PRODUCT Properties
| Melting point: | >300°C |
| Density | 2.088 [HAW93] |
| vapor pressure | 0.002Pa at 20℃ |
| storage temp. | Room Temperature |
| solubility | DMSO |
| form | Solid |
| pka | 4.27[at 20 ℃] |
| color | Monoclinic, colorless crystals |
| Water Solubility | soluble 40 parts cold H2O, 6 parts boiling H2O [MER06] |
| Stability: | Stable. |
| LogP | -4.961 |
Description and Uses
Potassium hydrogen oxalate, also known as potassium bioxalate, is a salt with formula KHC2O4 or K+·HO2C-CO2-. It is one of the most common salts of the hydrogenoxalate anion, and can be obtained by reacting potassium hydroxide with oxalic acid in 1:1 mole ratio.
The salt is also known as potassium hydrogen oxalate , acid potassium oxalate, or monobasic potassium oxalate. In older literature, it was also called sorrel salt, sal acetosella ,
Potassium hydrogen oxalate occurs in some plants, notably sorrel. It is a commercial product, used in photography, marble grinding, and to remove ink stains.
Removing ink stains, scouring metals, cleaning wood, photography, laboratory reagent, mordant.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319 |
| Precautionary statements | P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313 |
| RIDADR | 2811 |
| HazardClass | 6.1(b) |
| PackingGroup | III |
| Toxicity | TDLo orl-wmn: 100 mg/kg:CNS,CVS,KID MMWOAU 79,1481,32 |
