Molekula
Pentasodium triphosphate
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
Penta-sodium triphosphate (Na5P3O10, CAS 7758-29-4) is a water-soluble inorganic phosphate salt widely used as a sequestrant, dispersant, and builder in detergents, water treatment, and food processing to prevent scale formation and improve efficiency. It has a molecular weight of 367.86 g/mol and is stable under ambient storage conditions; it carries the signal word Warning, with hazard statements H315 (causes skin irritation), H319 (causes serious eye irritation) and H335 (may cause respiratory irritation). Molekula supplies penta-sodium triphosphate 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
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £26.40 per pack ex VAT · £31.68 inc. VAT
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500 g — £76.30 per pack ex VAT · £91.56 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder or crystals |
| Identification | Conforms to reference |
| Assay | 98.00% - 100% |
| P2O5 | 57 - 59% |
| Iron (Fe) | ≤0.015% |
| Solubility (Turbidity) | Clear |
| Solubility (Method) | 0.1G in 10ml water. |
| Solubility (Colour) | Colourless |
| Lead (Pb) | ≤0.001% |
| Arsenic (As) | ≤0.0003% |
| X-Ray Diffraction | Conforms to structure |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White powder |
| Melting Point | 622 °C |
| Solubility (other solvents) | Freely soluble in water. Insoluble in ethanol |
Source: PubChem CID 24455 (HSDB, ICSC, EU Food Improvement Agents)
Identification
| Property | Value |
|---|---|
| SKU | 37790542 |
| CAS Number | 7758-29-4 |
| IUPAC Name | pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate |
| EC Number | 231-838-7 |
| Molecular Formula | Na5P3O10 |
| Molecular Weight | 367.86 |
| Exact Mass | 367.8193 |
| SMILES | [O-]P(=O)([O-])OP(=O)([O-])OP(=O)([O-])[O-].[Na+].[Na+].[Na+].[Na+].[Na+] |
| InChIKey | HWGNBUXHKFFFIH-UHFFFAOYSA-I |
| InChI | 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 |
| PubChem CID | 24455 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2835.39.5000 |
| Tariff Code | 2835390000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+P352 IF ON SKIN: Wash with soap and water
- P304+P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+P351+P338 IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do, continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
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
- Armofos
- Rhodiaphos LV
- Sodium phosphate (Na5P3O10)
- Sodium triphosphate (Na5P3O10)
- STPP
- Thermphos
- Thermphos L 50
- Thermphos N
- Thermphos SPR
- Triphosphoric acid, pentasodium salt
Frequently asked questions
What is penta-sodium triphosphate (Na5P3O10) commonly used for?
Penta-sodium triphosphate is primarily used as a water softener in detergents, sequestrant in food processing, and dispersant in industrial cleaning formulations.
What is the molecular formula and molecular weight of penta-sodium triphosphate?
The molecular formula is Na₅P₃O₁₀, and the molecular weight is 367.86 g/mol.
How should penta-sodium triphosphate be stored?
Store in a cool, dry place at ambient temperature, away from moisture and incompatible substances. Keep containers tightly sealed.
What grades of penta-sodium triphosphate does Molekula supply?
Molekula supplies technical-grade and food-grade (when applicable) penta-sodium triphosphate, depending on the intended application.
Can Molekula supply penta-sodium triphosphate in bulk quantities?
Yes, Molekula can supply bulk quantities of penta-sodium triphosphate, with packaging options tailored to customer needs (e.g., drums, bags).
What documentation comes with an order of penta-sodium triphosphate?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
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.