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Diss Factsheets
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EC number: 249-854-8 | CAS number: 29797-40-8
- 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
Toxicity to terrestrial arthropods
Administrative data
- Endpoint:
- toxicity to terrestrial arthropods: long-term
- Data waiving:
- other justification
- Justification for data waiving:
- other:
- Justification for type of information:
- According to column 2 of REACH Annex IX, the equilibrium partitioning method can be applied to assess the hazard of soil organisms.
Based on REACH guidance document R7c, Table R7.11-2 (ECHA 2012), EPM can be applied if the substance is not highly adsorptive and/or not highly persistent in soil. Furthermore, the substance is not classified as very toxic Criteria according to Table R.7.11-2 Properties of Dichlormethylbenzene (mixture of isomers)
Highly adsorptive logKow > 5 logKow 4.2 - 4.3
Highly persistent DT50 in soil >180 d DT50 in soil ca. 90 - 120 d *
Very toxic to aquatic organisms EC/LC50 < 1 mg/L EC50 1.26 mg/L (lowest acute value) *
*The degradation in soil was determined in a non-guideline test under methanogenic conditions. The half life for the three main isomers 2,4-DCT, 2,5-DCT and 3,4-DCT was measured to about 90 days. The main isomers represent >80% of the whole isomeric mixture. The two minor isomers 2,3-DCT and 2,6-DCT are degraded slower, and no concrete half-life could be calculated. According to the graphs given in the publication a half-life of about 180 days for these 2 siomers can be estimated. The concentration of each of the 2 minor isomers is in the range up to 10%.
Taking all information into account a half-life for the whole substance of 90 to 120 days is estimated. Following REACH guidance document R7c, Table R7.11-2, performing of EPM is possible as long as the risk characterisation ratios are below 1. According to REACh Regulation (EC) No 1907/2006, Annex X, Column 2, tests on long-term toxicity to terrestrial organisms shall be proposed by the registrant if the results of the chemical safety assessment indicate the need to investigate further effects of the substance and/or relevant degradation products on terrestrial organisms. This is however not the case: The outcome of the CSA showed that all risk characterisation ratios in soil are below 1. For this reason, the performance of a test on the toxicity of dichloromethylbenzene for the terrestrial organisms is not needed.
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
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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