Sodium Tripolyphosphate

Sodium Tripolyphosphate (STPP) is an essential inorganic compound widely recognized for its superior chelating and dispersing properties. Featuring a high purity of ≥ 94.0%, it acts as a primary builder in synthetic detergents, effectively softening water and preventing dirt redeposition. Beyond cleaning products, STPP is a highly effective deflocculant in ceramic manufacturing, a premium scale inhibitor for industrial water treatment, and a reliable dispersant in construction materials.

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Product Description

Appearance:

White powder or granular.

Specifications (Industrial Grade – 94%):

Item	Technical Standard
Main Content (Na₅P₃O₁₀)	≥ 94.0%
Phosphorus Pentoxide (P₂O₅)	≥ 57.0%
Water Insoluble Matter	≤ 0.10%
Iron (Fe)	≤ 0.01%
pH Value (1% aqueous solution)	9.2 – 10.0

Applications:

Detergent & Cleaning Industry: Acts as a primary builder in synthetic detergents and soaps. It effectively softens hard water by chelating calcium and magnesium ions, prevents dirt from redepositing on fabrics, and maintains alkalinity for optimal cleaning performance.

Ceramics & Refractory: Widely used as a highly effective deflocculant and dispersant in ceramic slip preparation, significantly reducing the slurry’s viscosity and improving mud fluidity.

Water Treatment: Functions as a premium scale inhibitor and water softener in industrial cooling water systems, preventing pipe corrosion and scaling.

Concrete & Construction: Serves as an auxiliary set retarder and powerful dispersant in concrete admixtures, water-based paints, and coatings, helping to improve workability and stability.

Safety & Handling:

Precautions: This product is non-toxic but mildly alkaline. Prolonged skin contact may cause dryness or irritation. Avoid breathing dust. Wear standard personal protective equipment (PPE), including dust masks and gloves, during operation.

Packaging & Storage:

Standard Packaging: 25kg PP woven bags with PE inner liner, or 1000kg Jumbo bags.

Storage Recommendations: Store in a cool, dry, and well-ventilated indoor warehouse. Ensure packaging is tightly sealed to prevent moisture absorption and caking. Keep separate from strong acids.

Shelf Life: 24 months (under strictly dry and sealed conditions).

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