Polymers & dispersants
Hydrolyzed polymaleic anhydride
CAS 26099-09-2
HPMA, hydrolyzed polymaleic anhydride (CAS 26099-09-2), is a liquid maleic-acid polymer used for carbonate and phosphate scale control in cooling water, boilers and thermal desalination. Review its solids and test-condition references, and confirm chemical identity against a current SDS. H2Q INC. handles U.S. sales, customer service, quotations and contracts. Include your grade and application requirements in a technical or supply inquiry.
Liquid · ≥ 50.0% solids
Source: Jiyuan Qingyuan manufacturer TDS — HPMA. Routine manufacturer TDS resent to H2Q on 30 October 2026, identifying CAS 26099-09-2. The receipt date is not a printed revision number. Earlier specification limits are retained separately below.
Review each form or grade with its source. Earlier catalogue references are labeled separately.
Manufacturer TDS resent and designated by H2Q business contact on 30 October 2026.
| Parameter | Reference specification |
|---|---|
| Appearance | Brown liquid |
| Solids content | ≥ 50.0 % |
| Bromine value | ≤ 80 mg/g |
| pH1% solution | 2.0–3.0 |
| Density20°C | 1.22–1.25 g/cm³ |
| Kinematic viscosityTest temperature and method not stated in the supplied TDS | ≥ 6.0 mm²/s |
Earlier manufacturer sheet retained for reference only. Its bromine and viscosity limits do not describe the current routine grade. Confirm any alternative requirement separately.
| Parameter | Reference specification |
|---|---|
| Appearance | Brown liquid |
| Solids content | ≥ 50.0 % |
| Bromine value | ≤ 50 mg/g |
| pH1% solution | 2.0–3.0 |
| Density20°C | 1.22–1.25 g/cm³ |
| Kinematic viscosityTest temperature not stated in reference TDS | ≥ 8.0 mm²/s |
Options and storage information listed in the manufacturer reference.
12 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.
Request the grade-specific SDS for chemical identification and the TDS for the intended operating conditions.
Product identity and overview: Qingyuan official HPMA product page . Confirm the current grade-specific documents for your application.
FOR U.S. PROCUREMENT TEAMS
Comparing HPMA 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
The current manufacturer TDS identifies HPMA as CAS 26099-09-2. Confirm the grade-specific SDS, solids content and test conditions your treatment must meet. 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 HPMA 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 HPMA:
Review HPMA 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: HPMA · Hydrolyzed polymaleic anhydride · Polymaleic acid
Identify the carbonate or phosphate deposit problem and your operating conditions. Include other ingredients, particularly phosphonates, when planning a formulation evaluation.
Describe the boiler or thermal-desalination process, feedwater and temperature conditions. The thermal application in the source does not by itself establish reverse-osmosis membrane compatibility.
Provide the identity of each treatment ingredient and your compatibility tests. Confirm the chosen HPMA grade and methods before comparing it with another polymer.
Use the TDS for product review, the SDS for handling and regulatory review, and a relevant COA for batch-level checks.
Request HPMA documentsThe manufacturer TDS resent on 30 October 2026 identifies HPMA as CAS 26099-09-2, superseding the inconsistent identifier in an earlier sheet. Confirm the selected grade and applicable SDS for supplier qualification and purchasing.
Only after confirming comparable methods and conditions. The reference lists at least 6.0 mm²/s but omits the viscosity test temperature. It separately specifies density at 20°C; that temperature must not be assumed to apply to viscosity.
The source application used on this page is thermal desalination. It does not establish reverse-osmosis membrane compatibility. For a membrane application, identify the membrane and process and obtain the relevant technical review before selecting a product.
The reference pH of 2.0–3.0 is for a 1% solution. Density of 1.22–1.25 g/cm³ is specified at 20°C. Preserve those conditions when comparing results, and confirm the current test methods for the proposed grade.
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