Registration Dossier
Registration Dossier
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EC number: 407-950-9 | CAS number: 895-85-2 INTEROX-PMBP-70W; INTEROX-PMPB-70W
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- bis(4-methylbenzoyl) peroxide
- Type of composition:
- boundary composition of the substance
- State / form:
- solid: particulate/powder
- Reference substance:
- bis(4-methylbenzoyl) peroxide
- Name:
- bis(4-methylbenzoyl) peroxide
- Type of composition:
- legal entity composition of the substance
- State / form:
- solid: particulate/powder
- Reference substance:
- bis(4-methylbenzoyl) peroxide
- PBT status:
- the substance is not PBT / vPvB
- Justification:
In a ready biodegradability test is shown that the substance is readily biodegradable and therefore not P or vP.
The substance itself has a log Kow of 4.7, but due to fast hydrolysis p-toluic acid the main degradation product should be evaluated which has a log Kow of 2.44. The substance should therefore not be classified as B or vB.
The lowest EC50 for p-toluic acid is 42 mg/L for invertebrates. The long-term study for invertebrates gave a NOEC of 3.2 mg/L. Both values are above the limits set and p-toluic acid as well as bis(4-methylbenzoyl) peroxide should not be classified T.
The substance does not fulfil any of the screening criteria for either PBT or vPvB and is therefore not classified as such.
Referenceopen allclose all
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