Molekula
Sodium tripolyphosphate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Sodium tripolyphosphate is a versatile inorganic phosphate salt widely used as a water softener, detergent builder, and food additive (e.g., emulsifier, preservative). It prevents scale formation, enhances solubility, and improves texture in processed foods. Catalogue details: CAS 13573-18-7, molecular formula H₃Na₂O₁₀P₃, molecular weight 301.92, storage at ambient conditions, no hazard classification. Molekula supplies sodium tripolyphosphate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White solid |
| Identification | Conforms to Reference |
| Assay | ≥85.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 89981552 |
| CAS Number | 13573-18-7 |
| IUPAC Name | disodium;[hydroxy-[hydroxy(oxido)phosphoryl]oxyphosphoryl] hydrogen phosphate |
| EC Number | 237-004-9 |
| Molecular Formula | H3Na2O10P3 |
| Molecular Weight | 301.92 |
| Exact Mass | 301.8734 |
| SMILES | OP(=O)([O-])OP(=O)(O)OP(=O)(O)[O-].[Na+].[Na+] |
| InChIKey | YVBGRQLITPHVOP-UHFFFAOYSA-L |
| InChI | InChI=1S/2Na.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)/q2*+1;/p-2 |
| PubChem CID | 26118 |
| REACH Code | Y113 |
| HTS Code | 2835.31.0000 |
| Tariff Code | 2835310000 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- disodium;[hydroxy-[hydroxy(oxido)phosphoryl]oxyphosphoryl] hydrogen phosphate
- TRIPHOSPHORIC ACID, SODIUM SALT
- Triphosphoric acid, sodium salt (1:?)
Frequently asked questions
What is sodium tripolyphosphate commonly used for?
Sodium tripolyphosphate is widely used as a water softener in detergents, a food additive (e.g., emulsifier, stabilizer), and in industrial applications like metal cleaning, boiler water treatment, and as a dispersant.
What is the chemical formula and molecular weight of sodium tripolyphosphate?
The molecular formula of this product is H₃Na₂O₁₀P₃, and the molecular weight is 301.92 g/mol.
How should sodium tripolyphosphate be stored?
Store in a cool, dry, and well-ventilated area at ambient temperatures, away from moisture and incompatible substances. Keep containers tightly sealed.
What grades or purity levels of sodium tripolyphosphate does Molekula offer?
Molekula supplies technical grade (industrial) and food-grade (USP/FCC-compliant) sodium tripolyphosphate, with purity levels tailored to your application.
Can Molekula supply sodium tripolyphosphate in bulk quantities?
Yes, we offer bulk packaging options (e.g., 25 kg bags, 1 MT big bags) for both industrial and food-grade applications, with flexible MOQs based on your needs.
What documentation comes with a sodium tripolyphosphate order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation (e.g., food-grade compliance certificates if applicable).
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.