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EC number: 946-099-2 | 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

Short-term toxicity to aquatic invertebrates
Administrative data
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2017-06-02 to 2017-08-21
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: OECD Guideline; EU Method; GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Series on Testing and Assessment, No. 23, "Guidance Document on Aquatic Toxicity Testing of Difficult Substances and Mixtures"
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Phosphoric acid, mono C16-20 (branched, even numbered) alkyl esters
- Molecular formula:
- unspecified
- IUPAC Name:
- Phosphoric acid, mono C16-20 (branched, even numbered) alkyl esters
- Test material form:
- liquid
Constituent 1
- Specific details on test material used for the study:
- Name: Phosphoric acid, mono C16-20 (branched, even numbered) alkyl esters
Batch No.: RP GW 915 MU
Aggregate State at Room Temperature: Liquid
Colour: Light amber
Sampling and analysis
- Analytical monitoring:
- yes
- Details on sampling:
- Duplicate samples from the freshly prepared test medium of the only test concentration and the control were taken at the start of the test and at day 1.
For the determination of the stability of the test item under the test conditions and of the maintenance of the test item concentrations during the test period, duplicate samples from the aged test media of the only test concentration and the control were collected at day 1 (after 24 hours of exposure) and at the end of the test by pouring together the contents of the test beakers of each treatment.
Test solutions
- Vehicle:
- no
- Details on test solutions:
- Test Concentration: The only test item concentration was nominal 100.1 mg test item/L. Additionally; a control was tested in parallel (test water without addition of the test item).
Control: In the control, test water was used without addition of the test item.
Dosage of Test Item: The test medium of the only test item concentration of nominal 100.1 mg/L was prepared by dissolving 50.5 and 52.4 mg test item into 504.5 and 523.5 mL test water by intense stirring for 24 hours and 15 minutes.
The test media was prepared just before introduction of the daphnids (= start of the test) and test medium renewal on Day 1.
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- Species: Daphnia magna (Straus), clone 5
Age at Test Start: From 2.0 to 19.25 hours old
Sex: Female
Origin: The daphnids introduced in the test were taken from ibacon's in house laboratory culture.
Breeding Conditions: The daphnids were bred in the laboratories of ibacon under similar temperature and light conditions as used in the test. The cultivation of the parental daphnids was performed in Elendt M4 medium. The test organisms were not first brood progeny. The daphnids in the stock culture were fed at least on all working days with green algae (Desmodesmus subspicatus) freshly grown in the laboratories of ibacon.
Study design
- Test type:
- semi-static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 48 h
Test conditions
- Hardness:
- Water Hardness: 2.5 mmol/L (= 250 mg/L) as Calcium Carbonate
- Test temperature:
- 20.0 to 21.4 °C in the freshly prepared media;
20.3 to 20.4°C in the aged test media - pH:
- 6.9 to 7.9 in the freshly prepared media;
7.5 to 7.9 in the aged test media; and thus the pH-value did not vary by more than 1.5 units - Dissolved oxygen:
- 8.4 to 8.8 mg/L in the freshly prepared media;
8.2 to 8.8 mg/L in the aged test media - Nominal and measured concentrations:
- nominal 100.1 mg test item/L and a control
- Details on test conditions:
- Test Environment: Controlled environment room
Measurement of pH, Dissolved
Oxygen and Water Temperature:
The water temperature, pH-values and the dissolved oxygen concentrations were determined in all freshly prepared and aged test media of each treatment group. Therefore the residual test media, which were not used for the test, were filtrated through folded filters.
Water Temperature: 20.0 to 21.4 °C in the freshly prepared media;
20.3 to 20.4°C in the aged test media
pH-Values: 6.9 to 7.9 in the freshly prepared media;
7.5 to 7.9 in the aged test media; and thus the pH-value did not vary by more than 1.5 units
Dissolved Oxygen Concentration: 8.4 to 8.8 mg/L in the freshly prepared media;
8.2 to 8.8 mg/L in the aged test media
Light Regime: 16 h light : 8 h dark
Light Intensity: The light intensity was 630 to 900 lux (measured once during the test). - Reference substance (positive control):
- yes
- Remarks:
- For the evaluation of the quality of the Daphnia clone and the consistency of the experimental conditions, the reference item potassium dichromate is tested at least twice a year to demonstrate satisfactory test conditions.
Results and discussion
Effect concentrationsopen allclose all
- Key result
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 100.1 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Effect conc.:
- >= 100.1 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Duration:
- 48 h
- Dose descriptor:
- LOEC
- Effect conc.:
- > 100.1 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Details on results:
- After 48 hours of exposure no immobilisation of the test animals was observed in the control and in the only test concentration of nominal 100.1 mg test item/L.
The quantification of the test item Phosphoric acid, mono C16-20 (branched, even numbered) alkyl esters in the test samples was performed using liquid chromatography with MS/MS detection.
To determine the test item concentration in the test samples a single-point calibration through the standard 200 µg test item/L was used because the validity criteria according to SANCO/3029/99 rev.4 11/07/00 were not met. Therefore, the following values can only be considered as a rough indication of the test item concentration. In the freshly prepared test media at the start of the test and at the renewal of the test media 0.1% of the nominal test concentrations were found (of the nominal concentrations of 100.1 mg test item/L). In the aged test media after 24 and 48 hours test duration, 0.1% of the nominal value was determined of the nominal concentrations of 100.1 mg test item/L). These results confirm the poor solubility of the test item in test water. As also the undiluted part was applied to the test system and the test item is an UVCB substance the reported results refer to nominal test concentrations. - Results with reference substance (positive control):
- In the most recent test with the reference item potassium dichromate performed in January 2017 the EC50 after 24 hours was determined to be 1.48 mg test item/L, indicating that the sensitivity of the daphnids was consistent with the level proposed by the OECD 202 guideline (EC50-24 h between 0.6 and 2.1 mg potassium dichromate/L).
