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EC number: 812-497-9 | CAS number: 1893414-79-3
- 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
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- 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 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Deviations:
- no
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Specific details on test material used for the study:
- Name: Phosphoric acid, C14-15 branched and linear alkyl esters, potassium salts
CAS No.: 1893414-79-3
Physical state: white solid at 20 °C
Batch No.: PU61810016
Re-certification date of batch: 09 March 2018
Purity: 100 % (UVCB, lyophilized solid, water content 0.85 % (w/w))
Stability: stable under test conditions
Storage condition of test material: Room temperature, protected from light - Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- Activated sludge from the municipal wastewater treatment plant Breisgauer Bucht (Forchheim, Germany) was used as inoculum with a concentration corresponding to 30 mg dry solids per litre. The treatment plant clarifies predominantly domestic wastewater of the region of Freiburg and has a capacity of 600.000 inhabitant equivalents. Sampling date of activated sludge was 2 November 2016. Dry solid of the activated sludge was determined as 3.9 g/L by weight measurements after 3 h drying at 105 °C (mean of triplicate measurements). The activated sludge was washed twice with tap water by settling the sludge, decanting the supernatant and re-suspending the sludge.
- Duration of test (contact time):
- 28 d
- Initial conc.:
- >= 98.9 - <= 101.7 mg/L
- Based on:
- ThOD
- Parameter followed for biodegradation estimation:
- O2 consumption
- Reference substance:
- acetic acid, sodium salt
- Test performance:
- - The difference of extremes of replicate values was less than 20%.
- The biodegradation of the reference item reached the pass level of 60% ThOD by day 4.
- The degradation extent in the toxicity control was above 25% in 14 days based on ThOD. - Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 46.7
- Sampling time:
- 28 d
- Details on results:
- Validity criteria:
- The oxygen uptake of the inoculum blank was below 60 mg O2/L within 28 days.
- The pH value in the test and blank bottles was 7.6 at the end of the test.
- The difference of extremes of replicate values was less than 20%.
- The biodegradation of the reference item reached the pass level of 60% ThOD by day 4.
- The degradation extent in the toxicity control was above 25% in 14 days based on ThOD. - Results with reference substance:
- The reference compound sodium acetate reached the pass level for ready biodegradability (≥ 60% ThOD and fulfilment of the 10-day window) within 8 days (see table 2). The pH in the test bottles at the end of the test was 9.1.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The degradation extent of the test item at the end of the test was 46.7% (mean of three replicates). The criterion for ready biodegradation was not met (degradation ≥ 60% and fulfilment of 10-d-window) therefore the test item is not ready biodegradable according to the OECD criteria.
- Executive summary:
In a OECD 301 f study the degradation extent of the test item at the end of the test was 46.7% (mean of three replicates). The criteria for the validity of the study were met. The criterion for ready biodegradation was not met (degradation ≥ 60% and fulfilment of 10-d-window) therefore the test item is not ready biodegradable according to the OECD criteria.
Reference
Test item:
The biodegradation of the test item was 46.7% within 28 days (mean of three replicates).
Therefore the test item did not reach the criteria for ready biodegradability according the OECD criteria (≥ 60% ThOD and fulfilment of the 10-d window). The pH in the test bottles at the end of the test was 7.6.
Reference item:
The reference compound sodium acetate reached the pass level for ready biodegradability (≥ 60% ThOD and fulfilment of the 10-day window) within 8 days (see table 2). The pH in the test bottles at the end of the test was 9.1.
Toxicity control:
The degradation in the toxicity control reached 25.5% within 4 days and was thus above the criterion for inhibition effects to the inoculum (<25% on day 14). The test item had no toxic effect to the inoculum according to the validity criteria of OECD 301. The pH in the vessel was 8.7.
Blank:
The oxygen consumption of the blanks was 29.0 mg/L in 28 days (mean of three replicates). The pH in the vessels was 7.6.
Temperature:
The temperature range was 21.8 – 22.8 °C throughout the whole study.
Discussion of the results
The elementary analysis (performed by ASG Analytic Service GmbH) showed the following results: C = 53.7%; H = 9.91%; P = 8.75%; O = 5.8% (complete = 78.16%). Out of this a ThOD of 2.91 mgO2 / mg test item could be calculated.
Obviously an amount of 21.84% is missing to get the complete composition of the test item. According to the information from the sponsor the test item should have a considerable content of potassium. For calculating the ThOD we assumed therefore that the potassium content is 21.84%. This leads to a ThOD of 2.35 mg O2/ mg test item. The evaluation was therefore performed with the ThOD of 2.35 mg O2 / mg test item. Nevertheless the degradation extent calculated with both ThOD-contents would give results under 60%. The overall result would not be influenced by a more detailed elementary analysis.
Biodegradation in % of ThOD
Test item | Toxicity control | Reference item | |||||
Test item [mg/164 ml] | 7.1 | 6.9 | 7.1 | 7.1 | |||
Reference item [ml/164 ml] | 164 | 164 | 164 | 164 | |||
ThoD [mg/l] | 101.7 | 98.9 | 101.7 | 201.7 | 100.0 | 100.0 | 100.0 |
Day | |||||||
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
4 | -1.8 | 3.8 | 0.9 | 25.5 | 51.5 | 51.5 | 48.7 |
8 | -0.9 | 7.6 | 1.8 | 33.0 | 63.8 | 66.6 | 66.6 |
12 | 4.6 | 16.1 | 10.2 | 38.4 | 75.1 | 75.1 | 75.1 |
16 | 8.4 | 31.4 | 13.9 | 43.5 | 75.7 | 78.7 | 73.2 |
20 | 21.2 | 47.5 | 24.0 | 48.5 | 77.8 | 80.8 | 77.8 |
24 | 31.4 | 57.9 | 34.1 | 53.5 | 79.8 | 82.8 | 79.8 |
28 | 40.6 | 56.0 | 43.4 | 58.0 | 81.0 | 78.0 | 75.0 |
Description of key information
The degradation extent of the test item at the end of the test was 46.7% (mean of three replicates). The criterion for ready biodegradation was not met (degradation ≥ 60% and fulfilment of 10-d-window) therefore the test item is not ready biodegradable according to the OECD criteria.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable
Additional information
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