Description

2-Butenedioic Acid (2Z)-, Homopolymer, Sodium Salt is a high-purity, water-soluble polymer derived from maleic acid. This specialized polyelectrolyte is valued for its exceptional scale inhibition and dispersant properties in aqueous systems. It is a critical component for industrial water treatment, detergent formulations, and mineral processing, where it effectively controls calcium carbonate and sulfate scales. The product, identified by CAS No. 30915-61-8, is supplied as a consistent, free-flowing powder to ensure reliable performance in demanding applications.

Application

• Industrial Water Treatment: Primary application as a highly effective threshold scale inhibitor for cooling water, boiler water, and reverse osmosis systems.
• Detergent & Cleaning Formulations: Acts as a builder and anti-redeposition agent to enhance cleaning power and prevent soil from re-depositing on fabrics.
• Mineral Processing & Pulp & Paper: Used as a dispersant to prevent agglomeration and scaling in process waters, improving efficiency and product quality.
• Textile Industry: Serves as an anti-precipitant and dispersant in dyeing and finishing baths to ensure uniform color and prevent spotting.
• Oilfield Chemicals: Incorporated into drilling muds and production chemicals for scale control and fluid stabilization.
• Construction Chemicals: Added to cement and concrete admixtures as a superplasticizer and water-reducing agent.

Basic Information

Product Name	2-Butenedioic Acid (2Z)-, Homopolymer, Sodium Salt
CAS No.	30915-61-8
Molecular Formula	(C4H2O4)n·xNa
Molecular Weight	Variable (Polymer)
Synonyms	Poly(maleic acid, sodium salt); Sodium polymaleate; Maleic acid homopolymer sodium salt; Polymaleic acid sodium salt; PMA-Na; Sokalan® CP series (BASF); Belclene® 200 series (BWA); Dispex® G40 (BASF); Acumer® 2000 (Rohm and Haas)
EINECS	Contact for details

Quality Control

Our production of Sodium Polymaleate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay, residual monomer content, pH, and viscosity measurements, to ensure it meets precise performance specifications. Certificates of Analysis (COA) documenting these results are provided to guarantee traceability and consistency for our global B2B clients.

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); the container must be kept tightly sealed after opening to prevent caking and degradation due to moisture absorption.

Specification

Item	Specification
Appearance	White to off-white free-flowing powder
Assay (as dry solid)	≥ 95.0 %
pH (1% aqueous solution)	6.0 - 8.0
Residual Monomer (Maleic Acid)	≤ 1.0 %
Moisture Content	≤ 5.0 %
Bulk Density	0.5 - 0.8 g/mL
Identification (IR)	Conforms

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