Registration Dossier
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EC number: 204-340-2 | CAS number: 119-64-2
- 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
- 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

Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The acute toxicity of the test item to Daphnia magna was determined in a static test (Scholz, 1994) conducted according to accepted guidelines (Directive 92/69/ECC, C.2). The EC50 (48h) calculated was 9.5 mg/L (based on nominal concentrations).
The acute toxicity of Tetrahydronaphthalene was also studied on Daphnia pulex in a static test (Smith et al., 1988) according to U.S. national guidelines. The EC50 (48h) was estimated to be 2.412 mg/L.
The acute effects of Tetrahydroanphthalene were also studied on the marine Brine shrimp (Price et al., 1974) in a 24 h static study. The results of such study indicates that the EC50 (24 h) was 78 mg/L.
Key value for chemical safety assessment
- EC50/LC50 for freshwater invertebrates:
- 2.4 mg/L
- EC50/LC50 for marine water invertebrates:
- 78 mg/L
Additional information
There are two studies with freshwater invertebrates available. Daphnia pulex was observed to be more susceptible to tetrahydronaphthalene than Daphnia magna and willl be therefore considered for risk assessment purposes. There is also one study with marine water invertebrates investigating the effects of tetrahydronaphthalene on Artemia salina (brine shrimp).
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