Pigments bring rich, bright colors to products widely applied in interior decoration, construction and many other sectors. During pigment dispersion, stabilizing depolymerized pigment particles is critical. Without effective treatment, pigments tend to re-flocculate during storage and application, resulting in poor finished quality. Sodium hexametaphosphate (SHMP) delivers excellent dispersion performance for pigments, mitigating particle aggregation risks.

　　In pigment dispersion systems, pigment stability is mainly realized via electrostatic stabilization and steric protection. Surfactants and inorganic dispersants are commonly used for this purpose. SHMP aqueous solution presents alkaline properties, offering strong medium dispersion capacity and prominent viscosity-lowering effects, making it an ideal inorganic viscosity reducer.

　　SHMP reduces system viscosity effectively. After hydrolysis, phosphate ions (PO₄³⁻) readily adsorb onto the positively charged edges of binder platelets, forming negatively charged edges. With negative charges on both platelet surfaces and edges, mutual repulsion occurs. This forms a stable, low-viscosity, well-dispersed suspension in aqueous media and sharply cuts slurry viscosity.

　　The binding mechanism originates from the inherent properties of SHMP. With the molecular formula (NaPO₃)₆, sodium hexametaphosphate is a polyphosphate composed of long-chain anions. Its high-molecular-weight phosphate chains contain roughly 30~90 PO₃ units.

　　As an inorganic salt dispersant, SHMP refines the particle size of binder particles in water, weakens interparticle interaction, greatly lowers viscosity and improves fluidity of the whole system.

　　Chongqing Chuandong Chemical Group supplies high-quality sodium hexametaphosphate for pigment, coating and construction material formulations.