Croda Dispersol PSR 19 is a polymeric anionic wetting and dispersing agent launched by Croda, specially developed for various agricultural formulations, with dual core functions of high-efficiency wetting and dispersion. Relying on its unique polymeric structure, it has excellent adsorption capacity for pigments and solid particles and steric hindrance effect, is compatible with various agricultural active ingredients
Excellent steric hindrance - Effectively inhibits particle agglomeration and improves long-term storage stability of agricultural preparations
Integrated dual functions - Combines wetting and dispersion effects to optimize formula performance in one stop
Outstanding sodium salt characteristics - Good solubility, suitable for aqueous agricultural systems and convenient construction
Obvious high molecular weight advantage - High molecular weight structure, better wetting and dispersion efficiency than conventional anionic surfactants
Strong compound compatibility - Compatible with various agricultural adjuvants and active ingredients, no compatibility conflicts
Agricultural suspension concentrates - Improve the dispersibility of solid components and avoid stratification and precipitation
Wettable powder formulations - Improve wetting and dissolution speed and enhance dispersion uniformity
Seed treatment preparations - Enhance wetting and penetration effects and improve the adhesion of active ingredients
Micronutrient preparations - Promote the dispersion of nutrients and improve crop absorption efficiency
Pesticide compounding systems - Optimize multi-component compatibility and improve the overall application effect of preparations
| Brand | Croda |
| Chemical Type | Anionic Wetting Agent; Sodium Dioctyl Sulfosuccinate |
| Chemical Composition | Sodium Dioctyl Sulfosuccinate |
| Active Ingredient Content | ≥98% (typical value) |
| Product Form | Solid (25℃) |
| Ionicity | Anionic |
| HLB Value | 13.0-15.0 (typical value) |
| Bulk Density | 0.75-0.85g/cm³ (typical value) |
| Melting Point | 103-107℃ (typical value) |
| Solubility | Water-soluble |
| pH Value (1% aq. sol.) | 5.5-7.0 (typical) |
| Surface Tension (0.1%) | 25-30 mN/m (typical) |
Q1: What is the primary function of Dispersol PSR 19 in pigment dispersion systems?
A: Dispersol PSR 19 is a high-performance wetting agent designed to reduce interfacial tension and promote rapid, uniform wetting of hydrophobic pigments and fillers in aqueous systems. It helps stabilize dispersions by enhancing particle deagglomeration and supporting long-term colloidal stability.
Q2: Is Dispersol PSR 19 suitable for use in low-VOC or zero-VOC coatings formulations?
A: Yes — Dispersol PSR 19 is a non-ionic, low-foaming surfactant with negligible volatile organic content, making it well-suited for environmentally compliant aqueous coatings, including architectural, industrial, and decorative applications targeting low- or zero-VOC regulatory frameworks.
Q3: How does Dispersol PSR 19 compare to conventional alkylphenol ethoxylates (APEOs) in terms of environmental profile?
A: Dispersol PSR 19 is an APEO-free, readily biodegradable alternative developed to meet evolving sustainability requirements. Unlike legacy APEO-based wetting agents, it avoids persistent, bioaccumulative metabolites and aligns with global chemical stewardship initiatives and major paint manufacturer restricted substances lists.
Q4: Can Dispersol PSR 19 be used in combination with other dispersants or rheology modifiers?
A: Yes — Dispersol PSR 19 demonstrates good compatibility with common polymeric dispersants, associative thickeners, and cellulose derivatives. Synergistic effects are often observed when paired with stabilizing dispersants, though optimal performance should be confirmed via formulation-specific testing under intended processing conditions.
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