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238503

Sigma-Aldrich

Sodium tripolyphosphate

technical grade, 85%

Synonym(s):

Pentasodium tripolyphosphate Anhydrous, STPP, Sodium triphosphate, Sodium triphosphate pentabasic, Sodium tripolyphosphate pentabasic

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About This Item

Linear Formula:
Na5P3O10
CAS Number:
7758-29-4
Molecular Weight:
367.86
EC Number:
231-838-7
MDL number:
MFCD00003514
UNSPSC Code:
12352302
PubChem Substance ID:
329752508
NACRES:
NA.55

grade

technical grade

Assay

85%

form

powder

pH

9.5-10.3 (1 g/L)

SMILES string

[Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O

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

InChI key

HWGNBUXHKFFFIH-UHFFFAOYSA-I

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General description

Sodium tripolyphosphate (STPP) is widely employed as a deflocculant. The major applications of STPP as laundry detergents and cleansing agents. STPP provides benefits such as pH buffering, soil emulsification and hard water sequestration for effective surfactant performance.

Application

Sodium tripolyphosphate is used:
  • As a corrosion inhibitor for steel.
  • In the preparation of chitosan nanoparticles (CSNPs) by ionic gelation.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Monireh Rasoulzadehzali et al.
International journal of biological macromolecules, 116, 54-63 (2018-05-01)
The present project describes the facile preparation of novel pH-sensitive bio-nanocomposite hydrogel beads based on chitosan (CH) and GO-Ag nanohybrid particles for controlled release of anti-cancer drugs such as doxorubicin (DOX). The loading efficiency of doxorubicin into test beads was
Ming-Hui Yang et al.
International journal of molecular sciences, 16(1), 1657-1676 (2015-01-15)
Silk fibroin (SF) is a protein with bulky hydrophobic domains and can be easily purified as sericin-free silk-based biomaterial. Silk fibroin modified chitosan nanoparticle (SF-CSNP), a biocompatible material, has been widely used as a potential drug delivery system. Our current
Sodium tripolyphosphate and polyphosphate as dispersing agents for kaolin suspensions: rheological characterization.
Papo A, et al.
Colloids and Surfaces. A, Physicochemical and Engineering Aspects, 201(1), 219-230 (2002)
Ultrastructural, Morphological, and Antifungal Properties of Micro and Nanoparticles of Chitosan Crosslinked with Sodium Tripolyphosphate.
Cota-Arriola O, et al.
Journal of Polymers and the Environment, 21(4), 971-980 (2013)
Veronica Martinez-Rios et al.
Food microbiology, 84, 103255-103255 (2019-08-20)
The aim of this study was to develop and validate a growth and growth boundary model with terms for melting salts to predict growth of Listeria monocytogenes in spreadable processed cheese. Cardinal parameter terms for phosphate salts and citric acid
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