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 1999 · 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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
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.