- Reported statistics and error estimates:
- No statistical analysis was performed.
The NOEC and the LOEC were determined directly from the raw data.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Remarks:
- Control Immobilisation Rate: 0 % and furthermore no daphnid showed signs of disease or stress; Dissolved Oxygen Concentration: 8.2 mg O2/L in the control and test vessels at the end of the test
- Conclusions:
- The toxic effect of the test item Phosphoric acid, mono C16-20 (branched, even numbered) alkyl esters to Daphnia magna was assessed in a semi-static limit test. The 48-hour NOEC was determined to be ≥ 100.1 mg test item/L. The 48-hour LOEC was determined to be > 100.1 mg test item/L and the 48-hour EC50 value was determined to be > 100.1 mg test item/L.
- Executive summary:
Title: Phosphoric acid, mono C16-20 (branched, even numbered) alkyl esters: Acute Toxicity to Daphnia magna in a Semi-Static 48-hour Immobilisation Limit Test
Purpose: The purpose of this study was to determine the influence of the test item Phosphoric acid, mono C16-20 (branched, even numbered) alkyl esters on the mobility of Daphnia magna. For this purpose, young daphnids (< 24 hours old) were exposed in a semi-static test for 48 hours to the only concentration of nominal 100.1 mg/L under defined conditions for 48 hours. The recorded effects were the mobility of the daphnids after 24 and 48 hours. The test method of application and the test system are recommended by the test guidelines and Daphnia magna is the recommended test species. The purpose of the analytical part of this study is to verify the concentrations of the test item in the test medium.
Guidelines:
Commission Regulation (EC) No 440/2008, Annex, Part C, C.2.: "Daphnia sp. Acute Immobilisation Test", Official Journal of the European Union (EN), dated May 30, 2008
OECD Guideline for Testing of Chemicals No. 202: "Daphnia sp., Acute Immobilisation Test" adopted April 13, 2004
OECD Series on Testing and Assessment, No. 23, "Guidance Document on Aquatic Toxicity Testing of Difficult Substances and Mixtures", December 15, 2000
SANCO/3029/99 rev.4 11/07/00: Residues: Guidance for generating and reporting methods of analysis in support of pre-registration data requirements for Annex II (part A; Section 4) and Annex III (part A; Section 5) of directive 91/414
Material and Methods
Test Item: Phosphoric acid, mono C16-20 (branched, even numbered) alkyl esters; batch no.: RP GW 915 MU
Test Species: Female Daphnia magna, clone 5; 2.0 to 19.25 hours old
Source: The daphnids introduced in the test were taken from ibacon's in-house laboratory culture.
Test Design: This study encompassed two treatment groups (one test item concentration at nominal 100.1 mg/L, and one control) each containing 20 individuals. The mobility of the daphnids was determined in a semi-static 48-hour test by visual observation after 24 and 48 hours.
Endpoints: Number of immobile organisms after 24 and 48 hours
Test Concentrations: The only test item concentration was nominal 100.1 mg test item/L. Additionally; a control was tested in parallel (test water without addition of the test item).
Test Conditions: Water temperature: 20.0 to 21.4 °C; pH value: 6.9 to 7.9; dissolved oxygen concentration: 8.2 to 8.8 mg/L; photoperiod: 16 h light - 8 h dark; light intensity: 630 to 900 lux; and thus were within the ranges requested by guideline OECD 202
Results / Biological test results: After 48 hours of exposure no immobilisation of the test animals was observed in the control and in the only test concentration of nominal 100.1 mg test item/L.
Analytical test results: The quantification of the test item Phosphoric acid, mono C16-20 (branched, even numbered) alkyl esters in the test samples was performed using liquid chromatography with MS/MS detection. To determine the test item concentration in the test samples a single-point calibration through the standard 200 µg test item/L was used because the validity criteria according to SANCO/3029/99 rev.4 11/07/00 were not met. Therefore, the following values can only be considered as a rough indication of the test item concentration. In the freshly prepared test media at the start of the test and at the renewal of the test media 0.1% of the nominal test concentrations were found (of the nominal concentrations of 100.1 mg test item/L). In the aged test media after 24 and 48 hours test duration, 0.1% of the nominal value was determined of the nominal concentrations of 100.1 mg test item/L). These results confirm the poor solubility of the test item in test water. As also the undiluted part was applied to the test system and the test item is an UVCB substance the reported results refer to nominal test concentrations.
Conclusion: The toxic effect of the test item Phosphoric acid, mono C16-20 (branched, even numbered) alkyl esters to Daphnia magna was assessed in a semi-static limit test. The 48-hour NOEC was determined to be ≥ 100.1 mg test item/L. The 48-hour LOEC was determined to be > 100.1 mg test item/L and the 48-hour EC50 value was determined to be > 100.1 mg test item/L.
This study is classified as acceptable and satisfies the guideline requirements for an acute toxicity study with freshwater invertebrates.
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