Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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: 266-024-0 | CAS number: 65996-89-6 The condensation product obtained by cooling, to approximately ambient temperature, the gas evolved in the high temperature (greater than 700°C (1292°F)) destructive distillation of coal. A black viscous liquid denser than water. Composed primarily of a complex mixture of condensed ring aromatic hydrocarbons. May contain minor amounts of phenolic compounds and aromatic nitrogen bases.
Short-term toxicity to fish
Administrative data
- Endpoint:
- short-term toxicity to fish
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 14 - 24 July 2008
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP Guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 203 (Fish, Acute Toxicity Test)
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- Tar, coal, high-temp.
- EC Number:
- 266-024-0
- EC Name:
- Tar, coal, high-temp.
- Cas Number:
- 65996-89-6
- Molecular formula:
- not applicable
- IUPAC Name:
- naphthalene
- Details on test material:
- - Name of test material (as cited in study report): Coal Tar
- Molecular formula (if other than submission substance): not applicable
- Molecular weight (if other than submission substance): not applicable
- Substance type: organic
- Physical state: liquid, viscous
- Stability under test conditions: no measured data; based on chemical structure assumed to be stable
- Storage condition of test material: room temperature, exclusion of light
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
Test solutions
- Vehicle:
- no
- Details on test solutions:
- PREPARATION AND APPLICATION OF TEST SOLUTION (especially for difficult test substances)
- Method: Water Accommodated Fractions (WAFs) prepared by stirring various amounts of the test item in dechlorinated tap water for 24 h with magnetic stirrers. The WAFs were prepared in 20-L glass fish tanks. The beakers were equipped with a glass tube that allowed the separation of the water phase by siphoning.
The test loading rates of coal tar were weighed on watch-glasses, that afterwards were placed into the glass vessels.
The glass tanks were then filled with the tap water. Mixing was carried out at a speed that was slow enough not to cause dispersion or emulsification of the undissolved fraction of the test item.
To ensure this, the vortex developed at the surface by stirring was set at ~ 10 % of the water depth. After stirring for 24 h the WAFs were allowed to stand for 1 h before use to facilitate phase separation.
The extracts gained with this method were clear.
- Differential loading: control, 10 mg/L, 25 mg/L, 50 mg/L, 100 mg/L, and 250 mg/L
- Controls: without test material (blank; tap water)
- Chemical name of vehicle (organic solvent, emulsifier or dispersant): none
- Evidence of undissolved material (e.g. precipitate, surface film, etc): no
Test organisms
- Test organisms (species):
- Danio rerio (previous name: Brachydanio rerio)
- Details on test organisms:
- TEST ORGANISM
- Common name: Zebra fish- Strain: - Source: Max-Planck-Institute für Entwicklungsbiologie, Tübingen
- Age at study initiation (mean and range, SD): no data- Length at study initiation (length definition, mean, range and SD): 3.0 - 3.5 cm
- Weight at study initiation (mean and range, SD): no data
- Feeding during test: none
ACCLIMATION
- Acclimation period: >12 days
- Acclimation conditions: same as test
- Type and amount of food: no data- Feeding frequency: no data
- Health during acclimation (any mortality observed): mortality <1%
Study design
- Test type:
- semi-static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 96 h
- Remarks on exposure duration:
- water/WAF renewal: each 24 h
- Post exposure observation period:
- none
Test conditions
- Hardness:
