Sodium Tripoly Phosphate

Sodium Tripoly Phosphate

CAS Number:7758‑29‑4

Synonyms:Sodium tripolyphosphate; STPP; Pentasodium triphosphate; Tripolyphosphate

Chemical Formula:Na₅P₃O₁₀

Molecular Weight:367.86 g/mol

Product Introduction

A white, odorless powder—water‑soluble and alkaline. Commonly used as a detergent builder, water softener, and sequestrant. Available in technical and food grades (≥85–99%)

Get Quote

Physical & Chemical Properties

Property Value
Appearance White granular or crystalline powder
Density @ 20 °C 2.52 g/cm³
Melting Point 622 °C
Solubility in Water ~14.5 g/100 mL @25 °C (anhydrous)
pH (1 % soln) 9.5–10.3
Vapor Pressure <0.1 hPa @20 °C

Applications

  • Detergent builder: enhances cleaning and softens water
  • Food processing: meat tenderizer, moisture binder, emulsifier
  • Water treatment: scale control in boilers/cooling towers
  • Ceramics, textiles, drilling fluids, animal feed: hydrogen peroxide stabilizer

Safety & Handling

  • Mild irritant (skin/eyes/respiratory). GHS: H303, H315, H319, H335. Use PPE, ventilate dust. Avoid ingestion/inhalation. Store sealed in dry area.

Products Category

+91 9867824846
Enquiry Now