Sodium Tripolyphosphate


CAS #:

Linear Formula:


MDL Number:


EC No.:



(2N) 99% Sodium Tripolyphosphate
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(3N) 99.9% Sodium Tripolyphosphate
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(4N) 99.99% Sodium Tripolyphosphate
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Sodium Tripolyphosphate Properties (Theoretical)

Compound Formula Na5O10P3
Molecular Weight 367.864132 g/mol
Appearance White powder or granules
Melting Point 622 °C
Boiling Point N/A
Density 2.52 g/cm3
Solubility in H2O 14.5 g/100 mL
Exact Mass 367.819277 g/mol
Monoisotopic Mass 367.819277 g/mol

Sodium Tripolyphosphate Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
RTECS Number YK4570000
Transport Information N/A
WGK Germany 1

About Sodium Tripolyphosphate

High purity Sodium TripolyphosphateSodium Tripolyphosphate is generally immediately available in most volumes. Please request a quote above to receive pricing information based on your specifications.

Sodium Tripolyphosphate Synonyms

STPP, Sodium triphosphate, STP, tripolyphosphate, TPP, Pentasodium triphosphate

Chemical Identifiers

Linear Formula Na5P3O10
MDL Number MFCD00003514
EC No. 231-838-7
Beilstein/Reaxys No. N/A
Pubchem CID 24455
IUPAC Name pentasodium; [oxido(phosphonatooxy)phosphoryl] phosphate
SMILES [O-]P(=O)([O-])OP(=O)([O-])OP(=O)([O-])[O-].[Na+].[Na+].[Na+].[Na+].[Na+]
InchI Identifier InChI=1S/5Na.H5O10P3/c;;;;;1-11(2,3)9-13(7,8)10-12(4,5)6/h;;;;;(H,7,8)(H2,1,2,3)(H2,4,5,6)/q5*+1;/p-5

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


Phosphorus Bohr ModelSee more Phosphorus products. Phosphorus (atomic symbol: P, atomic number: 15) is a Block P, Group 15, Period 3 element. The number of electrons in each of Phosphorus's shells is 2, 8, 5 and its electronic configuration is [Ne] 3s2 3p3. The phosphorus atom has a radius of and its Van der Waals radius is Phosphorus is a highly-reactive non-metallic element (sometimes considered a metalloid) with two primary allotropes, white phosphorus and red phosphorus its black flaky appearance is similar to graphitic carbon. Compound forms of phosphorus include phosphates and phosphides. Phosphorous was first recognized as an element by Hennig Brand in 1669 its name (phosphorus mirabilis, or "bearer of light") was inspired from the brilliant glow emitted by its distillation.


Sodium Bohr ModelSee more Sodium products. Sodium (atomic symbol: Na, atomic number: 11) is a Block D, Group 5, Period 4 element with an atomic weight of 22.989769. The number of electrons in each of Sodium's shells is [2, 8, 1] and its electron configuration is [Ne] 3s1. The sodium atom has a radius of 185.8 pm and a Van der Waals radius of 227 pm. Sodium was discovered and first isolated by Sir Humphrey Davy in 1807. In its elemental form, sodium has a silvery-white metallic appearance. It is the sixth most abundant element, making up 2.6 % of the earth's crust. Sodium does not occur in nature as a free element and must be extracted from its compounds (e.g., feldspars, sodalite, and rock salt). The name Sodium is thought to come from the Arabic word suda, meaning "headache" (due to sodium carbonate's headache-alleviating properties), and its elemental symbol Na comes from natrium, its Latin name.

Recent Research


May 28, 2024
Los Angeles, CA
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University of Saskatchewan research team develops bioplastic that can absorb phosphate from water and be used as fertilizer

University of Saskatchewan research team develops bioplastic that can absorb phosphate from water and be used as fertilizer