Molekula
Sodium phosphite dibasic pentahydrate
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 phosphite dibasic pentahydrate is a water-soluble inorganic salt primarily used as a reducing agent and corrosion inhibitor in industrial processes and water treatment. It also serves as the substrate for phosphite dehydrogenase in enzymatic NAD(P)H cofactor regeneration systems. This chemical has a CAS number of 13517-23-2, a molecular formula of Na2HPO3·5H2O, and a molecular weight of 216.03 g/mol. It is stored at ambient conditions and carries no signal word under standard hazard classifications. Molekula supplies Sodium phosphite dibasic pentahydrate 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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1 kg — £60.60 per pack ex VAT · £72.72 inc. VAT
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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.
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Specifications
| Property | Value |
|---|---|
| Appearance | White solid |
| Heavy metals | ≤ 0.01% |
| Identification | Conforms to reference |
| pH | 9.0 - 10.0 |
| Chloride (Cl-) | ≤ 0.01% |
| Assay | ≥ 98.0% |
| Na2O | ≥ 28.0% |
| Sulphates (SO4)(2-) | ≤ 0.1% |
| Phosphorous (P) | ≤ 0.01% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90023421 |
| CAS Number | 13517-23-2 |
| Molecular Formula | Na2HPO3 · 5H2O |
| Molecular Weight | 216.03 |
| SMILES | O.O.O.O.O.[O-][P+](=O)[O-].[Na+].[Na+] |
| REACH Code | Y113 |
| HTS Code | 2835220000 |
| Tariff Code | 2835100090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Russian, 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
No alternate names recorded for this product.
Frequently asked questions
What is sodium phosphite dibasic pentahydrate commonly used for?
It is primarily used as a reducing agent, corrosion inhibitor, and in water treatment. It also finds applications as a stabilizer in some industrial processes and as the substrate for phosphite dehydrogenase in enzymatic NAD(P)H cofactor regeneration.
What is the chemical formula and molecular weight of sodium phosphite dibasic pentahydrate?
The chemical formula is Na₂HPO₃·5H₂O, and the molecular weight is 216.03 g/mol.
How should sodium phosphite dibasic pentahydrate be stored?
Store in a cool, dry place at ambient temperature, away from moisture and incompatible substances. Ensure containers are tightly sealed.
What grades or purities of sodium phosphite dibasic pentahydrate does Molekula supply?
Molekula supplies technical-grade sodium phosphite dibasic pentahydrate; purity specifications are available upon request.
Can Molekula supply sodium phosphite dibasic pentahydrate in bulk quantities?
Yes, we offer bulk packaging options—contact our sales team for specific quantities and logistics details.
What documentation comes with an order of sodium phosphite dibasic pentahydrate?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a packing list. Additional documentation, such as a technical data sheet, is available 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.