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EC number: 214-478-5 | CAS number: 1132-61-2
- 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
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:
- 8 October - 24 November 2003
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP - guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 003
- Report date:
- 2003
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Deviations:
- yes
- Remarks:
- : The test temperature in the tests laid above the limit of 22 °C (maximum 23,8 °C). As the results of the study showed no inconsistencies, this deviation was stated as uncritical.
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- Deviations:
- yes
- Remarks:
- : The test temperature in the tests laid above the limit of 22 °C (maximum 23,8 °C). As the results of the study showed no inconsistencies, this deviation was stated as uncritical.
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- (Landesamt für Umweltschutz und Gewerbeaufsicht , Rheinallee 97-101 , D-55118 Mainz , Germany)
Test material
- Reference substance name:
- 4-morpholinopropanesulphonic acid
- EC Number:
- 214-478-5
- EC Name:
- 4-morpholinopropanesulphonic acid
- Cas Number:
- 1132-61-2
- Molecular formula:
- C7H15NO4S
- IUPAC Name:
- 3-morpholin-4-ylpropane-1-sulfonic acid
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material (as cited in study report) : MOPS HIGH PURITY
- Composition of test material : 3-(N-Morpholino)-propane sulfonic acid
- Substance type : pure substance
- Physical state : white powder
- Analytical purity : 100,3%
- Purity test date : not stated
- Lot/batch No. : 1190567/006
- Expiration date of the lot/batch : 31 August 2004
- Stability under test conditions : At the end of the test, the concentration of the test item in the treatment was determined as 105 % of the measured concentration at the beginning of the test. Therefore the test item can be stated as stable under test conditions.
- Storage condition of test material : The test item was stored in a closed polyethylene vessel at room temperature and kept away from ignition sources.
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
- Details on sampling:
- The real concentration of the test item in the treatment was determined before and after the test.
Test solutions
- Vehicle:
- no
- Details on test solutions:
- Pre-Test
Preparation of the test solutions :
A stock solution containing 1000 mg/L in dilution water was prepared . The stock solution then was used to prepare four concentrations in a geometric series , spaced by the factor 10.
Main Study :
Preparation of the test solutions
The result of the pre-test showed that the EC50 must lie above 1000 mg/L . Therefore the main study was performed as a limit test. A solution containing 1000 mg/L was prepared.
Reference Test :
Preparation of the test solutions
A stock solution containing 250 mg K2Cr2O7 /L in deionized water was diluted with dilution water to give a series of seven concentrations between 0,625 and 3,0 mg/L.
Dilution Water
Drinking water with an enrichment of certain minerals was used in the test.
Amount added:
CaCl2*2H2O : 179,0 mg/L
MgSO4*7H2O : 69,5 mg/L
NaCl : 16,1 mg/L
KCl : 0,65 mg/L
After preparation, the dilution water was aerated, and the pH was adjusted to 7,8 ± 0,2.
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Common name : Water flea
- Source : Origin : Umweltbundesamt Berlin
- Age at study initiation (mean and range, SD): between 0 and 24 h
- Method of breeding: maintained in glass beakers with a nominal volume 2 L containing M4-Medium (see "Any other information on materials and methods incl. tables") at temperature 20±2°C; 16 hours light, 8 hours dark , using neon tubes ; Food : cold water fish food Tetra Aminin®, finely ground, suspended in M4-Medium and boiled for three seconds, green algae (Desmodesmus subspicatus) ; changing of medium : twice a week
- Feeding during test : none
Selection of Daphnia
24 hours before the start of the test, the adult animals were separated from the youngs . 23 hours later, the adults were caught with the help of a glass tube, and the newborn daphnia , aged between 0 and 23 hours, were sieved from the medium and immediately placed into a 250 ml-beaker containing dilution water. After a settling-in period of 30 minutes, animals which showed no apparent damage were used for the test.
There was no difference in the selection of animals in pre-test and main study.
