Sodium tripolyphosphate - AR, ≥98% , CAS No.7758-29-4

CAS: 7758-29-4 Cat. No.: S100099 Formula: Na5P3O10 Molecular Weight: 367.86 EC Number: 231-838-7
AVAILABLE TO ORDER
GRADE & PURITY AR ? Analytical Reagent grade — high-purity chemicals meeting strict assay limits for lab analysis. Use when accuracy matters and trace impurities could skew results. ≥98%
Synonyms
Pentasodium triphosphate | STPP | Triphosphoric acid, pentasodium salt
Storage
Room temperature,Argon charged
Shipped In
Normal
★
Size
USA
Germany (EU)*
Price
Qty
500g
S100099-500g
—
1 In stock
$26.90
12×500g
S100099-12×500g
Made to order · 8–12 wks
$270.90
Enter a quantity for the sizes you want to add.
🧪
Why this grade

AR, ≥98% AR for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature,Argon charged Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 203 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Pentasodium triphosphate | STPP | Triphosphoric acid, pentasodium salt
Specifications & Purity
AR, ≥98%
Storage
Room temperature,Argon charged
Shipped In
Normal
Grade
AR
Purity
≥98%
Names and Identifiers
Pubchem Sid
Canonical Smiles
[O-]P(=O)([O-])OP(=O)([O-])OP(=O)([O-])[O-].[Na+].[Na+].[Na+].[Na+].[Na+]
IUPAC Name
pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate
InChIKey
HWGNBUXHKFFFIH-UHFFFAOYSA-I
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
Isomeric SMILES
[O-]P(=O)([O-])OP(=O)([O-])OP(=O)([O-])[O-].[Na+].[Na+].[Na+].[Na+].[Na+]
WGK Germany
1
RTECS
YK4570000
Alternate CAS
15091-98-2
Molecular Weight
367.86

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

<<<<<<< HEAD Download SDS → ======= Download SDS → >>>>>>> release248-p3

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassMixed metal/non-metal compounds
ClassAlkali metal oxoanionic compounds
SubclassAlkali metal phosphates
Intermediate Tree Nodes Not available
Direct ParentAlkali metal phosphates
Alternative Parents Inorganic sodium salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Alkali metal phosphate - Inorganic sodium salt - Inorganic oxide - Inorganic salt
DescriptionThis compound belongs to the class of inorganic compounds known as alkali metal phosphates. These are inorganic compounds in which the largest oxoanion is phosphate, and in which the heaviest atom not in an oxoanion is an alkali metal.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates (CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

