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EC number: 816-455-0 | CAS number: 960253-23-0
- 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

Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Specific details on test material used for the study:
- Lot No. : 43
Purity : 96.5%
Expiration date : September 05, 2017 - Analytical monitoring:
- yes
- Details on sampling:
- For the determination of the actual test item concentrations, duplicate samples were taken from
each test concentration and the control at the start and at the end of the two 24-hour test medium
renewal periods.
For sampling from the aged test media, the contents of the respective replicates were combined
prior to sampling.
All samples were stored frozen (at -20 ± 5 °C) immediately after sampling. Based on analytical
pre-experiments for investigation of the storage stability, the test item was found to be stable in
the test water under these storage conditions (see Analytical Procedure, Appendix 1).
The concentrations of GR-86-6599 were analyzed in one of the duplicate test medium samples
taken from all sampling dates. - Vehicle:
- no
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- The study was performed with young daphnids of the species Daphnia magna Straus. A clone
of this species (originally from the Daphnia Collection of the University of Basel/Switzerland
in 2015) is successfully bred in IES Ltd Laboratories. The cultivation of the parental daphnids
is performed in reconstituted water of the quality identical to the water quality used in the tests
(with respect to pH, main ions, and total hardness) and under temperature and light conditions
identical to those of the tests.
During breeding, daphnids were generally fed three times a week with an algal suspension of
the green algae Desmodesmus subspicatus, supplied by the Collection of Algal Cultures (SAG,
Institute for Plant Physiology, University of Göttingen, 37073 Göttingen/Germany) and
cultivated at IES Ltd Laboratories under standardized conditions or a mixture of this algal
suspension and a commercial fish diet (Tetra Min® Hauptfutter, supplied by TETRA-Werke,
49324 Melle/Germany). - Test type:
- semi-static
- Water media type:
- other: Reconstituted test water according to ISO 6341
- Limit test:
- no
- Total exposure duration:
- 48 h
- Hardness:
- 250 mg/L
- Test temperature:
- 21°C
- pH:
- 7.7 - 7.9
- Dissolved oxygen:
- 8.4 mg/L
- Nominal and measured concentrations:
- The results obtained for the concentrations of the test samples are presented in Table 7. The
concentrations determined in the freshly prepared test sample (day 0/0 hours) were 34.8 μg/L
(dilution 1:5.1), 43.8 μg/L (dilution 1:3.4), 72.5 μg/L (dilution 1:2.3), 99.9 μg/L (dilution 1:1.5)
and 135 μg/L (undiluted).
The concentrations determined in the test samples taken from the fresh test media
(day 1/0 hours) were 32.9 μg/L (dilution 1:5.1), 46.9 μg/L (dilution 1:3.4), 73.4 μg/L (dilution
1:2.3), 104 μg/L (dilution 1:1.5) and 151 μg/L (undiluted).
The concentrations determined in the test samples taken from the aged test media
(day 1 / 24 hours) were found to be 26.2 μg/L (dilution 1:5.1), 42.9 μg/L (dilution 1:3.4),
58.4 μg/L (dilution 1:2.3), 72.8 μg/L (dilution 1:1.5) and 99.2 μg/L (undiluted).
The concentrations determined in the test samples taken from the aged test media (day 2 /
24 hours) were found to be 25.8 μg/L (dilution 1:5.1), 48.4 μg/L (dilution 1:3.4), 58.7 μg/L
(dilution 1:2.3), 68.1 μg/L (dilution 1:1.5) and 114 μg/L (undiluted).
The results showed the correct preparation of the test samples. For most of the samples, the test
item concentration slightly decreased over the test period. - Reference substance (positive control):
- yes
- Remarks:
- Potassium Dichromate
- Key result
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 123 µg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other:
- Remarks:
- This exposure concentration represents the maximum water saturation concentration of the test item
- Duration:
- 48 h
- Dose descriptor:
- EC0
- Effect conc.:
- >= 123 µg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other:
- Remarks:
- This exposure concentration represents the maximum water saturation concentration of the test item
- Duration:
- 48 h
- Dose descriptor:
- EC100
- Effect conc.:
- > 123 µg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other:
- Remarks:
- This exposure concentration represents the maximum water saturation concentration of the test item
- Details on results:
- The test is considered to be valid, as in the control no daphnids showed immobilization or other
signs of disease or stress (e.g., discolouration or unusual behaviour such as trapping at the
surface of water). Furthermore, the dissolved oxygen concentration at the end of the test was
≥3 mg/L in all test vessels.
After 48 hours of exposure, no immobilized test organisms were determined in the control and up to and including the highest test concentration of 123 µg/L, corresponding to the saturation concentration of the test item.