- Total hardness 8.97 °dH
Carbonate hardness 6.98 °dH - Test temperature:
- 21.5 - 22.3 °C
- pH:
- 8.1 - 8.5
- Dissolved oxygen:
- 81 - 96 % of saturation
- Salinity:
- no data
- Nominal and measured concentrations:
- nominal: 10, 25, 50, 100, and 250 mg/L measured (as TOC):
Period Control 10 mg/L 50 mg/L 250 mg/L (loading)#
======================================================================
- 0-24 h start 1.2 2.4 3.5 3.6 mg/L (TOC of WAF)
- 0-24 h end 1.6 2.6 3.0 3.5 mg/L (TOC of WAF)
- 72-96 h start 1.8 2.5 3.4 4.0 mg/L (TOC of WAF)
- 72-96 h end 1.3 2.2 2.9 4.0 mg/L (TOC of WAF)
======================================================================
Tar-borne TOC values were about 0.7 - 1.2 mg/L (at 10 mg tar/L), 1.4 - 2.3 mg/L (at 50 mg tar/L), and 1.9 - 2.7 mg/L (at 250 mg tar/L). - Details on test conditions:
- TEST SYSTEM- Test vessel:
- Type (delete if not applicable): open
- Material, size, headspace, fill volume: 20 L, test volume 7 L
- Aeration: none- Renewal rate of test solution (frequency/flow rate): every 24 h- No. of organisms per vessel: 7
- No. of vessels per concentration (replicates): 1
- No. of vessels per control (replicates): 1
- No. of vessels per vehicle control (replicates): 1
- Biomass loading rate: 1 fish/L
OTHER TEST CONDITIONS
- Adjustment of pH: no
- Photoperiod: light / dark: 14 h/ 10 h
- Light intensity: fluorescent tubes, no data
EFFECT PARAMETERS MEASURED (with observation intervals if applicable) : Swarming-behaviour, activity, balance, surfacing, mortality, breathing frequency, apathy
TEST CONCENTRATIONS- Spacing factor for test concentrations: 2 - 2.5
- Range finding study
- Test concentrations: based on previous daphnia study - Reference substance (positive control):
- no
Results and discussion
Effect concentrationsopen allclose all
- Key result
- Duration:
- 96 h
- Dose descriptor:
- LL50
- Effect conc.:
- > 250 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mortality (fish)
- Remarks on result:
- other: ; (LL = lethal loading)
- Duration:
- 96 h
- Dose descriptor:
- NOELR
- Effect conc.:
- 25 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- behaviour
- Duration:
- 96 h
- Dose descriptor:
- LOELR
- Effect conc.:
- 50 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- behaviour
- Remarks:
- : slightly reduced activity from 24 h onwards
- Details on results:
- No mortality at any test concentration
Observations at the end of the test after feeding of fish:
- Control: All fish fed immediately.
- 10 mg/L: All fish fed immediately.
- 25 mg/L: All fish fed immediately.
- 50 mg/L: All fish fed immediately.
- 100 mg/L: All fish fed with slight retardation compared to the control.
- 250 mg/L: All fish fed with slight retardation compared to the control.
After the end of the test, the fish were kept in de-chlorinated tap water from 19.07.08 to 21.07.08. During this period, fish derived from the test loading rates of 50, 100 and 250 mg/L recovered and showed normal behaviour.
The fish derived from the control and the test loading rates of 10 and 25 mg/L also showed normal behaviour.
Any other information on results incl. tables
- Sublethal observations / clinical signs:
Number of dead fish and cumulative lethality [%] at various observation times (Report, Tab. 3)
Time [h]
Control
10 mg/L
25 mg/L
50 mg/L
100 mg/L
250 mg/L
Number
[%]
Number
[%]
Number
[%]
Number
[%]
Number
[%]
Number
[%]
24
0/7
0
0/7
0
0/7
0
0/7
0
0/7
0
0/7
0
48
0/7
0
0/7
0
0/7
0
0/7
0
0/7
0
0/7
0
72
0/7
0
0/7
0
0/7
0
0/7
0
0/7
0
0/7
0
96
0/7
0
0/7
0
0/7
0
0/7
0
0/7
0
0/7
0
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Remarks:
- - Dissolved oxygen in all vessels: >= 81 % (nominal value > 60 %) / - Lethality in the control in the Fish-Test: 0 fish (nominal value ≤ 1 fish) / - final WAFs >=80% of initial WAFs.
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.