58 results found

Lot NumberCertificate TypeDateItem
I2610613I2610613Certificate of AnalysisSep 07, 2026 S100099
I2610611I2610611Certificate of AnalysisSep 07, 2026 S100099
G2629609G2629609Certificate of AnalysisJul 20, 2026 S100099
G2629606G2629606Certificate of AnalysisJul 20, 2026 S100099
H2620092H2620092Certificate of AnalysisJul 20, 2026 S100099
H2618229H2618229Certificate of AnalysisJul 20, 2026 S100099
G2614538G2614538Certificate of AnalysisJun 22, 2026 S100099
G2617615G2617615Certificate of AnalysisJun 22, 2026 S100099
G2614539G2614539Certificate of AnalysisJun 22, 2026 S100099
F2602482F2602482Certificate of AnalysisMar 20, 2026 S100099
F2602299F2602299Certificate of AnalysisMar 20, 2026 S100099
D2607441D2607441Certificate of AnalysisMar 20, 2026 S100099
D2607440D2607440Certificate of AnalysisMar 20, 2026 S100099
D2607425D2607425Certificate of AnalysisMar 20, 2026 S100099
A2614654A2614654Certificate of AnalysisDec 29, 2025 S100099
A2614650A2614650Certificate of AnalysisDec 29, 2025 S100099
A2614516A2614516Certificate of AnalysisDec 29, 2025 S100099
H2527570H2527570Certificate of AnalysisAug 15, 2025 S100099
H2527461H2527461Certificate of AnalysisAug 15, 2025 S100099
H2527467H2527467Certificate of AnalysisAug 15, 2025 S100099
D2516628D2516628Certificate of AnalysisMar 14, 2025 S100099
D2516629D2516629Certificate of AnalysisMar 14, 2025 S100099
D2528191D2528191Certificate of AnalysisMar 14, 2025 S100099
D2528278D2528278Certificate of AnalysisMar 14, 2025 S100099
C2117141C2117141Certificate of AnalysisJan 10, 2025 S100099
L2418849L2418849Certificate of AnalysisDec 09, 2024 S100099
L2418820L2418820Certificate of AnalysisDec 09, 2024 S100099
K2404504K2404504Certificate of AnalysisOct 14, 2024 S100099
K2404684K2404684Certificate of AnalysisOct 14, 2024 S100099
H2428020H2428020Certificate of AnalysisAug 12, 2024 S100099
H2423128H2423128Certificate of AnalysisAug 12, 2024 S100099
F2421488F2421488Certificate of AnalysisJun 11, 2024 S100099
F2421489F2421489Certificate of AnalysisJun 11, 2024 S100099
F2421490F2421490Certificate of AnalysisJun 11, 2024 S100099
D2425491D2425491Certificate of AnalysisApr 15, 2024 S100099
D2425377D2425377Certificate of AnalysisApr 15, 2024 S100099
D2425366D2425366Certificate of AnalysisApr 15, 2024 S100099
C2407532C2407532Certificate of AnalysisFeb 28, 2024 S100099
C2406002C2406002Certificate of AnalysisFeb 28, 2024 S100099
C2406001C2406001Certificate of AnalysisFeb 28, 2024 S100099
F2312950F2312950Certificate of AnalysisApr 03, 2023 S100099
F2312953F2312953Certificate of AnalysisApr 03, 2023 S100099
C2310558C2310558Certificate of AnalysisFeb 02, 2023 S100099
C2310398C2310398Certificate of AnalysisFeb 02, 2023 S100099
C2310396C2310396Certificate of AnalysisFeb 02, 2023 S100099
L2214047L2214047Certificate of AnalysisDec 22, 2022 S100099
A23311064A23311064Certificate of AnalysisDec 19, 2022 S100099
A23311065A23311065Certificate of AnalysisDec 19, 2022 S100099
A23311027A23311027Certificate of AnalysisDec 19, 2022 S100099
H2212521H2212521Certificate of AnalysisJun 06, 2022 S100099
H2212522H2212522Certificate of AnalysisJun 06, 2022 S100099
H2212519H2212519Certificate of AnalysisJun 06, 2022 S100099
C2205522C2205522Certificate of AnalysisFeb 16, 2022 S100099
C2205511C2205511Certificate of AnalysisFeb 16, 2022 S100099
C2205529C2205529Certificate of AnalysisFeb 16, 2022 S100099
B2217153B2217153Certificate of AnalysisDec 27, 2021 S100099
B2217146B2217146Certificate of AnalysisDec 27, 2021 S100099
B2217145B2217145Certificate of AnalysisDec 27, 2021 S100099
Chemical and Physical Properties
SolubilitySoluble in water. Slightly soluble in methanol. Insoluble in diethyl ether and n-octanol.
SensitivityMoisture sensitive
Melt Point(°C)622°C
Molecular Weight367.860 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count10
Rotatable Bond Count2
Exact Mass367.819 Da
Monoisotopic Mass367.819 Da
Topological Polar Surface Area185.000 Ų
Heavy Atom Count18
Formal Charge0
Complexity241.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count6
Documents & Articles
A Practical Guide to Fragrance Compositions: Turning a Black-Box Formula into an Engineerable System—Compatibility, Stability, Controlled Release, Traceability, and Selection
Key Judgments in Medical Hydrogel R&D: From Polymer Source and Crosslinking Strategy to Sterilization Planning, Scale-Up Feasibility, and Quality Control
Why LABSA (Sulfonic Acid) Is Commonly Used in Household Cleaning Formulations: Neutralization Mechanism, Detergency Action, and Formulation Application Points
Differences, Mechanisms of Action, and Selection of Sodium Metasilicate and Sodium Tripolyphosphate in Detergent and Cleaning Formulations
The Role, Selection, and Validation of Chelating Agents in Daily Chemical Formulations
Differences, Functions, and Selection Guidelines for Sodium Hydroxide Flakes, Granules, Liquid Caustic Soda, and Caustic Soda in Household and Personal Care Product Manufacturing: The Functional and Application Logic of Sodium Hydroxide
Why Daily Chemical Formulations Need Alkaline Ingredients: From pH Adjustment and Saponification to Detergency Boosting and Selection Logic
How Can Sodium Tripolyphosphate (STPP) Be Replaced? From Detergency Mechanisms to Formulation Choices for Low-Phosphorus/Phosphorus-Free Builder Systems
What Are the Differences Among Sodium Dodecylbenzenesulfonate/SDBS, LAS, and Sodium α-Olefin Sulfonate/AOS: A Comparative Overview of Synthesis, Structure, Mechanism of Action, and Formulation Selection
Sodium Metasilicate in Cleaning Applications: Hydration-Form Differences, Mechanisms of Action, and Selection Logic
Analysis of the Foaming Performance Differences Between K12 and AOS: Structure, Acid–Base Stability, and Formulation Selection
Structure, Properties, and Mechanisms of Powdered Fragrances and Fragrance Delivery Materials: Stability, Release Mechanisms, and Selection Logic
Key Variable in the Long-Term Stability of Waterborne Pigment Concentrates: How Dispersant Molecular Weight Distribution (MWD) Affects Pigment Dispersion, Surface Adsorption-Layer Formation, and Storage Stability
Influencing Factors and Control Strategies for Blistering in Neutral Wall Putty: An Experimental Analysis Based on HPMC Dosage, Viscosity, and Ground Calcium Carbonate Fineness
Differences and Application Selection of Cassava- and Corn-Based Pregelatinized Starch in Neutral Putty Formulations
The Role, Selection, Cracking Risk Analysis, and Dosage Control of Bentonite in Neutral Putty
How Arbutin Regulates Melanin Production: α/β Anomeric Configuration and Tyrosinase Action
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.