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Diss Factsheets
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EC number: 223-356-0 | CAS number: 3851-87-4
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- bis(3,5,5-trimethylhexanoyl) peroxide
- Type of composition:
- boundary composition of the substance
- State / form:
- liquid
- Reference substance:
- bis(3,5,5-trimethylhexanoyl) peroxide
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Bis(3,5,5-trimethylhexanoyl) peroxide undergoes immediate hydrolytical degradation in contact with water. Any possibility for exposure of aquatic organisms to bis(3,5,5-trimethylhexanoyl) peroxide can therefore be excluded. Since it can be legitimately expected that bis(3,5,5-trimethylhexanoyl) peroxide will not be present in the environment, PBT properties have therefore been evaluated for the identified hydrolysis products.
Two hydrolysis products were identifiable:
- 3,5,5-trimethylhexanoic acid (CAS no. 3302-10-1)
- 2,4,4-trimethylpentan-1-ol (CAS no. 16325-63-6)
An additional five degradation products were detected in the hydrolysis study, but proved to be non-identifiable. Nevertheless, considering the molecular structure of the parent substance it may be assumed that also the unidentified breakdown products are smaller molecules than the parent, and more hydrophilic.
Bis(3,5,5-trimethylhexanoyl) peroxide has further been demonstrated to be readily biodegradable. Any degradation products formed during hydrolysis (those identified above, but also any unidentifiable compounds) are considered to be themselves sufficiently rapidly degraded as not to require further assessment. Therefore, it can be concluded that bis(3,5,5-trimethylhexanoyl) peroxide including its hydrolytical degradation products is not persistent (not P, not vP).
Any other degradation products that may be formed during hydrolysis do not require specific assessment, since they are themselves rapidly degraded.
Bis(3,5,5-trimethylhexanoyl) peroxide, as assessed by the properties of its degradation products, does not have PBT properties. The parent substance will not be present in the environment due to the rapid hydrolysis; hence it is more appropriate to consider the hydrolysis products in the PBT assessment instead of the parent substance. For details please refer to the individual records in this section.
Reference
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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