Sodium Tripolyphosphate (STPP)

Chemical FormulaNa₅P₃O₁₀
CAS Number7758-29-4
EC Number231-838-7

Description

Sodium tripolyphosphate (STPP) is a key builder in detergents that sequesters calcium and magnesium ions in hard water.

Physical Properties

Appearance: White granular powder Purity: 94% Na₅P₃O₁₀ min Density: 0.7–1.0 g/cm³ Highly water-soluble Alkaline solution

Industrial Applications

• Laundry detergents (phosphate builder) • Dishwasher detergents • Industrial cleaning • Food industry (E451, texturiser) • Water treatment • Ceramics (deflocculant)

Quality & Standards

Food grade (E451) and technical grade available. REACH compliant.

Delivery Terms

Direct supply from manufacturing facilities to customer site. Incoterms 2020: EXW, FCA, DAP, CPT. Standard lead time 5–10 business days within Europe and beyond.

Safety & Handling

Mild irritant. Not classified as dangerous goods.

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