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Dipotassium oxalate anhydrate (CAS 583-52-8) is considered readily biodegradable based on read across data from the analogues substance oxalic acid (CAS 144-62-7). Considering the water solubility of 392 g/L (at 20 °C) and the low log Kow of < -5.2 (at 20 °C), the main compartment for environmental distribution is expected to be the water column. Evaporation into air and the transport through the atmospheric compartment is considered negligible based on the vapour pressure of < 1.0E-05 Pa (at 20 °C).