Quick Search
HPMA 50% Hydrolyzed Polymaleic Anhydride is very stable in presence of chlorine and other oxidizing biocides.
HPMA 50% Hydrolyzed Polymaleic Anhydride has good scale inhibition and high temperature resistance properties.
HPMA 50% Hydrolyzed Polymaleic Anhydride can be used in the water desalination plants.
CAS Number: 26099-09-2
Molecular Formula: C4H4O4
Molecular Weight: 116.07
EINECS Number: 607-861-7
Synonyms: Hydrolized polymaleic anhydride;2-Butenedioicacid(Z)-,homopolymer;Hydroxypropylmethacrylamide;HoMopolyMer of Maleic Acid(HPMA);(z)-2-butenedioic acid homopolymer;poly(maleicacid)(50%aq);MALEIC ACID POLYMER;PolymaleicacidAq
HPMA 50% Hydrolyzed Polymaleic Anhydride is shown by the study of the structure-effect relationship of molecular microstructure.
The increase in the degree of hydrolysis is advantageous for HPMA 50% Hydrolyzed Polymaleic Anhydride chemical improvement in scale inhibition performance.
Therefore, a large degree of hydrolysis is ensured as much as possible during the synthesis of hydrolyzed polymaleic anhydride.
HPMA 50% Hydrolyzed Polymaleic Anhydride is also an excellent calcium carbonate antiscalant upon high temperature and in the high alkaline cooling water systems.
In addition, it can be used in combination with zinc salts as a corrosion inhibitor.
HPMA 50% Hydrolyzed Polymaleic Anhydride can also be used as concrete additive and for crude oil evaporation.
HPMA 50% Hydrolyzed Polymaleic Anhydride can be manufactured through the polymerization of maleic anhydride I an aromatic hydrocarbon upon 60° to 200° C.
HPMA 50% Hydrolyzed Polymaleic Anhydride is a phosphorus-free water treatment chemical.
HPMA 50% Hydrolyzed Polymaleic Anhydride forms a chelate with calcium and magnesium ions in water.
And hydrolysed polymaleic anhydride can cause lattice distortion.
After the anion is adsorbed by the calcium carbonate nucleus, the nucleus can be charged.
HPMA 50% Hydrolyzed Polymaleic Anhydride is a water-soluble low-molecular-weight polymer used primarily as a scale inhibitor, dispersant, and antiscalant in water treatment systems and industrial cooling processes.
HPMA 50% Hydrolyzed Polymaleic Anhydride is commonly supplied as an aqueous solution (about 50% active content).
This makes it an important industrial water-treatment chemical.
Chemically, HPMA is a hydrolyzed form of polymaleic anhydride, consisting of repeating maleic acid units in a polymer chain with carboxylic acid groups that provide strong chelation and dispersion ability.
These carboxylate groups interact with metal ions such as calcium and magnesium.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in coordination and polymer chemistry.
Its key function is inhibiting scale formation by binding to hardness ions (Ca²⁺, Mg²⁺) and preventing them from crystallizing into insoluble salts like calcium carbonate or calcium sulfate.
HPMA 50% Hydrolyzed Polymaleic Anhydride keeps water systems clean and prevents fouling of pipes and heat exchangers.
This makes it essential in industrial water management.
HPMA 50% Hydrolyzed Polymaleic Anhydride is best described as a polymeric antiscalant and dispersant used to control mineral deposition and improve efficiency in cooling water systems, boilers, and reverse osmosis pretreatment systems.
Its main role is chemical stabilization of dissolved minerals.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it widely used in water treatment technology.
HPMA 50% Hydrolyzed Polymaleic Anhydride also plays a role in controlling crystal nucleation kinetics, meaning it delays the initial formation of solid scale nuclei rather than only modifying already-formed crystals.
HPMA 50% Hydrolyzed Polymaleic Anhydride early-stage inhibition is what makes it effective at very low dosage levels.
This makes it important in nucleation kinetics control.
HPMA 50% Hydrolyzed Polymaleic Anhydrides adsorption on mineral surfaces depends strongly on pH, because at higher pH more carboxylic acid groups are deprotonated into carboxylate ions, increasing binding strength to calcium-rich surfaces.
This improves dispersion and antiscaling efficiency in alkaline water systems.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in pH-dependent coordination chemistry.
HPMA 50% Hydrolyzed Polymaleic Anhydride also contributes to surface charge modification of suspended particles, increasing their zeta potential and improving electrostatic stability in aqueous systems.
This prevents aggregation and sedimentation of fine solids.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in electrokinetic stabilization.
In real industrial systems, HPMA 50% Hydrolyzed Polymaleic Anhydride often acts synergistically with other additives by enhancing phosphonate or acrylic polymer performance through co-adsorption and mixed surface layers on scale-forming nuclei.
