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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
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EC number: 202-239-8 | CAS number: 93-34-5
- 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:
- 5-chloro-2-methoxybenzenediazonium chloride
- Type of composition:
- legal entity composition of the substance
- State / form:
- solid: particulate/powder
- Reference substance:
- 5-chloro-2-methoxybenzenediazonium chloride
- PBT status:
- the substance is not PBT / vPvB
- Justification:
The test substance is deemed not PBT or vPvB. This conclusion was drawn based on the screening criteria for P, B and T. Screening criteria were used due to lack of other data, as the registration regards the tonnage band 10 -100 tpa.
Persistency (P) assessment
Since the substance could not be isolated for testing (explosion hazard), biodegradability of the test substance was not determined experimentally. Instead, QSAR results obtained with BioWin v.4.10 (available in EpiSuite) were used as screening information. Taken together the 7 BioWin predictions, the prediction is that the substance is not readily biodegradable.
Based onTable R.11 -4 in the ECHA guidance R. v. 3.0 (2017) following screening information is collected:
- Biowin 2: Biodegrades fast
- Biowin 3: Ultimate degradation timeframe is weeks - months (value = 2.48, hence > cut-off 2.25)
- Biowin 6: Not readily biodegradable (value = 0.1604)
Based on the available data, no conclusion on the persistency criteria can be drawn.
Bioaccumulation assessment (B and vB)
Since the substance could not be isolated for testing (explosion hazard), partition coefficient of the test substance was not determined experimentally. An estimate for the partition coefficient was obtained using KOWWIN v.1.68 (available in EpiSuite). The estimated log Kow = 3.08. This is below the screening criteria for log Kow being 4.5.
Additionally, an estimate for BCF was obtained using BCFBAF v.3.01 (available in EpiSuite). The estimate for BCF is 50.14 L/kg. This value is far below the B criterion of 2000 L/kg.
Taken together the information on log Kow and BCF, the diazonium salt is regarded as not B.
Toxicity assessment (T)
Simillarly, since the substance could not be isolated for testing (explosion hazard), no toxicological nor ecotoxicological data were generated. The toxicity assessment could hence not be performed.
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.
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.