ICL Group Sodium Tripolyphosphate (STPP-068) TG

ICL Group Sodium Tripolyphosphate (STPP-068) TG is granular in form, serving as a buffering agent, detergent, and chelating agent in cleaning ingredients. Additionally, it functions as a suspension aid in 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%-
Loss on Ignition (30minutes at 800°C)max. 0.5--
pH (at 1% Solution)9.5 - 10.1--
Water Insolublesmax. 0.1%-
Sizing (USSS, Retained on 16 mesh)max. 2.5%-
Sizing (USSS, Through 100 mesh)max. 30%-
Bulk Densitymax. 0.70g/cc-

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Packaging Type
Supplied by
Packaging Information

1200 & 1500 lb. super sacks

Storage & Handling

Shelf Life
18 months