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Merck

238503

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
NACRES:
NA.55
PubChem Substance ID:
329752508
UNSPSC Code:
12352302
EC Number:
231-838-7
MDL number:
MFCD00003514
Assay:
85%
Grade:
technical grade
Form:
powder

Key Documents

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grade

technical grade

Quality Level

100

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

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
0000486443
0000486443
0000482453
0000482453
0000438853

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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)
Elham Bahreini et al.
Nanoscale research letters, 9(1), 340-340 (2014-08-13)
This paper describes the production, purification, and immobilization of l-asparaginase II (ASNase II) in chitosan nanoparticles (CSNPs). ASNase II is an effective antineoplastic agent, used in the acute lymphoblastic leukemia chemotherapy. Cloned ASNase II gene (ansB) in pAED4 plasmid was
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
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