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Description of key information

Half lives are:
pH 4: 1025 days
pH 7: >1 year
pH 9: 56 days

Key value for chemical safety assessment

Half-life for hydrolysis:
56 d
at the temperature of:
25 °C

Additional information

Two studies are available, both performed to EU method C7:

1) An extended study (Sydney, 1999) is key study, showing half-life at pH 4 of 1025 days (2.8 years) and at pH 9 of 56 days.

2) A preliminary study (Huntingdon Life Sciences, 1997) is a supporting study, showing a half-life at pH 7 of greater than one year.

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