Registration Dossier
Registration Dossier
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EC number: 217-691-1 | CAS number: 1931-62-0
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- OO-tert-butyl monoperoxymaleate
- Type of composition:
- legal entity composition of the substance
- State / form:
- solid: particulate/powder
- Reference substance:
- OO-tert-butyl monoperoxymaleate
- Name:
- Boundary composition_OO-tert butyl monoperoxymaleate
- Type of composition:
- boundary composition of the substance
- State / form:
- solid: particulate/powder
- Reference substance:
- Boundary composition_OO-tert butyl monoperoxymaleate
- PBT status:
- the substance is not PBT / vPvB
- Justification:
OO-tert-butyl monoperoxymaleate is readily biodegradable hence not persistent, and has a partition coefficient (log Pow) of 1.99 hence lacks any bioaccumulation potential.
Pseudokircheneriella subcapitata were identified as most sensitive organism in the tests for aquatic toxicity with a 72-h ErC50 of 4.24 mg/L. In this test, the chronic effect level (ErC10, 72-h, growth rate) is 3.77 mg/L. Since the EC50 and EC10 are above 0.01 mg/L, the substance is not considered to fulfil the toxicity criterion T. Furthermore, the substance is neither classified as carcinogenic (category 1A or 1B), mutagenic (category 1A or 1B), or toxic for reproduction (category 1A or 1B, or 2), nor is there other evidence of chronic toxicity, as identified by the classifications "STOT RE 1, or STOT RE 2" according to CLP Regulation.
In conclusion, OO-tert-butyl monoperoxymaleate is readily biodegradable, not bioaccumulating, and does not fulfil any of the T-criteria. Therefore, the substance does not qualify for classification as PBT.
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