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Diss Factsheets
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EC number: 218-658-4 | CAS number: 2212-32-0
- 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
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Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
- Endpoint:
- activated sludge respiration inhibition testing
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Exposure: 26. February 1999
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study (GLP)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
- Qualifier:
- according to guideline
- Guideline:
- ISO 8192 (Water quality - Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation)
- Qualifier:
- according to guideline
- Guideline:
- other: EC guideline 88/302/EEC
- GLP compliance:
- yes
- Specific details on test material used for the study:
- Batch number Vers. 98/044-10
- Analytical monitoring:
- no
- Vehicle:
- no
- Test organisms (species):
- activated sludge, domestic
- Details on inoculum:
- - Source: Activated sludge from laboratory wastewater plants treating municipal and synthetic sewage.
- Preparation of inoculum for exposure: The inoculum was washed, brought to a concentration of 5 g/I dry substance and aerated for 24 hours .
50 ml were added to a total volume of 250 ml to obtain a concentration of 1 g/I dry substance in the test . - Test type:
- static
- Water media type:
- freshwater
- Total exposure duration:
- 30 min
- Test temperature:
- 20 ±2°C
- pH:
- 7.4
- Nominal and measured concentrations:
- Nominal test concentration: 1000 mg/L
- Details on test conditions:
- TEST CONCENTRATIONS
- Test concentrations: 1000 mg/L
TEST SYSTEM
- Test vessel: Erlenmeyer glass vessel (nominal value 250 mL)
- Fill volume: 250 mL
- No. of vessels per concentration (replicates): 1
- No. of vessels per control (replicates): 3 - Reference substance (positive control):
- yes
- Remarks:
- 3,5-dichlorophenol
- Duration:
- 30 min
- Dose descriptor:
- other: EC20
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- inhibition of total respiration
- Remarks:
- respiration rate
- Results with reference substance (positive control):
- EC50 of 3,5 -dichlorophenol in the range of 5-30 mg/I: yes
- Reported statistics and error estimates:
- Graphical interpreation of the results.
- Validity criteria fulfilled:
- yes
- Conclusions:
- Based on the results of oxygen consumption, the EC50 (30 minutes) for 2-[[2-(Dimethylamino)ethyl]methylamino]ethanol [CAS# 2212-32-0]was estimated to be >1000 mg/L.
- Executive summary:
The toxicity to bacteria of 2-[[2-(Dimethylamino)ethyl]methylamino]ethanol [CAS# 2212-32-0] (identified as Halb-PMDETA in the study report) was investigated according to OECD 209. Activated sludge (mixed population of different micro-organisms) was exposed for 30 minutes to a nominal concentration of 1000 mg/L. Two controls without test substance are included in the test design. 3,5-dichlorophenol was used as a reference substance.
Based on the results of oxygen consumption, the EC50 (30 minutes) for 2-[[2-(Dimethylamino)ethyl]methylamino]ethanol [CAS# 2212-32-0] was estimated to be >1000 mg/L, indicating low toxicity of 2-[[2-(Dimethylamino)ethyl]methylamino]ethanol [CAS# 2212-32-0] to aerobic waste water treatment bacteria.
Reference
Summary of measurements:
Vessel no.: |
BC 1 |
BC 2 |
BC 3 |
mvBC |
TS 1 |
Concentration of test substance (mg/L) |
- |
- |
- |
- |
1000 |
Added volume of stock solution (mL/vessel) |
- |
- |
- |
- |
125.5 |
Direct addition (mg/vessel) |
- |
- |
- |
- |
- |
Oxygen concentration start (mg O2/L) |
8.3 |
8.2 |
8.0 |
- |
8.4 |
Oxygen concentration after 6 min (mg O2/L) |
5.7 |
5.8 |
5.5 |
- |
6.0 |
Oxygen consumption rate (mg O2/L*6 min) |
2.6 |
2.4 |
2.5 |
2.5 |
2.4 |
Oxygen consumption rate (mg O2/L*h) |
26 |
24 |
25 |
25 |
24 |
Specific oxygen consumption rate (mg O2/g*h) |
26 |
24 |
25 |
25 |
24 |
Change in oxygen consumption rate compared with the blank control (%) |
- |
- |
- |
- |
4 |
- BC: blank control
- mvBC: mean value of blank control
- TS: test substance
pH values – blank control (BC) and test substance (TS):
Vessel no.: |
BC 1 |
BC 2 |
BC 3 |
TS 1 |
pH-value before adding the inoculum before correction: after correction: |
6.7 7.2 |
6.7 7.2 |
6.7 7.3 |
9.5 7.4 |
pH-value after an incubation time of 30 min |
- |
- |
- |
7.6 |
Description of key information
The EC50 (30 minutes) for 2-[[2-(Dimethylamino)ethyl]methylamino]ethanol [CAS# 2212-32-0]was estimated to be >1000 mg/L
Key value for chemical safety assessment
- EC50 for microorganisms:
- 1 000 mg/L
Additional information
The toxicity to bacteria of 2-[[2-(Dimethylamino)ethyl]methylamino]ethanol [CAS# 2212-32-0] (identified as Halb-PMDETA in the study report) was investigated according to OECD 209. Activated sludge (mixed population of different micro-organisms) was exposed for 30 minutes to a nominal concentration of 1000mg/L. Two controls without test substance are included in the test design. 3,5-dichlorophenol was used as a reference substance.
Based on the results of oxygen consumption, the EC50 (30 minutes) for 2-[[2-(Dimethylamino)ethyl]methylamino]ethanol [CAS# 2212-32-0]was estimated to be >1000 mg/L, indicating low toxicity of 2-[[2-(Dimethylamino)ethyl]methylamino]ethanol [CAS# 2212-32-0]to aerobic waste water bacteria.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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