Registration Dossier
Registration Dossier
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EC number: 246-148-1 | CAS number: 24308-84-7
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
According to Annex XIII of the REACH Regulation (1907/2006), a substance is PBT if it fulfils all three of the following criteria.
1) Persistence
A substance fulfils the persistence criterion (P) when:
– the half-life in marine water is higher than 60 days, or
– the half-life in fresh- or estuarine water is higher than 40 days, or
– the half-life in marine sediment is higher than 180 days, or
– the half-life in fresh or estuarine water sediment is higher than 120 days, or
– the half-life in soil is higher than 120 days.
The assessment of the persistency in the environment shall be based on available half-life data collected under the adequate conditions, which shall be described by the registrant.
2) Bioaccumulation
A substance fulfills the bioaccumulation criterion (B) when:
– the bioconcentration factor (BCF) is higher than 2 000.
The assessment of bioaccumulation shall be based on measured data on bioconcentration in aquatic species. Data from freshwater as well as marine water species can be used.
3) Toxicity
A substance fulfils the toxicity criterion (T) when:
– the long-term no-observed effect concentration (NOEC) for marine or freshwater organisms is less than 0.01 mg/l, or
– the substance is classified as carcinogenic (category 1 or 2), mutagenic (category 1 or 2), or toxic for reproduction (category 1, 2, or 3), or
– there is other evidence of chronic toxicity, as identified by the classifications.
The substance fails to fulfil the bioaccumulation criterion. Based on a partition coefficient of log Pow = -0.39 at 20 °C, a potential for bioaccumulation may be excluded. Indeed, threshold value of potential for bioconcentration is log Pow = 4 as indicated in the CLP Regulation (EC 1272/2008).
Moreover, the substance resulted as readily biodegradable in water in a screening test, thus no persistence is expected.
Therefore, the substance is not PBT.
According to Annex XIII of the REACH Regulation (1907/2006), a substance is vPvB if it fulfils the following criteria.
1)Persistence
A substance fulfils the very persistence criterion (vP) when:
- the half-life in marine, fresh- or estuarine water is higher than 60 days, or
- the half-life in marine, fresh or estuarine water sediment is higher than 180 days, or
- the half-life in soil is higher than 180.
2)Bioaccumulation
A substance fulfils the very persistence criterion (vP) when:
- the bioconcentration factor is greater than 5000.
Based on a partition coefficient of log Pow = -0.39 at 20 °C and on ready biodegradation observed in a screening test in water, a potential for bioaccumulation or persistence may be excluded. Therefore, the substance is not vPvB.
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.
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