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EC number: 263-167-0 | CAS number: 61791-34-2
- 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:
- 11 May 2009 - 30 Jun 2009
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
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 301 B (Ready Biodegradability: CO2 Evolution Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Onium compounds, morpholinium, 4-ethyl-4-soya alkyl, Et sulfates
- EC Number:
- 263-167-0
- EC Name:
- Onium compounds, morpholinium, 4-ethyl-4-soya alkyl, Et sulfates
- Cas Number:
- 61791-34-2
- Molecular formula:
- Not available for UVCB substance
- IUPAC Name:
- 4-ethyl-4-(hexadecanoyloxy)morpholin-4-ium 4-ethyl-4-[(9E)-octadec-9-enoyloxy]morpholin-4-ium 4-ethyl-4-[(9E,12E)-octadeca-9,12-dienoyloxy]morpholin-4-ium triethyl sulfate
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge: Cambridge Sewage Treatment Plant, UK
- Pretreatment: Sieved to 850 μm, settled, decanted and resuspended using mineral media. Centrifuged at 4000 rpm for 10 minutes discarding the supernatant, re-suspended and centrifuged again at 4000 rpm for 10 minutes and discharging the supernatant. Dry sludge solids determination was conducted on pellet produced.
- Concentration of sludge: 0.03 g/L (dry sludge solids) - Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- >= 10 - <= 20 mg/L
- Based on:
- TOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- TEST CONDITIONS
- Composition of medium: according to guideline
- Test temperature: 22 +/- 2°C
- Suspended solids concentration: 30 mg/L
- Continuous darkness: yes
TEST SYSTEM
- Culturing apparatus: conical flasks of 2000 mL volume
- Number of culture flasks/concentration: duplicates
- Method used to create aerobic conditions: : the inoculated mineral medium was aerated by the passage of carbon dioxide free air at a controlled rate.
- Details of trap for CO2: The carbon dioxide is trapped in sodium hydroxide and is measured as dissolved inorganic carbon using a Tekmar-Dohrmann Phoenix 8000. On day 28 1 mL of concentrated HCl is added to each bioreactor, which are then aerated overnight, to drive off the remaining carbon dioxide. One last analysis of evolved carbon dioxide is made on day 29.
SAMPLING
- Sampling frequency: 2, 5, 7, 10, 14, 19, 23, 28, 29 day
CONTROL AND BLANK SYSTEM
- Inoculum blank: yes, in duplicate
- Reference control: yes, in duplicate
- Toxicity control: yes, single replicate
Reference substance
- Reference substance:
- acetic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 0
- Sampling time:
- 29 d
- Remarks on result:
- other:
- Remarks:
- reported as - 7 %
BOD5 / COD results
- Results with reference substance:
- After 29 days a degradation of 85% was reached.
Any other information on results incl. tables
Table 1: Biodegradation
Time (days) |
Biodegradation (%) |
||
Reference item |
Test material |
Toxicity control |
|
0 |
0 |
0 |
0 |
2 |
28 |
0 |
4 |
5 |
51 |
-1 |
46 |
7 |
58 |
-1 |
51 |
10 |
64 |
-2 |
53 |
14 |
67 |
-1 |
62 |
19 |
78 |
-3 |
68 |
23 |
80 |
-4 |
69 |
28 |
77 |
-8 |
71 |
29 |
85 |
-8 |
83 |
29 |
84 |
-7 |
87 |
Table 2: Validity criteria
Criterion from the guideline |
Outcome |
Validity criterion fulfilled |
Difference of extremes of replicate values of the removal of the test chemical at the plateau, at the end of the test or at the end of the 10-d window, as appropriate, is less than 20%. |
NA no degradation occurred |
NA |
Percentage degradation of the reference compound has reached the pass levels by day 14. |
67% |
yes |
The toxicity control should degrade to at least 35% (based on DOC) or at least 25% (based on ThOD or ThCO2) within 14 d. |
62% |
yes |
The IC content of the test substance suspension in the mineral medium at the beginning of the test must be less than 5% of the TC. |
Not reported |
Could not be assessed |
The total CO2 evolution in the inoculum blank at the end of the test should not normally exceed 40 mg/L medium. |
33.2 mg/L |
yes |
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Remarks:
- please refer to "any other information on results incl. tables"
- Interpretation of results:
- not readily biodegradable
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