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EC number: 203-733-6
CAS number: 110-05-4
3 and Chronic 3
existing acute data are as follows:
h EC50 algae = 36 mg/L; 48 h EC50 Daphnia = 73.1 mg/L, 96 hr Acute fish
= 171 mg/L (algae used as worst case).
all effect values are above 1 mg/L,there is no acute classification
for this substance.
EC50 value is between 10 and 100 mg/L, Acute 3 is applicable in this
butyl peroxide is not readily biodegradable, and the measured log
Kow is 3.2. The chronic data available are as follows:
h ErC10 algae, 15 mg/L; 21 d NOEC Daphnia = 7.2 mg/L.
chronic data for less than 3 trophic levels are available the
classification is assessed using both the existing chronic and acute
data, and the most stringent outcome is chosen.
on acute data (72 h
EC50 algae = 36 mg/L): Chronic 3
on chronic data: (72 h ErC10 algae, 7.2 mg/L):
and GHS: Most
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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