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EC number: 500-147-5 | CAS number: 61788-85-0 1 - 6.5 moles ethoxylated
- 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
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 7 July 2017 to 30 October 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
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 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Castor oil, hydrogenated, ethoxylated
- EC Number:
- 500-147-5
- EC Name:
- Castor oil, hydrogenated, ethoxylated
- Cas Number:
- 61788-85-0
- Molecular formula:
- C57H110O9 (C2H4O)n where n = 1-6.5
- IUPAC Name:
- Castor oil, hydrogenated, ethoxylated
- Test material form:
- solid
- Remarks:
- pasty wax
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge: Totnes Sewage Treatment Works, Totnes, Devon, UK
- Storage conditions: aerated at room temperature at pH 7.0 ± 1.0.
- Storage length: 2 days
- Preparation of inoculum for exposure: Six days prior to the exposure start the activated sludge was centrifuged, washed and re suspended in the mineral medium and the solids concentration determined. This sludge was then diluted in medium, added to test bottles and stirred until required for use. The seeded mineral medium was pre-conditioned for six days to reduce the blank oxygen uptake readings in the test.
- Concentration of sludge: 30 mg/L - Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
- Remarks:
- calculated as BOD/COD
- Details on study design:
- TEST CONDITIONS
- Composition of medium: according to the guideline
- Additional substrate: none
- Solubilising agent (type and concentration if used): none
- Test temperature: 22 ± 1 °C
- pH: 7.4 ± 0.2 (actual 6.78-7.32)
- pH adjusted: no
- Sludge concentration: 30 mg/L
- Continuous darkness: yes
TEST SYSTEM
- Culturing apparatus: dark glass 500 mL bottle placed in incubator
- Number of culture flasks/concentration: 3
- Method used to create aerobic conditions: continuously stirred
- Measuring equipment: Oxitop respirometer
- Details of trap for CO2 and volatile organics if used: KOH
Examiniations
- Frequency: daily
- Method: measurement of decrease in pressure over 240 min period
CONTROL AND BLANK SYSTEM
- Inoculum blank: yes (3 replicates)
- Abiotic sterile control: none
- Toxicity control: yes (3 replicates)
STATISTICAL METHODS: NA
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradationopen allclose all
- Parameter:
- other: % degradation BOD/COD
- Value:
- 15
- Sampling time:
- 5 d
- Remarks on result:
- other: start of degradation on day 3
- Parameter:
- other: % degradation BOD/COD
- Value:
- 55
- Sampling time:
- 28 d
- Parameter:
- other: % degradation BOD/COD
- Value:
- 64
- Sampling time:
- 42 d
- Details on results:
- Initial pH 7.32, at 28 days 6.78-7.15for substance
Initial pH 7.2, at 28 days 7.3 for inoculum blank
Any other information on results incl. tables
Day |
Biodegradationb(%) Reference Substance |
Biodegradationb(%) substance |
Biodegradationb(%) Tox control |
Mean |
Mean |
Mean |
|
5 |
64 |
15 |
26 |
10 |
72 |
27 |
31 |
15 |
75 |
39 |
35 |
20 |
76 |
47 |
38 |
25 |
77 |
53 |
40 |
30 |
78 |
56 |
42 |
35 |
79 |
59 |
44 |
40 |
80 |
62 |
45 |
42 |
80 |
64 |
46 |
Biodegradation (%) = Biological Oxygen Demand (g O2/g)× 100 /ThOD (1.67 g O2/g) and/or COD (2.16 g O2/g)
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- inherently biodegradable
- Conclusions:
- The substance is inherently biodegradable
- Executive summary:
Subject
Determination of Ready Biodegradability
Guideline
OECD 301F: Manometric respirometry
Test concentration
Control and 100 mg/L
Length of test
42 days
Nominal
test temperature
22 ± 1°C
Mean degradation after 28 days
55%
Mean degradation after 42 days
64%
Classification
Inherently biodegradable
Conclusions
The substance attained a mean level of biodegradation (based on the BOD:COD ratio) of 64% after 42 days and the results showed good replication.
The substance exhibited the potential for rapid degradation and can be classified as inherently biodegradable.
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