Phosphonates & salts
2-Hydroxyphosphonoacetic acid
CAS 23783-26-8
HPAA, 2-hydroxyphosphonoacetic acid (CAS 23783-26-8), is a liquid organic phosphonate used as a corrosion-control component in industrial and oilfield water-treatment formulations. Its reference TDS specifies at least 50.0% solids. H2Q INC. handles sales, customer service, quotations and contracts. Include your grade, quantity and destination when requesting documents and supply terms.
Liquid · ≥ 50.0% solids
Source: Jiyuan Qingyuan manufacturer TDS — HPAA. Routine manufacturer TDS supplied to H2Q on 28 October 2026. This is the receipt date, not a printed revision number. Confirm the selected grade and relevant batch COA before purchase.
| Parameter | Reference specification |
|---|---|
| Appearance | Dark brown liquid |
| Solids content | ≥ 50.0 % |
| Phosphorous acid as PO₃³⁻ | ≤ 4.0 % |
| pH1% solution | ≤ 3.0 |
| Density20°C | ≥ 1.300 g/cm³ |
| Iron as Fe | ≤ 50.0 ppm |
| Phosphoric acid as PO₄³⁻ | ≤ 2.0 % |
Options and storage information listed in the manufacturer reference.
10 months
Indoors in a shaded, dry place, as stated in the manufacturer reference.
Confirm the current grade, packaging, storage period and supply terms for your order.
Review the complete formulation, water chemistry and metal surfaces before selecting the treatment programme.
Product identity and overview: Qingyuan official HPAA product page . Confirm the current grade-specific documents for your application.
FOR U.S. PROCUREMENT TEAMS
Comparing HPAA supplier options? Start with the exact grade, your application and delivery requirements.
H2Q INC. handles U.S. sales, customer service, quotations and sales contracts. Jiyuan Qingyuan Water Treatment Co., Ltd., China, handles manufacturing, research and development, and export procedures. Tell H2Q your grade and destination so we can review the order requirements.
H2Q’s role and business contact · Manufacturer information and evidence
Specify the supplied form, exact grade, content reporting basis and impurity limits that your purchasing specification requires. State your trial quantity or recurring demand, with units. Minimum order quantity is confirmed individually for the grade, package and destination; there is no single minimum across this catalog.
Review HPAA specifications. The reference tables do not establish current availability or an accepted order quantity.
Give your required delivery date, destination city and state, ZIP code or receiving port, and preferred delivery terms. H2Q confirms lead time, packaging, transport arrangements and delivery terms for each order in the quotation and sales contract. Qingyuan handles export procedures; import responsibilities must be agreed for the destination.
Availability and delivery timing are confirmed for the specific order; this page does not indicate U.S. inventory.
The manufacturer lists these reference packaging options for HPAA:
Review HPAA packaging and storage. Ask for confirmation of the package, labeling and shipping arrangement for your grade and destination.
PLAN YOUR PRODUCT REVIEW
Compare the exact product and grade against your requirements before agreeing supply terms.
Also searched as: HPAA · HPA · 2-Hydroxyphosphonoacetic acid
Identify the metals, water chemistry and corrosion problem. Include the complete formulation and the evaluation method used to assess the selected HPAA grade.
Describe the actual water system and other treatment components. The manufacturer discusses zinc-containing and low-molecular-weight polymer formulations; their suitability depends on the complete treatment system.
State the zinc salt or polymer identity, concentration and compatibility tests planned for the formulation. A familiar ingredient combination is not a finished treatment specification.
Use the TDS for product review, the SDS for handling and regulatory review, and a relevant COA for batch-level checks.
Request HPAA documentsHPAA is an organic phosphonate, identified here as 2-hydroxyphosphonoacetic acid. It may be used with low-molecular-weight polymers in a formulation, but that does not make HPAA itself a polymer or establish interchangeability with a polymer product.
It is a minimum solids-content value. The source does not label it as active acid. Use the current TDS and agreed test method to compare the selected HPAA grade with your purchasing specification.
This entry describes a formulation component. The manufacturer discusses use with zinc salts or low-molecular-weight polymers. Product selection requires the metals, water chemistry, other ingredients and application-test results for your system.
The reference table reports phosphorous acid, phosphoric acid and iron. Identify which limits and methods your team requires, together with solids, pH and density. Request a current grade-specific TDS and specify the parameters expected on the shipment COA.
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