As no toxic effect was observed, the 48-hour EC50, 48-hour EC100 and the NOEC were determined directly from the raw datadate to be >123 µg/L and the EC0 and NOEC to be ≥ 123 µg/L. - Results with reference substance (positive control):
- Potassium Dichromate : EC50 (24 hour) = 1.0 mg/L
- Validity criteria fulfilled:
- yes
- Conclusions:
- In conclusion the test item GR-86-6599 had no acute toxic effects on Daphnia magna in a
48-hour semi-static test up to the highest test concentration of 123 μg/L, corresponding to the
saturation concentration of the test item. - Executive summary:
The acute toxicity of the test item GR-86-6599 to Daphnia magna was determined in a 48-hour
semi-static test according to the OECD Guideline for Testing of Chemicals, No. 202 (2004) and
the Commission Regulation (EC) No. 440/2008, Part C.2.
As the test item is a volatile substance, the test was performed using glass tubes completely
filled (without headspace) with test medium that were tightly sealed with glass stoppers to avoid
losses of test item by evaporation (closed system). A semi-static test design with a test medium
renewal after 24 hours was used.
As the test item is a liquid with low water solubility, the slow stirring method was applied for
preparation of a saturated test item solution. For preparation of the highest concentrated test
medium, the test item was carefully applied (pipetted) onto the surface of the test water at a
loading rate of 50 mg/L. Thereafter slow stirring was applied for 48 hours in a closed vessel to
reach a maximum concentration of dissolved test item in the test water. The mixing vessel was
nearly completely filled (a small headspace had to be included as the test item was floating on
the water surface) and tightly sealed with glass stoppers. After this treatment, stirring was
stopped for 24 hours as a precaution to allow phase separation in case test item droplets had
been mixed into the water column during stirring. Following cessation of mixing and the period
of settling, the lower aqueous and equilibrated phase was carefully separated from the nondissolved
upper test item phase through the tap at the bottom of the vessel. This equilibrated
aqueous phase with a loading rate of 50 mg/L, containing dissolved test item only, was used as
highest test concentration and considered to represent the aqueous saturation concentration in
test media of the test item. The highest test concentration was subsequently diluted with test
water to obtain the following test media: the dilutions 1:5.1, 1:3.4, 1:2.3 and 1:1.5. Additionally,
a control (test water without test item) was tested in parallel.
The preparation of the test media was based on the OECD Guidance Document No. 23 on
Aquatic Toxicity Testing of Difficult Substances and Mixtures, 2000.
The measured concentrations of the test item GR-86-6599 in the test media of all test
concentrations at the start and end of the two test medium renewal periods are shown in the
table below. The results demonstrate the correct preparation of the test media, i.e. the spacing
factor of 1.5 between the different test concentrations was sufficiently met. At the end of the
test medium renewal periods, 65 to 103% of the initially measured values were found.
From these results the mean measured concentrations were calculated as follows: for each test
medium renewal period (i.e. Day 0 to Day 1, Day 1 to Day 2), the mean concentration was
calculated as the geometric mean of the test item concentrations measured at the start and the
end of the test medium renewal period. From the two geometric mean values obtained, the mean
measured test item concentration during the test period of 48 hours was calculated as an
arithmetic mean.
The biological results are based on the mean measured concentrations.
After 48 hours of exposure, no immobilized test organisms were determined in the control and
up to and including the highest test concentration of 123 μg/L, corresponding to the saturation
concentration of the test item.
As no toxic effect was observed, the 48-hour EC50 and 48-hour EC100 were determined directly
from the raw data to be >123 μg/L and the EC0 and NOEC to be ≥123 μg/L.
In conclusion the test item GR-86-6599 had no acute toxic effects on Daphnia magna in a
48-hour semi-static test up to the highest test concentration of 123 μg/L, corresponding to the
saturation concentration of the test item.
Reference
Description of key information
The acute toxicity of the test item GR-86-6599 to Daphnia magna was determined in a 48-hour semi-static test according to the OECD Guideline for Testing of Chemicals, No. 202 (2004) and the Commission Regulation (EC) No. 440/2008, Part C.2.
As no toxic effect was observed, the 48-hour EC50 and 48-hour EC100 were determined directly from the raw data to be >123 μg/L and the EC0 and NOEC to be ≥123 μg/L.
In conclusion the test item GR-86-6599 had no acute toxic effects on Daphnia magna in a 48-hour semi-static test up to the highest test concentration of 123 μg/L, corresponding to the saturation concentration of the test item.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 0.123 mg/L
Additional information
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