Molekula
Sodium metaphosphate
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 metaphosphate is a water-soluble inorganic salt primarily used as a sequestrant, dispersant, and flame retardant in industrial processes, including water treatment, detergent formulation, and food preservation. It also serves as an abrasive and polishing agent in toothpaste and dentifrice formulations, and is used in textile processing, dyeing and laundering. It effectively binds metal ions to prevent scaling and improves product stability. Catalogue details include a CAS number of 10361-03-2 with the molecular formula (NaPO₃)ₙ, stored at ambient conditions, and no signal word required for safety classification. Molekula supplies Sodium metaphosphate 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.
-
1 kg — £60.70 per pack ex VAT · £72.84 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 crystalline powder |
| Grade | Industry grade |
| Assay | >99% |
| Residue on Ignition | <1.0% |
| Fe2O3 | <2ppm |
| Assay(P2O5) | 70% +/- 1% |
| Copper (Cu) | <0.1ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 628 °C |
Source: PubChem CID 16133893 (PAC Chemical Database)
Identification
| Property | Value |
|---|---|
| SKU | 90027092 |
| CAS Number | 10361-03-2 |
| EC Number | 238-595-6 |
| Molecular Formula | (NaPO3)n |
| Molecular Weight | N/A |
| Exact Mass | 101.9483 |
| SMILES | [O-]P(=O)=O.[Na+] |
| InChIKey | AQMNWCRSESPIJM-UHFFFAOYSA-M |
| InChI | InChI=1S/Na.HO3P/c;1-4(2)3/h;(H,1,2,3)/q+1;/p-1 |
| PubChem CID | 16133893 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2835395000 |
| Tariff Code | 2835390000 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- 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
- Insoluble metaphosphate
- Kurrol's salt
- Maddrell's salt
- Metaphosphoric acid (HPO3), sodium salt
- Metaphosphoric acid, sodium salt
- Sodium Kurrol's salt
- Sodium metaphosphate (NaPO3)
- Sodium phosphate (NaPO3)
- sodium phosphenate
- Sporix
Frequently asked questions
What is sodium metaphosphate commonly used for?
Sodium metaphosphate is primarily used as a sequestrant in detergents, a food additive (E452) for emulsification and pH control, and in industrial water treatment to prevent scale buildup.
What is the chemical formula and molecular weight of sodium metaphosphate?
The chemical formula is **(NaPO₃)ₙ** (a polymeric form), but the exact molecular weight (MW) varies by chain length and is not fixed.
How should sodium metaphosphate be stored?
Store in a cool, dry place at **ambient temperature**, away from moisture and incompatible substances, in a tightly sealed container.
What grades of sodium metaphosphate does Molekula supply?
Molekula supplies **technical/industrial grade** sodium metaphosphate, suitable for detergents, water treatment, and general industrial applications.
Can Molekula supply sodium metaphosphate in bulk quantities?
Yes, we offer **bulk packaging options** (e.g., 25kg bags, 1MT big bags) for large-scale industrial and commercial customers—please inquire for specific availability.
What documentation comes with a sodium metaphosphate order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a packing list; additional documentation like a **Certificate of Conformity (CoC)** may be provided upon request.
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.