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Sodium Tripolyphosphate

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Sodium Tripolyphosphate molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 5 grades and pack sizes of Sodium Tripolyphosphate (CAS 7758-29-4). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS7758-29-4
Molecular formulaNa5O10P3
Molecular weight367.86 g/mol
IUPAC namepentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate
SynonymsPentasodium triphosphate · STPP · Armofos · Thermphos · Rhodiaphos LV · Thermphos N
Safety & Hazards (GHS) Warning
Irritant Irritant
  • H315 Causes skin irritation
  • H319 Causes serious eye irritation
  • H335 May cause respiratory irritation

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma PENTA-SODIUM TRIPHOSPHATE 72061-100G
72061-500G		 Request Quote
Sigma SODIUM TRIPOLYPHOSPHATE, TECH., 85% 238503-2.5KG
238503-25G
238503-500G		 Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.