SCMET® HPMA is non-toxic, water-soluble, and boasts excellent chemical/thermal stability (decomposition temp. >330℃) with alkali resistance. It’s widely used in oilfield/refinery circulating water systems, low-pressure boilers, and seawater desalination flash units, offering outstanding antiscaling, high-temperature resistance, and moderate corrosion inhibition—enhanced when compounded with zinc salts.
Polymaleic anhydride (HPMA) is a low-molecular-weight anionic polymer, typically with a molecular weight range of 400–800, synthesized through the polymerization of maleic anhydride monomers. It is a non-toxic, water-soluble compound commonly supplied as a colorless to light yellow liquid, featuring high chemical stability and an exceptional decomposition temperature exceeding 330℃, which enables it to retain performance under extreme thermal conditions in industrial applications.
HPMA is renowned for its superior scale inhibition and dispersion capabilities, with particular efficacy against mineral scales like calcium carbonate and calcium sulfate, as well as iron oxide deposition. It exhibits strong thermal stability and alkali resistance, performing reliably in alkaline environments (pH 7–10) and high-temperature systems. Additionally, it has good calcium tolerance and excellent compatibility with other water treatment chemicals such as zinc salts and organophosphonates, creating synergistic effects that enhance overall corrosion and scale inhibition efficiency without causing adverse reactions.
HPMA is primarily used as a high-performance scale inhibitor and dispersant in industrial water treatment, widely applied in oilfield circulating water systems, refinery cooling water treatment, and low-pressure boiler water conditioning to prevent scaling and clogging in pipelines and equipment. It is also suitable for seawater desalination flash units, industrial wastewater treatment, and circulating water reuse systems. Beyond water treatment, it finds auxiliary uses in papermaking, textile printing, and detergent formulations for its dispersion and stabilization properties.
The price of HPMA is influenced by multiple key factors, including raw material costs (with maleic anhydride prices closely tied to petrochemical market fluctuations), product specifications (such as molecular weight, solid content, and purity—higher purity or customized grades often command higher prices), and order quantity (bulk purchases typically qualify for volume discounts). Supply chain dynamics, such as transportation costs, regional market demand, and production capacity, also play a role, while customized formulations or specialized quality certifications may further impact pricing. For accurate and up-to-date quotes, it is recommended to consult suppliers with specific order details and application requirements.
Test Item | Typical Data |
Appearance | Tan paste at 25°C |
Solid content /% | ≥50.0 |
Density (20℃)/g·cm-3 | 1.22～1.25 |
pH (1% aqueous solution) | 2.0～3.0 |
Bromine value/mg·g-1 | ≤50.0 |
No. 113, Huayang Avenue, Baihe Town, Mengjin District, Luoyang City, Henan Province, China
