Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 224-226-6 | CAS number: 4253-90-1
- 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
Endpoint summary
Administrative data
Description of key information
Additional information
Polysulfides, di-tert-butyl is not readily biodegradable according to OECD 301 guideline criteria. It is expected to strongly sorb to soil and sediment particles based on Koc.
Determination of the hydrolysis rate for polysulfides, di-tert-butyl has been carried out. According to the pre-test performed at 50°C the test item is considered hydrolytically stable at pH 7 and 9. For pH 4 the outcome of the experiments gives no clear indication on the hydrolytic properties of the test item. No consistent decrease was observed. Furthermore a hydrolysis of the sulfide bond is unlikely. Thus the observed decrease in concentration is supposed not to be a consequence of a hydrolysis reaction..
In order to evaluate fish bioaccumulation potential for polysulfides, di-tert-butyl, a fish bioconcentration study according to the revised OECD TG 305 (dietary test) had been proposed in the original registration dossier. Further to the agreement in the final decision sent by ECHA this study has been performed. It shows a BMF = 0.0059 (in parallel, hexachlorobenzene, HCB, as a positive control showed a BMF of 0.7033, in line with expectation). For regulatory purpose, a BCF can be calculated using the linear regression equation issued by Inoue at al. (2011) linking BMF to BCF. The calculated BCF for polysulfides, di-tert-butyl, sets at 188 L/kg, one order of magnitude below the threshold for the "B" criterion. The substance is therefore not considered bioaccumulative in the framework of the PBT assessment.
Furthermore, a QSAR analysis was performed with EAWAG and EPISUITE to assess the PBT/vPvB properties of the susbtance and these degradation products and is available in section 5.2.1. Based on these results, the parent substance and its biotic degradation products are unlikely to fulfill PBT or vPvB criteria.
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.