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Physical & Chemical properties

Water solubility

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Reference
Endpoint:
water solubility
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is hydrolytically unstable at pH 4, 7 and 9 (half-life less than 12 hours)

Description of key information

The endpoint is waived: See 5.1.2 Hydrolysis. Diisobutyryl peroxide is hydrolytically unstable at all tested pH values.( half time less than 12 hours)

Key value for chemical safety assessment

Additional information

At a pH value of 4the half-life (t½) for diisobutyryl peroxide at a temperature of 15°C was calculated to be 63 minutes.  

At a pH value of 7 the half-life (t½) for diisobutyryl peroxide at a temperature of 15°C was calculated to be 57 minutes.  

At a pH value of 9 the half-life (t½) fordiisobutyryl peroxide at a temperature of 15°C was calculated to be 29 minutes.

See ECHA chapter R. 7A R7.1.7.1 Endpoint specific guidance p 84. The study does not need to be conducted if the substance is hydrolytically unstable at pH 4, 7 and 9 (half-life less than 12 hours)