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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 930-936-3 | CAS number: -
- 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
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
This information will be submitted later based on ECHA communication number CCH-D-2114483442-48-01/D.
Key value for chemical safety assessment
Additional information
Data directly evaluating the long-term adverse effects of mono-, and di-(sec-hexadecyl)naphthalene to the freshwater invertebrate, Daphnia magna, are not available. However, there are data for a structurally related alkylnaphthalene, MCP 2395 (i.e, C20 -alkylated naphthalene analog) for read-across assessment. Justification for read-across stems from the fact that MCP 2395 (naphthalene, 1-methylnonadecyl) is a related C20 alkylnaphthalene structural analog of the study substance (mono-, and di-(sec-hexadecyl)naphthalene) and because of their close structural similarities (C16- versus C20- alkyl group) and expected similar properties. Physical-chemical properties like water solubility are expected to be very low for both these two long-chain alkylated naphthalene substances. Read-across effects on Daphnia magna are expected to be similar owing to the expected very low water-solubility and bioavailability for these related alkylated naphthalene materials (four carbon difference between the two materials).
The chronic toxicity of MCP 2395 as measured by the reproductive capacity of the water flea , Daphnia magna, was evaluated in freshwater. Relative to controls, the test material did not cause adverse effects to the survival/immobilization and reproduction of Daphnia magna under the WAF conditions of the 21-day test and such effects are not expected at its maximum water solubility. The 21-day LL50 (survival/immobilization) and the 21-day EL50 (reproduction) was estimated to be greater than 103 mg/L (limit test). The 21-day NOEL loading for reproduction was greater than 103 mg/L WAF.
Hence, based on the read-across data for the structurally related alkylated naphthalene surrogate, the study substance, namely, mono-, and di-(sec-hexadecyl)naphthalene, is not expected to cause chronic toxicity to invertebrates at its maximum water solubility limits (if tested under WAF conditions).
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.