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Water solubility

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Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2002
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
GLP compliance:
yes (incl. QA statement)
Remarks:
Fraunhofer IME
Type of method:
flask method
Key result
Water solubility:
223 g/L
Conc. based on:
other: Magnesium-monoperphthalate
Temp.:
20 °C
Remarks on result:
other: The value is a theoretical concentration because of degradation of the test substance
Key result
Water solubility:
291 g/L
Conc. based on:
other: Magnesium-monoperphthalate hexahydrate
Temp.:
20 °C
Remarks on result:
other: The value is a theoretical concentration because of degradation of the test substance

It was not possible to determine the water solubility of MMPP because the test substance is not stable in aqueous solution. In short times no MMPP was detectable and complete degradation to phthalic acid occurred. Therefore, the analytical determination was based on phthalic acid.

Conclusions:
The water solubility of MMPP was determined according to OECD 105. Due to the rapid degradation of the test substance the analytical determination was based on the degradation product phthalic acid. The theoretical water solubility of MMPP was determined to 223 g/L at 20°C, calculated from the measured phthalic acid concentrations.

Description of key information

The water solubility of MMPP was determined according to OECD 105. Due to the rapid degradation of the test substance the analytical determination was based on the degradation product phthalic acid. The theoretical water solubility of MMPP was determined to 223 g/L at 20°C, calculated from the measured phthalic acid concentrations.

Key value for chemical safety assessment

Water solubility:
291 g/L
at the temperature of:
20 °C

Additional information

The value should be used with care, as the substance is not stable in aqueous solution.

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