Molekula
Sodium phosphate monobasic monohydrate
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 is an inorganic salt of sodium, hydrogen, and phosphate, commonly used as a buffering agent, pH regulator, and nutrient in pharmaceuticals, food processing, and laboratory applications. It also functions as a chelating agent and water softener in industrial processes. This chemical has a CAS number of 10049-21-5, with the molecular formula NaH₂PO₄·H₂O and a molecular weight of 137.99 g/mol. It is stable at ambient storage conditions and carries no signal word for hazard classification. Molekula supplies sodium phosphate monobasic monohydrate 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.
Often bought together
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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500 g — $34.20 per pack
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1 kg — $58.70 per pack
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 particles |
| Heavy metals | ≤ 0.001% |
| pH | 4.0 - 5.0 |
| Loss on Drying | 10.0 - 15.0 % |
| Chloride (Cl-) | ≤ 0.005% |
| Assay | 98.0 - 103.0 % |
| Water insoluble matter | ≤ 0.2% |
| Lead (Pb) | ≤ 0.001% |
| Identification (IR) | Conforms to Reference |
| Arsenic (As) | ≤ 0.0003% |
| Fluoride (F-) | ≤ 0.003% |
| Conforms to FCC | Conforms |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 46304862 |
| 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
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
- MONOBASIC SODIUM PHOSPHATE MONOHYDRATE
- Monosodium phosphate monohydrate
- OSMOPREP COMPONENT SODIUM PHOSPHATE, MONOBASIC, MONOHYDRATE
- Phosphoric acid, monosodium salt, monohydrate
- Sodium dihydrogen phosphate monohydrate
- sodium dihydrogen phosphate--water (1/1)
- Sodium phosphate monohydrate
- SODIUM PHOSPHATE, MONOBASIC, MONOHYDRATE (II)
- SODIUM PHOSPHATE, MONOBASIC, MONOHYDRATE COMPONENT OF VISICOL
- VISICOL COMPONENT SODIUM PHOSPHATE, MONOBASIC, MONOHYDRATE
Frequently asked questions
What is sodium phosphate monobasic monohydrate commonly used for?
It is widely used as a buffering agent in pharmaceuticals, food processing (e.g., emulsifier/stabilizer), and laboratory applications like pH adjustment in biological buffers.
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 incompatible substances.
What grades of sodium phosphate monobasic monohydrate does Molekula offer?
Molekula supplies **ACS reagent grade** and **technical grade** for industrial and laboratory use.
Can Molekula supply sodium phosphate monobasic monohydrate in bulk quantities?
Yes, we offer bulk packaging options (e.g., 25 kg drums, 1 MT bags) for large-scale applications—please inquire for specific quantities.
What documentation is provided 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.
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.