ICL Group Sodium Tripolyphosphate Anhydrous (STPP-960) TG

ICL Group Sodium Tripolyphosphate Anhydrous (STPP-960) TG is a granular substance primarily used as a buffering agent, detergent, chelating agent, and suspension aid in cleaning formulations. It exhibits detergency and sequestering properties, making it effective for various cleaning applications.

Chemical Name: Pentasodium triphosphate

CAS Number: 7758-29-4

Chemical Family: Phosphates, Sodium Salts

Grade: Technical Grade

Applicable Processes: Cement Manufacturing, Flotation, Slurry Deflocculation, Soil Stabilization, Textiles Manufacturing, Water Treatment, Wood Pulping

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Enhanced TDS

Identification & Functionality

Features & Benefits

Benefit Claims
HII Features
Industrial Additives Features
Key Properties
  • Sequestration:The phenomenon of binding metal ions in soluble complexes, thereby preventing the formation of undesirable precipitates or the occurrence of other detrimental side reactions. For example, sodium tripolyphosphate will combine with calcium and magnesium ions to form soluble but undissociated complexes, which remain in solution in the presence of precipitating anions.
  • Buffering:The agent that provides the desired pH level and maintains the proper alkalinity in solution. Sodium tripolyphosphate has modest buffer capacity; that is, it exhibits a relatively constant pH or degree of alkalinity in solution regardless of the concentration or temperature of the solution.
  • Deflocculation: the process by which aggregates of particles are broken up into individual particles that are then dispersed throughout the solution such as the dispersion of household soils in water.
  • Detergency: the capability of removing soil from the surface to which it is adhering. Soap and synthetics built with sodium tripolyphosphate show substantially greater detergency than either compound alone.

Applications & Uses


Physical Form
White granular
Typical Properties
ValueUnitsTest Method / Conditions
Molecular Weight367.9--
ValueUnitsTest Method / Conditions
Assay (as Na₅P₃O₁₀)min. 90%-
Assay (as P₂O₅)56 - 58%-
Water Insolublesmax. 0.1%-
pH (at 1% Solution)9.3 - 10.1--
Sizing (USSS, Retained on 20 mesh)max. 5%-
Sizing (USSS, Cumulative Retained on 100 mesh)min. 90%-

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Packaging Type
Supplied by
Packaging Information
  • 50 lb. multiwall bags
  • Super sacks, bulk

Storage & Handling

Shelf Life
18 months