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Physical & Chemical properties

Water solubility

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Description of key information

The water solubility of the substance at 25 °C was estimated to be 0.95 g/mL < water solubility < 1.00 g/mL by using visual observation (in accordance with EC A.6 and OECD 105 guidelines). The pH range of the water fraction after the test was between 3.56 and 4.32. The water solubility of the guanidine part of the salt is 0.31 g/mL < water solubility < 0.33 g/mL, at 25 °C.

Key value for chemical safety assessment

Water solubility:
310 g/L
at the temperature of:
25 °C

Additional information

Key value for CSA: 0.31 g/mL < water solubility < 0.33 g/mL at 25 °C, corresponding to the guanidine part (32.7 wt.%) of the guanidinium phosphate (1:1) salt.

For guanidinium phosphate (1:1) salt the water solubility can be expressed as: 0.95 g/mL < water solubility < 1.00 g/mL, at 25 °C.