Molekula
Di-Potassium hydrogen orthophosphate
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-Potassium hydrogen orthophosphate (K₂HPO₄) is a water-soluble potassium phosphate salt widely used as a buffering agent, nutrient supplement in fertilizers, and pH adjuster in food, pharmaceuticals, and laboratory applications. It functions as a source of potassium and phosphate ions, supporting microbial growth, enzymatic stability, and buffering capacity in solutions. This chemical has a CAS number of 7758-11-4, a molecular weight of 174.18 g/mol, and is stored safely at ambient conditions. It carries a **Danger** signal word due to its potential hazards, requiring careful handling. Molekula supplies Di-Potassium hydrogen orthophosphate 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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 solid |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White crystals |
| Solubility (other solvents) | Freely soluble in water. Insoluble in ethanol |
Source: PubChem CID 24450 (HSDB, EU Food Improvement Agents)
Identification
| Property | Value |
|---|---|
| SKU | 90029387 |
| CAS Number | 7758-11-4 |
| IUPAC Name | dipotassium;hydrogen phosphate |
| EC Number | 231-834-5 |
| Molecular Formula | K2HPO4 |
| Molecular Weight | 174.18 |
| Exact Mass | 173.8887 |
| SMILES | OP(=O)([O-])[O-].[K+].[K+] |
| InChIKey | ZPWVASYFFYYZEW-UHFFFAOYSA-L |
| InChI | InChI=1S/2K.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2 |
| PubChem CID | 24450 |
| UN Number | UN3288 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2835.24.0000 |
| Tariff Code | 2835240000 |
Safety & GHS
-
Toxic
GHS06
-
Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H331 Toxic if inhaled
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P284 Wear respiratory protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+312 IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
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
- Dibasic potassium phosphate
- Dipotassium hydrogen phosphate
- Dipotassium monohydrogen phosphate
- Dipotassium monophosphate
- Dipotassium orthophosphate
- DIPOTASSIUM PHOSPHATE
- Phosphoric acid, dipotassium salt
- Potassium dibasic phosphate
- Potassium monophosphate
- Potassium phosphate dibasic
Frequently asked questions
What is di-potassium hydrogen orthophosphate (K₂HPO₄) commonly used for?
It is primarily used as a buffering agent in pharmaceuticals, a nutrient in fertilizers, and in food processing as an emulsifier (E340ii) or pH adjuster.
What is the molecular formula and molecular weight of di-potassium hydrogen orthophosphate?
The molecular formula is **K₂HPO₄**, and the molecular weight is **174.18 g/mol**.
How should di-potassium hydrogen orthophosphate be stored?
Store in a cool, dry place at **ambient temperature**, away from incompatible substances, and ensure containers are tightly sealed.
What grades of di-potassium hydrogen orthophosphate does Molekula supply?
Molekula supplies **analytical reagent (AR) grade** and **industrial grade** di-potassium hydrogen orthophosphate, depending on application requirements.
Can Molekula supply di-potassium hydrogen orthophosphate in bulk quantities?
Yes, we offer bulk packaging options (e.g., 25kg drums, 1MT big bags) for large-scale industrial or commercial applications—please inquire for availability.
What documentation comes with an order of di-potassium hydrogen orthophosphate?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability and compliance.
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.