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HJW—109: A scale inhibitor specifically designed for phosphoric acid production. I. Properties: This product is primarily composed of organic polymer polycarboxylic acids, organic polyhydroxyl compounds, polyamino compounds, polymeric copolymers, and active additives; it is a fully organic specialty scale inhibitor. It exhibits excellent scale-inhibiting and dispersing properties under conditions of high salt content, high acidity, and high temperature. It exhibits excellent dispersing properties for sulfates, silicates, fluorides, pyrophosphates, etc., and is particularly used as a scale-inhibiting dispersant in the production of concentrated phosphoric acid. II. Technical Requirements Item Specification Appearance: Colorless to light yellow or dark brown liquid Solid content %: Type A ≥18.0; Type B ≥15.0 pH value (1% aqueous solution): ≤5.0 Density (20°C), g/cm3: ≥1.05 III. Applications: This product is mainly used as a scale-inhibiting and dispersing agent in concentrated phosphoric acid production systems. It is also suitable as a dispersing agent in slurries with high salt content, high acidity, and high temperatures. IV. Usage and Dosage: This product is added in a continuous manner, with the addition concentration determined by the grade of phosphate rock and its impurity composition. The recommended dosage is generally 100–300 mg/L. V. Packaging and Storage: This product is packaged in plastic drums, with a net weight of 25 kg or 200 kg per drum. Store in a cool, well-ventilated indoor area; shelf life is ten months.