This combined action improves broad-spectrum scale control.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in synergistic formulation design.
Density: 1.18 (48% aq.)
Flash point: 95 °C
Storage temperature: 2–8°C
Solubility: Sparingly soluble in methanol; soluble in water
Form: Pale yellow to yellow solution
Odor: Slight
InChI: InChI=1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-
InChIKey: VZCYOOQTPOCHFL-UPHRSURJSA-N
SMILES: C(/C(=O)O)=C/C(=O)O
HPMA 50% Hydrolyzed Polymaleic Anhydride works mainly through a threshold inhibition mechanism, meaning it prevents scale formation even at very low concentrations by interfering with crystal nucleation and growth rather than fully removing ions from solution.
This is more efficient than simple precipitation control.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in advanced antiscalant systems.
HPMA 50% Hydrolyzed Polymaleic Anhydride also provides dispersion of suspended solids such as iron oxides, clay particles, and other inorganic debris, preventing them from settling or forming deposits on surfaces.
This helps maintain clean heat exchange and flow systems.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in fouling control.
Because of its carboxyl-rich structure, HPMA 50% Hydrolyzed Polymaleic Anhydride can adsorb onto growing crystal surfaces and distort their lattice formation, resulting in non-adherent or easily removable deposits.
This reduces hard scale buildup in equipment.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in surface crystal engineering.
HPMA 50% Hydrolyzed Polymaleic Anhydride is highly effective in alkaline and high-hardness water conditions, where calcium carbonate scaling is most problematic in industrial systems.
This makes it widely used in cooling towers and boilers.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in industrial water stability.
HPMA 50% Hydrolyzed Polymaleic Anhydride is also often used in combination with other additives like phosphonates, acrylic acid polymers, or copolymer dispersants to achieve broader scale and corrosion control performance.
This synergy improves overall system efficiency.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in multi-component water treatment formulations.
HPMA 50% Hydrolyzed Polymaleic Anhydride is also valued because it maintains performance under high ionic strength conditions, such as seawater or brine systems, where many conventional dispersants lose efficiency due to charge screening effects.
This expands its use in harsh water chemistries.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in saline water treatment.
HPMA 50% Hydrolyzed Polymaleic Anhydride chains are highly flexible and randomly coiled in solution, allowing them to access and cover irregular crystal surfaces efficiently without steric rigidity limitations.
This improves surface coverage and inhibition efficiency.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in polymer conformational behavior.
HPMA 50% Hydrolyzed Polymaleic Anhydride also shows a strong affinity for metal ion surfaces, especially calcium carbonate nuclei, where it adsorbs early and interferes with crystal lattice growth at the nucleation stage.
This early-stage interference is one of the reasons it is effective at very low dosages.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in nucleation control chemistry.
HPMA 50% Hydrolyzed Polymaleic Anhydrides performance is strongly influenced by molecular weight (typically low, often in the range of a few thousand g/mol), because shorter chains diffuse faster and cover crystal surfaces more efficiently.
However, if the molecular weight is too low, long-term stability and dispersion performance can decrease.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in polymer performance tuning.
HPMA 50% Hydrolyzed Polymaleic Anhydride also works through electrostatic repulsion and steric hindrance combined, where carboxylate groups provide charge stabilization while the polymer backbone creates physical spacing between particles.
This dual mechanism improves dispersion stability in complex water systems.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in colloid stabilization science.
In high-temperature water systems, HPMA 50% Hydrolyzed Polymaleic Anhydride remains effective because it has good thermal stability and does not readily hydrolyze further under typical boiler or cooling system conditions.
This allows long-term performance in harsh industrial environments.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in thermal water chemistry.
HPMA 50% Hydrolyzed Polymaleic Anhydride is often used as part of a “threshold inhibitor” system, meaning it prevents scale formation even when present at concentrations far below stoichiometric levels required to bind all hardness ions.
This makes it highly cost-efficient compared to precipitation-based treatments.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in industrial efficiency optimization.
HPMA 50% Hydrolyzed Polymaleic Anhydride can also modify crystal morphology of calcium carbonate, shifting it from dense, adherent calcite structures to more amorphous or aragonite-like forms that are easier to suspend and remove.
This reduces hard scale buildup on equipment surfaces.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in crystal engineering.
Uses Of HPMA 50% Hydrolyzed Polymaleic Anhydride:
HPMA 50% Hydrolyzed Polymaleic Anhydride is widely used in industrial cooling water systems to prevent scale buildup in heat exchangers, condensers, and circulating water loops.
It helps maintain heat transfer efficiency and reduces energy loss.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it essential in cooling system management.
HPMA 50% Hydrolyzed Polymaleic Anhydride is used in boiler water treatment systems where it prevents deposition of calcium and magnesium salts on boiler surfaces.
This improves safety and energy efficiency in steam generation.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in boiler chemistry.