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 48 h
Test conditions
- Hardness:
- no data
- Test temperature:
- 20 ± 2°C (deviation within the test ± 1°C)
- pH:
- Pre-Test : 6,6 - 8,1
Main Study : 6,8 - 6,9
Reference Test : 7,3 - 7,8 - Dissolved oxygen:
- Pre-Test : 8,0 - 8,3 mg/L
Main Study : 7,5 - 8,5 mg/L
Reference Test : 7,5 - 8,7 mg/L - Nominal and measured concentrations:
- The analytical determination of the test item in the test solution showed a very good recovery after 48 hours.
The recovery of more than 100 % was probably caused by evaporation effects. The test item can be considered as stable under the test conditions.
(For Details see "Any other information on materials and methods incl. tables") - Details on test conditions:
- TEST SYSTEM
- Test vessel:
- Type : open
- Material, size, headspace, fill volume : glass beakers , nominal volume 50 ml containing 20 ml test solution , tall shape
- Aeration : none
- Renewal rate of test solution (frequency/flow rate) : none
- No. of organisms per vessel : 5
- No. of vessels per concentration (replicates) : 2 in the pre-test ; 4 in the main study
- No. of vessels per control (replicates) : 4
- No. of vessels per blank (replicates) : 2 in the pre-test ; 4 in the main study
TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water : Drinking water with an enrichment of certain minerals was used in the test.
Amount added:
CaCl2*2H2O : 179,0 mg/L
MgSO4*7H2O : 69,5 mg/L
NaCl : 16,1 mg/L
KCl : 0,65 mg/L
After preparation, the dilution water was aerated, and the pH was adjusted to 7,8 ± 0,2.
OTHER TEST CONDITIONS
- Lighting : none
- Feeding : none
TEST CONCENTRATIONS
- Pre-Test : 1000/100/10/1 mg/L
- Main study : 1000 mg/L
- Results used to determine the conditions for the definitive study : The result of the pre-test showed that the EC50 must lie above 1000 mg/L. Therefore the main study was performed as a limit test. A solution containing 1000 mg/L was prepared. - Reference substance (positive control):
- yes
- Remarks:
- Potassium dichromate K2Cr2O7 (CAS No. 7778-50-9)
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 24 h
- Dose descriptor:
- other: NOEL
- Effect conc.:
- 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: immobilization
- Remarks on result:
- other: not determined
- Duration:
- 24 h
- Dose descriptor:
- other: EC50i
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: immobilization
- Remarks on result:
- other: not determined
- Duration:
- 24 h
- Dose descriptor:
- other: EC100i
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: immobilization
- Remarks on result:
- other: not determined
- Duration:
- 48 h
- Dose descriptor:
- other: NOEL
- Effect conc.:
- 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: immobilization
- Remarks on result:
- other: not determined
- Duration:
- 48 h
- Dose descriptor:
- other: EC50i
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: immobilization
- Remarks on result:
- other: not determined
- Duration:
- 48 h
- Dose descriptor:
- other: EC100i
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: immobilization
- Remarks on result:
- other: not determined
- Details on results:
- In the initial experiment, four concentrations of the test item in a geometric series (spaced by factor 10, the highest being 1000 mg/L) were used. For each concentration, ten daphnia were exposed to the test item for 48 hours.
No concentration caused immobilization towards the daphnia.
None of the animals showed signs of morbidity.
The main study was performed as a limit test using the nominal concentration 1000 mg/L, which showed no effect on the daphnia. The real concentration of the test item in the treatment was determined before and after the test. The test item can be stated as stable under the test conditions. Therefore the nominal concentration was used to estimate the results. - Results with reference substance (positive control):
- For the estimation of the EC50 of the reference substance, the fit showed sufficient statistical correspondance of the data with the dose-response-equation.
