Molekula
Sodium phosphate monobasic 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 phosphate monobasic anhydrous (NaH₂PO₄) is a white, crystalline inorganic salt primarily used as a buffering agent, pH regulator, and nutrient source 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 7558-80-7, a molecular weight of 119.98 g/mol, and is stable under ambient storage conditions. It carries no signal word under standard classification. Molekula supplies sodium phosphate monobasic 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.
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.
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1 kg — $70.90 per pack
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Specifications
| Property | Value |
|---|---|
| Appearance | White to off white crystalline powder |
| Heavy metals | ≤ 10.0mg/kg |
| pH | 4.1 - 4.7 (10g/l aq.) |
| Loss on Drying | ≤ 2.0% |
| Assay | 98.0 - 103.0% |
| Water insoluble matter | ≤ 0.2% |
| Lead (Pb) | ≤ 4.0mg/kg |
| Arsenic (As) | ≤ 3.0mg/kg |
| Fluoride (F-) | ≤ 30mg/kg |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
For research use only. Not for human use.
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless, monoclinic crystals |
| Odour | Odorless |
| Melting Point | 200 °C (decomposes) |
| Solubility (other solvents) | Freely soluble in water. Insoluble in ethanol or ether |
Source: PubChem CID 23672064 (HSDB, EU Food Improvement Agents)
Identification
| Property | Value |
|---|---|
| SKU | 48590044 |
| CAS Number | 7558-80-7 |
| IUPAC Name | sodium dihydrogen phosphate |
| EC Number | 231-449-2 |
| Molecular Formula | NaH2PO4 |
| Molecular Weight | 119.98 |
| Exact Mass | 119.9588 |
| SMILES | OP(=O)(O)[O-].[Na+] |
| InChIKey | AJPJDKMHJJGVTQ-UHFFFAOYSA-M |
| InChI | InChI=1S/Na.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1 |
| PubChem CID | 23672064 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2835.22.00.00 |
| Tariff Code | 2835293000 |
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, 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
- Acid sodium phosphate
- Monobasic sodium phosphate
- Monosodium dihydrogen orthophosphate
- Monosodium monophosphate
- Monosodium phosphate
- Monosodium phosphate, anhydrous
- Sodium acid phosphate
- SODIUM DIHYDROGEN PHOSPHATE
- Sodium phosphate, monobasic
- Sodium primary phosphate
Frequently asked questions
What is sodium phosphate monobasic anhydrous commonly used for?
It is primarily used as a buffering agent in pharmaceuticals, food preservation (e.g., acidulant/leavening agent), and laboratory applications like pH adjustment in biological buffers.
What is the chemical formula and molecular weight of sodium phosphate monobasic anhydrous?
The formula is **NaH₂PO₄** with a molecular weight of **119.98 g/mol**.
How should sodium phosphate monobasic anhydrous be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture and strong oxidizing agents.
What grades of sodium phosphate monobasic anhydrous does Molekula supply?
We supply **ACS reagent grade** and **technical grade**—contact us for specifications or custom requirements.
Can Molekula supply sodium phosphate monobasic anhydrous in bulk?
Yes, we offer bulk quantities (minimum order varies by grade); please inquire for pricing and lead times.
What documentation comes with an order of sodium phosphate monobasic anhydrous?
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.