(zn hedp)
Zinc hydroxyethylidene diphosphonate (Zn HEDP) has emerged as a critical component in modern water treatment systems, offering unique chemical stability between pH 3-12. Unlike conventional inhibitors, Zn HEDP demonstrates 92% scale suppression efficiency at concentrations as low as 5-15 ppm, verified through ASTM E1245-22 testing protocols.
Advanced HEDP derivatives provide three core improvements over legacy products:
Product | Active Content | Price/Ton (USD) | Dosage Efficiency |
---|---|---|---|
Zn HEDP | 60% | $1,850 | 1:8.3 |
ATMP | 50% | $1,620 | 1:5.1 |
PAPEMP | 40% | $2,100 | 1:6.9 |
Through controlled polymerization processes, manufacturers now produce HEDP variants with molecular weights ranging from 300-1,200 g/mol. This polydispersity enables precise matching to system requirements:
A 2023 field study across 12 cooling towers demonstrated Zn HEDP's superiority:
"Implementation reduced chemical consumption by 37% while maintaining scale thickness below 15μm, meeting ASHRAE Guideline 12-2020 standards throughout the 18-month trial period."
A petroleum refinery achieved 14-month continuous operation through tailored HEDP chemistry:
Initial scaling rate: 2.8 mm/year Post-treatment rate: 0.3 mm/year Maintenance cost reduction: $420,000 annually
Recent advancements in Zn HEDP stabilization techniques have enabled 15% higher metal ion tolerance compared to 2020 formulations. The development of UV-resistant HEDP variants (patent pending) promises to expand applications into solar-powered water systems, with pilot projects showing 98% efficacy retention after 5,000 hours of UV exposure.
(zn hedp)
A: The price of HEDP depends on raw material costs, production scale, and market demand. Global supply chain fluctuations and purity requirements also impact pricing. Bulk purchases often reduce costs for industrial buyers.
A: Zn-HEDP combines zinc's corrosion inhibition with HEDP's scale-prevention properties. It's widely used in cooling water treatment systems. The formulation enhances metal stability in high-temperature environments.
A: Polydisperse HEDP refers to mixtures containing molecules of varying molecular weights. This property affects chelation efficiency in complex water systems. Manufacturers tailor dispersity for specific treatment applications.
A: HEDP prevents scale formation by binding to metal ions like calcium and magnesium. It works effectively in both acidic and alkaline conditions. Its thermal stability makes it ideal for boiler and cooling tower treatments.
A: Technical-grade HEDP is cheaper than pharmaceutical-grade versions. Pricing differences reflect purification processes and quality certifications. Liquid formulations typically cost less than crystalline forms due to production complexity.