Any other information on results incl. tables
Findings
Pre-Test
Conc. in mg/L | Immobility abs. t=24 +48h | Immobility in % t=24 +48h | pH (t=0h) | pH (t=48h) | O2 -conc. mg/L (t=0h) | O2 -conc. mg/L (t=48h) | |
0 | 0 | 0 | 0 | 7,7 | 8,1 | 8,3 | 8,1 |
1000 | 0 | 0 | 0 | 6,6 | 7,0 | 8,3 | 8,1 |
100 | 0 | 0 | 0 | 7,4 | 8,1 | 8,3 | 8,1 |
10 | 0 | 0 | 0 | 7,8 | 8,1 | 8,3 | 8,0 |
1 | 0 | 0 | 0 | 7,8 | 8,0 | 8,3 | 8,0 |
Main Study
Conc. in mg/L | Immobility abs. t=24 +48h | Immobility in % t=24 +48h | pH (t=0h) | pH (t=48h) | O2-conc. mg/L (t=0h) | O2-conc. mg/L (t=48h) | |||
0 | 0 | 0 | 0 | 0 | 0 | 8,1 | 7,9 | 8,5 | 7,8 |
1000 | 0 | 0 | 0 | 0 | 0 | 6,9 | 6,8 | 8,5 | 7,5 |
Reference Test
Conc. in mg/L | Immobility abs. | Immobility in % | pH (t=0h) | pH (t=48h) | O2-conc. mg/L (t=0h) | O2-conc. mg/L (t=48h) | |||
0 | 0 | 0 | 0 | 0 | 0 | 7,7 | 7,7 | 8,6 | 7,8 |
3,0 | 5 | 5 | 5 | 5 | 100 | 7,8 | 7,7 | 8,6 | 7,8 |
2,5 | 5 | 5 | 5 | 5 | 100 | 7,8 | 7,6 | 8,7 | 7,8 |
2,0 | 5 | 4 | 5 | 3 | 85 | 7,8 | 7,7 | 8,6 | 7,8 |
1,5 | 3 | 2 | 4 | 1 | 50 | 7,8 | 7,6 | 8,6 | 7,7 |
1,25 | 1 | 0 | 0 | 0 | 5 | 7,8 | 7,8 | 8,6 | 7,7 |
1,0 | 0 | 0 | 0 | 0 | 0 | 7,7 | 7,7 | 8,6 | 7,6 |
0,625 | 0 | 0 | 0 | 0 | 0 | 7,7 | 7,3 | 8,5 | 7,5 |
Validity criteria
- The 24h EC50i of K2Cr2O7 should lie between 0,6 and 2,4 mg/L. The 24h EC50i of K2Cr2O7 was determined as 1,5 mg/L.
- Immobilization in the blanks may not exceed 10 %. Immobilization in the blanks was 0 %.
- The concentration of dissolved oxygen at the end of the test must be at least 60% of the saturation value . The lowest concentration of dissolved oxygen at the end of the test was 7,5 mg/L. 100% saturation equals 9,05 mg/L at 20 °C, giving 83 % oxygen saturation for the value measured.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Remarks:
- all validity criteria fulfilled
- Conclusions:
- The study is regarded as a valid guideline study with certificated GLP compliance. According to the reported EC50 value (> 1000 mg/L) the test substance is not classified as toxic to aquatic invertebrates.
- Executive summary:
The acute toxicity to aquatic invertebrates of the test substance was tested according to OECD Guideline 202 (EU Method C.2) in a static freshwater test with Daphnia magna as test organisms. The study was conducted as a limit test under certificated GLP compliance. The test duration was 48 hours with a substance concentration of 1000 mg/L, which was selected based on the preliminary range-finding study. Potassium dichromate was used as reference substance. The validity criteria were met. At the end of the test, the concentration of the test item in the treatment was determined as 105 % of the measured concentration at the beginning of the test. Therefore the test item can be stated as stable under test conditions. For this reason, the results are given in nominal concentrations. The following deviation from the study plan was documented and assessed : The test temperature in the tests laid above the limit of 22°C (maximum 23,8°C). As the results of the study showed no inconsistencies, this deviation was stated as uncritical. The following results were determined for the test item MOPS HIGH PURITY in the acute toxicity test against Daphnia magna :
- 24h EC50i : > 1000 mg/L
- 24h EC100i : > 1000 mg/L
- 24h NOEL : 1000 mg/L
- 48h EC50i : > 1000 mg/L
- 48h EC100i : > 1000 mg/L
- 48h NOEL : 1000 mg/L
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