Potassium phosphate tribasic
SIGMA/RDD019 - anhydrous, free-flowing, Redi-Dri™, reagent grade, ≥97%
Synonym: Tripotassium phosphate
CAS Number: 7778-53-2
Empirical Formula (Hill Notation): K3O4P
Molecular Weight: 212.27
EC Number: 231-907-1
MDL Number: MFCD00036295
Linear Formula: K3PO4
Product Type: Chemical
| assay | ≥97% |
| density | 2.564 g/mL at 25 °C (lit.) |
| form | crystalline |
| grade | anhydrous |
| reagent grade | |
| InChI | 1S/3K.H3O4P/c;;;1-5(2,3)4 |
| InChI key | LWIHDJKSTIGBAC-UHFFFAOYSA |
| loss | ≤5.0% loss on ignition |
| pH | 11.9 (25 °C, 10 g/L) |
| product line | Redi-Dri™ |
| quality | free-flowing |
| Quality Level | 100 ![]() |
| SMILES string | [K].OP(O)(O)=O |
| solubility | water: 100 mg/mL, clear, colorless |
| Legal Information: | Redi-Dri is a trademark of Sigma-Aldrich Co. LLC |
| Packaging: | 1 kg in poly bottle |
| Packaging: | 2.5 kg in poly drum |
| Packaging: | 500 g in poly bottle |
| Symbol | ![]() GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H318 - H335 |
| Precautionary statements | P261 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338 - P403 + P233 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥97% |
| Density | 2.564 g/mL at 25 °C (lit.) |
| UNSPSC | 12161700 |



