Molekula
di-Sodium hydrogen phosphate dihydrate
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
Di-sodium hydrogen phosphate dihydrate is a water-soluble inorganic salt used as a buffer, pH adjuster, and stabilizer in pharmaceuticals, food, and industrial applications. It appears as a white crystalline powder. CAS: 10028-24-7, molecular formula: HNa2O4P · 2H2O, molecular weight: 177.99 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies di-Sodium hydrogen phosphate dihydrate 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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1 kg — £57.60 per pack ex VAT · £69.12 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 crystalline |
| Heavy metals | ≤0.001% |
| Identification | Conforms to reference |
| Loss on Drying | 18.0% - 22.0% |
| Assay | ≥98.0% |
| Water insoluble matter | ≤0.2% |
| Lead (Pb) | ≤0.0002% |
| Arsenic (As) | ≤0.0003% |
| Fluoride (F-) | ≤0.005% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 10104750 |
| CAS Number | 10028-24-7 |
| IUPAC Name | disodium;hydrogen phosphate;dihydrate |
| Molecular Formula | HNa2O4P · 2H2O |
| Molecular Weight | 177.99 |
| Exact Mass | 177.9619 |
| SMILES | O.O.OP(=O)([O-])[O-].[Na+].[Na+] |
| InChIKey | KDQPSPMLNJTZAL-UHFFFAOYSA-L |
| InChI | InChI=1S/2Na.H3O4P.2H2O/c;;1-5(2,3)4;;/h;;(H3,1,2,3,4);2*1H2/q2*+1;;;/p-2 |
| PubChem CID | 6451167 |
| REACH Code | Y110 |
| HTS Code | 28352200 |
| Tariff Code | 2835220000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H319 Causes serious eye irritation
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P337+313 If eye irritation persists get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
- Disodium phosphate dihydrate
- DISODIUM PHOSPHATE DIHYDRATE (EP MONOGRAPH)
- Nat Phos 12X
- Nat Phos 3X
- Phosphoric acid, disodium salt, dihydrate
- sodium hydrogen orthophosphate dihydrate
- sodium hydrogen phosphate--water (1/2)
- sodium monohydrogen phosphate dihydrat
- Sodium phosphate dibasic dihydrate
- SODIUM PHOSPHATE, DIBASIC, DIHYDRATE (II)
Frequently asked questions
What is di-Sodium hydrogen phosphate dihydrate used for?
It is commonly used as a buffering agent in biochemical applications and as a stabilizer in food and pharmaceutical formulations.
What is the chemical formula and molecular weight?
The formula is HNa2O4P · 2H2O with a molecular weight of 177.99 g/mol.
How should it be stored?
Store at ambient temperature, protected from moisture and heat.
What grade is available?
Available in laboratory grade; specific grades may vary based on order volume.
Can Molekula supply it in bulk?
Yes, Molekula can supply di-Sodium hydrogen phosphate dihydrate in bulk quantities—please contact sales for details.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided 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.