Molekula
Sodium pyrophosphate anhydrous
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 pyrophosphate anhydrous is a white, crystalline powder used as a water softener, detergent builder, and food additive. It is also employed in metal cleaning and corrosion inhibition. CAS: 7722-88-5, Molecular formula: Na4O7P2, Molecular weight: 265.90 g/mol, Storage: Ambient, Signal word: Danger. Molekula supplies Sodium pyrophosphate anhydrous 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 — £58.70 per pack ex VAT · £70.44 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 |
| Assay (aqueous acid-base titration) | ≥ 98% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Crystals |
| Odour | Odorless. |
| Melting Point | 988 °C |
| Density | 2.5 (relative, water = 1) |
| Solubility (other solvents) | Soluble in water. Insoluble in ethanol |
| Vapour Pressure | 0 mmHg (approx) |
| Refractive Index | 1.450 |
Source: PubChem CID 24403 (HSDB, ICSC, EU Food Improvement Agents, The National Institute for Occupational Safety and Health (NIOSH))
Identification
| Property | Value |
|---|---|
| SKU | 16359242 |
| CAS Number | 7722-88-5 |
| IUPAC Name | tetrasodium;phosphonato phosphate |
| EC Number | 231-767-1 |
| Molecular Formula | Na4O7P2 |
| Molecular Weight | 265.90 |
| Exact Mass | 265.871 |
| SMILES | [O-]P(=O)([O-])OP(=O)([O-])[O-].[Na+].[Na+].[Na+].[Na+] |
| InChIKey | FQENQNTWSFEDLI-UHFFFAOYSA-J |
| InChI | InChI=1S/4Na.H4O7P2/c;;;;1-8(2,3)7-9(4,5)6/h;;;;(H2,1,2,3)(H2,4,5,6)/q4*+1;/p-4 |
| PubChem CID | 24403 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2835395000 |
| Tariff Code | 2835390000 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H318 Causes serious eye damage
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
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
- Diphosphoric acid, tetrasodium salt
- Natrium pyrophosphat
- Phosphotex
- Sodium diphosphate
- Sodium diphosphate, anhydrous
- Sodium pyrophosphate
- Tetrasodium diphosphate
- TETRASODIUM PYROPHOSPHATE
- TSPP
- Victor TSPP
Frequently asked questions
What is sodium pyrophosphate anhydrous used for?
It is commonly used as a water softener, detergent builder, and in food processing as a pH regulator and sequestrant.
What is the chemical formula and molecular weight?
The formula is Na4O7P2 and the molecular weight is 265.90 g/mol.
How should sodium pyrophosphate anhydrous be stored?
Store at ambient temperature in a dry, well-ventilated area away from incompatible materials.
What grade is available?
Available in technical grade; specific grades may vary based on order volume and application.
Can Molekula supply it in bulk?
Yes, Molekula can supply sodium pyrophosphate anhydrous in bulk quantities upon request.
What documentation comes with the order?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) with the shipment.
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.