Molekula
Potassium dihydrogen phosphate (Monobasic) ACS Grade
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
Potassium dihydrogen phosphate (monobasic) ACS Grade is a high-purity inorganic salt widely used as a buffering agent, pH regulator, and nutrient in biological and chemical research, fermentation processes, and analytical laboratories. It meets ACS specifications for purity and reliability in precise applications. CAS 7778-77-0, molecular formula KH2PO4, molecular weight 136.08 g/mol. Store at ambient conditions. Signal word: Danger (H302: harmful if swallowed; H331: toxic if inhaled). Molekula supplies Potassium dihydrogen phosphate (monobasic) ACS Grade 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 powder, hygroscopic |
| Grade | Conforms to ACS grade |
| Loss on Drying | <1% (4hrs, 105°C) |
| Assay | Min 99% m/m |
| P2O5 | ≥ 51.2% |
| Water insoluble matter | ≤ 0.2% |
| K2O | ≥ 33.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White tetragonal crystals |
| Odour | Odorless |
| Melting Point | 253 °C |
| Density | 2.34 g/cm³ |
| Solubility (other solvents) | Soluble in about 4.5 parts water; insoluble in alcohol |
| Refractive Index | 1.5093 |
Source: PubChem CID 516951 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90029910 |
| CAS Number | 7778-77-0 |
| IUPAC Name | potassium dihydrogen phosphate |
| EC Number | 231-913-4 |
| Molecular Formula | KH2PO4 |
| Molecular Weight | 136.08 |
| Exact Mass | 135.9328 |
| SMILES | OP(=O)(O)[O-].[K+] |
| InChIKey | GNSKLFRGEWLPPA-UHFFFAOYSA-M |
| InChI | InChI=1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1 |
| PubChem CID | 516951 |
| UN Number | UN3288 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2835.24.0000 |
| Tariff Code | 2835240000 |
Safety & GHS
-
Toxic
GHS06
Hazard statements
- H302 Harmful if swallowed
- H331 Toxic if inhaled
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P271 Use only outdoors or in a well-ventilated area
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P284 Wear respiratory protection
- P301+330 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
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
No alternate names recorded for this product.
Frequently asked questions
What is potassium dihydrogen phosphate (monobasic) ACS Grade primarily used for?
It is commonly used as a buffer in biochemical research, a nutrient in cell culture media, and in analytical chemistry for pH adjustment and titrations.
What is the chemical formula and molecular weight of potassium dihydrogen phosphate (monobasic) ACS Grade?
The chemical formula is KH₂PO₄ with a molecular weight of 136.08 g/mol.
How should potassium dihydrogen phosphate (monobasic) ACS Grade be stored?
Store in a tightly sealed container at ambient temperature in a dry, well-ventilated area.
What grade of potassium dihydrogen phosphate (monobasic) does Molekula supply, and is ACS Grade available?
Molekula supplies ACS Grade potassium dihydrogen phosphate (monobasic), meeting high-purity standards for laboratory applications.
Can Molekula supply potassium dihydrogen phosphate (monobasic) ACS Grade in bulk quantities?
Yes, Molekula can provide bulk quantities of potassium dihydrogen phosphate (monobasic) ACS Grade upon request.
What documentation comes with an order of potassium dihydrogen phosphate (monobasic) ACS Grade?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet confirming ACS Grade 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.