Description

Phosphonic Acid, (1-Methylethenyl)-, Homopolymer, Sodium Salt is a high-performance, water-soluble polymer belonging to the class of phosphonate scale inhibitors. This compound is valued for its exceptional ability to control scale formation and inhibit corrosion in complex aqueous systems, even under high-temperature and high-hardness conditions. It is a critical component for industrial water treatment, particularly in cooling towers, boilers, and reverse osmosis systems, where it prevents the precipitation of calcium carbonate, calcium sulfate, and barium sulfate. Its unique polymeric structure provides superior threshold inhibition and compatibility with other treatment chemicals, making it a preferred choice for formulators and plant operators seeking reliable and efficient water management solutions.

Application

• Industrial Water Treatment: Primary application as a highly effective scale and corrosion inhibitor in recirculating cooling water systems, boiler water, and desalination plants.
• Oilfield Chemistry: Used in squeeze treatments and as an additive in drilling and completion fluids to prevent mineral scale deposition in downhole equipment and formations.
• Detergent & Cleaning Formulations: Acts as a builder and chelating agent in industrial and institutional cleaning products to sequester hardness ions and enhance cleaning efficiency.
• Pulp & Paper Processing: Employed to control scale in digesters, bleach plants, and paper machines, improving operational efficiency and product quality.
• Textile Processing: Prevents scale buildup on machinery and fabrics during dyeing and finishing operations, ensuring consistent color and fabric quality.
• Metal Surface Treatment: Used in metal cleaning and plating baths to control water hardness and prevent spotting or film formation on finished surfaces.

Basic Information

Product Name	Phosphonic Acid, (1-Methylethenyl)-, Homopolymer, Sodium Salt
CAS No.	118632-18-1
Molecular Formula	(C3H5O3P)n·xNa
Molecular Weight	Contact for details (Polymer)
Synonyms	Poly(vinylphosphonic acid) sodium salt; Sodium poly(vinylphosphonate); PVPA, sodium salt; Vinylphosphonic acid homopolymer sodium salt; Phosphonic acid, P-ethenyl-, homopolymer, sodium salt; 2-Phosphonoethen-1-ol homopolymer sodium salt; Polyvinylphosphonic acid sodium salt; Sodium polyvinylphosphonate
EINECS	Contact for details

Quality Control

Our production of Phosphonic Acid, (1-Methylethenyl)-, Homopolymer, Sodium Salt adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed against comprehensive specifications, including active content, pH, viscosity, and residual monomer levels. Certificates of Analysis (COA) documenting these parameters are provided with every shipment. We operate under a cGMP-aligned quality system and can support compliance with relevant global regulations such as REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product quality and handling properties. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Active Content (as acid)	40 - 50 % (or as specified)
pH (as supplied, 1% solution)	6.0 - 8.0
Density (at 20°C)	1.20 - 1.30 g/cm³
Identification (IR)	Conforms
Viscosity	Contact for details
Residual Monomer	< 0.5 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.