In reverse osmosis (RO) and membrane systems, it acts as a pretreatment antiscalant to prevent fouling and extend membrane lifetime.
This reduces maintenance and replacement costs.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in membrane technology.
HPMA 50% Hydrolyzed Polymaleic Anhydride is used in oilfield water injection systems to control scaling and maintain permeability in reservoirs and pipelines.
This ensures stable production operations.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in petroleum engineering.
In industrial cleaning and process water systems, it helps disperse suspended solids and prevent deposition on equipment surfaces.
HPMA 50% Hydrolyzed Polymaleic Anhydride improves operational efficiency and reduces downtime.
This makes it important in industrial process maintenance.
HPMA 50% Hydrolyzed Polymaleic Anhydride is widely used in cooling tower water systems to prevent scale deposition on heat exchanger surfaces, improving heat transfer efficiency and reducing energy consumption.
HPMA 50% Hydrolyzed Polymaleic Anhydride is critical in large industrial cooling operations.
This makes it essential in thermal system maintenance.
HPMA 50% Hydrolyzed Polymaleic Anhydride is used in industrial boiler systems to reduce scaling on metal surfaces exposed to high-temperature water and steam, improving safety and operational efficiency.
This helps prevent overheating and equipment failure.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in boiler protection systems.
In desalination and reverse osmosis (RO) plants, it is used as a pretreatment antiscalant to protect membranes from fouling and extend operational lifespan.
This reduces maintenance frequency and operational cost.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in membrane protection technology.
HPMA 50% Hydrolyzed Polymaleic Anhydride is used in oilfield injection water systems to maintain permeability in reservoirs by preventing deposition of calcium carbonate and sulfate scales in pipelines and formation pores.
HPMA 50% Hydrolyzed Polymaleic Anhydride supports stable oil and gas production.
This makes it important in petroleum production chemistry.
In industrial process water systems (paper, textiles, chemical manufacturing), it helps maintain clean pipelines and equipment by dispersing inorganic particles and preventing deposition.
This improves process reliability and reduces downtime.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in industrial water management.
HPMA 50% Hydrolyzed Polymaleic Anhydride is widely used in industrial cooling towers where it prevents calcium carbonate and calcium sulfate scaling on heat exchanger surfaces, improving thermal efficiency and reducing energy consumption.
This is critical for large-scale HVAC and power systems.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it essential in thermal system optimization.
HPMA 50% Hydrolyzed Polymaleic Anhydride is used in high-pressure boiler systems to protect internal metal surfaces from scale formation, reducing risk of overheating and improving steam generation efficiency.
This increases operational safety and equipment lifespan.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in boiler protection chemistry.
In reverse osmosis and membrane desalination systems, it acts as a pretreatment antiscalant to prevent membrane fouling and maintain permeate flow rates over long operating cycles.
This reduces cleaning frequency and membrane replacement costs.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in membrane desalination technology.
HPMA 50% Hydrolyzed Polymaleic Anhydride is used in oilfield injection water treatment, where it prevents scale deposition in pipelines and reservoir formations, maintaining permeability and stable fluid flow.
This supports efficient hydrocarbon recovery operations.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in petroleum production systems.
In industrial process water systems (such as paper mills, textile processing, and chemical manufacturing), it prevents deposition of inorganic salts and maintains stable suspension of fine solids.
HPMA 50% Hydrolyzed Polymaleic Anhydride improves operational consistency and reduces downtime.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it important in industrial process stability.
Safety Profile Of HPMA 50% Hydrolyzed Polymaleic Anhydride:
HPMA 50% Hydrolyzed Polymaleic Anhydride is generally considered a low-to-moderate hazard industrial chemical with relatively low toxicity under normal handling conditions.
It is widely used in water treatment with established safety practices.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes it manageable in industrial environments.
HPMA 50% Hydrolyzed Polymaleic Anhydride may cause mild skin and eye irritation due to its acidic carboxylate functionality, especially in concentrated liquid form.
Direct contact should be avoided and protective equipment is recommended.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes personal protection important.
HPMA 50% Hydrolyzed Polymaleic Anhydride is not considered highly volatile or flammable under normal conditions, making it safer to handle compared to many organic industrial chemicals.
However, standard chemical handling precautions still apply.
This makes it relatively stable.
Inhalation risk is generally low because it is typically used as an aqueous solution, but aerosols or mists may cause respiratory irritation in poorly ventilated environments.
Proper ventilation reduces exposure risk.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes engineering controls important.
From an environmental perspective, HPMA 50% Hydrolyzed Polymaleic Anhydride is not highly bioaccumulative but should still be managed carefully in wastewater systems to avoid altering aquatic ion balance and contributing to nutrient loading.
Responsible discharge control is required.
HPMA 50% Hydrolyzed Polymaleic Anhydride makes environmental management important.
