.
- Documents and qualification
- Identify the TDS and destination-specific SDS your team needs, the parameters expected on a COA, and any sample tests required before approval. A shipment COA must correspond to the supplied grade and batch.
- Quantity, packaging and destination
- State the trial or recurring quantity, preferred package, destination country or port and target delivery date. These details support a quotation review; packaging, availability and timing are confirmed for the request.
Start with your application
Cleaning and formulation ingredients
For a chelating ingredient in a cleaning formulation, identify the required acid or salt form, target concentration and other ingredients. Include your compatibility tests and acceptance criteria when requesting a sample discussion.
Process-water applications
For low-pressure boiler, oilfield-water or membrane-treatment inquiries, identify the system and feedwater conditions. Share the equipment materials and qualification requirements so the review can address that process.
Request the documents for your grade
Use the TDS for product review, the SDS for handling and regulatory review, and a relevant COA for batch-level checks.
Request HEDP documentsHEDP buying questions
Is HEDP acid the same as a sodium salt of HEDP?
No. This page identifies HEDP acid, CAS 2809-21-4. A sodium salt has a different chemical identity and neutralization level. If your formulation specifies a salt, provide its exact name and grade so the request can be reviewed without assuming interchangeability or availability.
Which form and concentration should I request?
The manufacturer catalog lists liquid and crystal-powder forms. Specify the form and active-content requirement used by your formulation or purchasing standard, including how the content is expressed. The suitable grade and its current specification need to be confirmed for your inquiry.
Which documents are useful when qualifying HEDP?
Request the grade-specific TDS for technical parameters and the relevant SDS for handling and destination requirements. Specify the tests you expect on the COA. A COA for a particular batch provides batch results; it does not replace application testing or establish the specification of every grade.
What should I include in an HEDP quotation request?
Include the chemical form, required specification, application, quantity, packaging preference, destination and target timing. Tell us whether you need documents, an evaluation-sample discussion or a commercial quotation so the response can address the next step in your purchasing process.
CONTINUE EXPLORING
Related chemistry.
Phosphonates & salts
ATMP
Amino tri(methylene phosphonic acid)
Cooling waterGet documents
Phosphonates & salts
PBTC
2-Phosphonobutane-1,2,4-tricarboxylic acid
Cooling waterGet documents
Phosphonates & salts
DTPMP·Na₂
Disodium salt of diethylenetriamine penta(methylene phosphonic acid)
Oilfield waterGet documents