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Water solubility

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Description of key information

The water solubility at 20 °C was determined to be < 0.2 mg/L. 

Key value for chemical safety assessment

Water solubility:
0.2 mg/L

Additional information

"should read <0.2 mg/L"

Due to the chemical properties of the test item, which is expected to undergo hydrolysis in aqueous solutions, the water solubility was determined applying slight deviations from the guideline.

The water solubility was investigated using onetest item concentration of 10 g /l in demineralized water. Resulting concentrations were measured at different time points within a testing period of 5 days. Potential hydrolysis products of the test item were not taken into consideration.

After separation from undissolved particles by centrifugation and derivatization with methanol, the concentration of 4,4’-MDI as main component of the test item Desmodur PF in the aqueous test solutions was determined using a HPLC-MS method.