Molekula
Sodium phosphate monobasic monohydrate ACS
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 phosphate monobasic monohydrate ACS is a high-purity sodium phosphate salt used primarily as a buffering agent, pH adjuster, and chelating agent in pharmaceuticals, food processing, and laboratory applications. It is also used in baking powders and boiler water treatment, and serves as an acidulant and sequestrant in foods. It ensures precise pH control in formulations and acts as a stabilizer in solutions. This reagent-grade chemical meets ACS specifications for purity and consistency, with a CAS number of 10049-21-5, molecular formula NaH₂PO₄·H₂O, and a molecular weight of 137.99 g/mol. It is non-hazardous (no signal word) and stores safely at ambient conditions. Molekula supplies Sodium phosphate monobasic monohydrate ACS 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.
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500 g — £33.00 per pack ex VAT · £39.60 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | White particles |
| Heavy metals | ≤10mg/kg |
| pH | 4 - 4.5 |
| Chloride (Cl-) | ≤5mg/kg |
| Assay | 98 - 102% |
| Insoluble Matter | ≤0.01% |
| Iron (Fe) | ≤10mg/kg |
| Calcium (Ca) | ≤50mg/kg |
| Potassium (K) | ≤100mg/kg |
| Sulphates (SO4)(2-) | ≤30mg/kg |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90029394 |
| CAS Number | 10049-21-5 |
| IUPAC Name | sodium;dihydrogen phosphate;hydrate |
| Molecular Formula | NaH2PO4 · H2O |
| Molecular Weight | 137.99 |
| Exact Mass | 137.9694 |
| SMILES | O.OP(=O)(O)[O-].[Na+] |
| InChIKey | BBMHARZCALWXSL-UHFFFAOYSA-M |
| InChI | InChI=1S/Na.H3O4P.H2O/c;1-5(2,3)4;/h;(H3,1,2,3,4);1H2/q+1;;/p-1 |
| PubChem CID | 516949 |
| REACH Code | Y113 |
| HTS Code | 2835220000 |
| Tariff Code | 2835220000 |
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
No alternate names recorded for this product.
Frequently asked questions
What is sodium phosphate monobasic monohydrate ACS grade commonly used for?
This reagent is widely used in buffer solutions for pH control (e.g., in biological assays, molecular biology, and biochemistry), as a food additive (E339), and in cleaning agents due to its buffering and chelating properties.
What is the chemical formula and molecular weight of sodium phosphate monobasic monohydrate?
The formula is **NaH₂PO₄·H₂O**, and the molecular weight is **137.99 g/mol**.
How should sodium phosphate monobasic monohydrate be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture and strong oxidizing agents.
What grade of sodium phosphate monobasic monohydrate does Molekula supply?
Molekula supplies this product in **ACS grade**, meeting high purity standards for analytical and laboratory applications.
Can Molekula supply sodium phosphate monobasic monohydrate in bulk quantities?
Yes, Molekula can provide bulk quantities of sodium phosphate monobasic monohydrate upon request, with flexible packaging options.
What documentation comes with an order of sodium phosphate monobasic monohydrate?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
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