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EC number: 249-769-6 | CAS number: 29676-71-9
- 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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- 2-aminothiazol-4-acetic acid
- EC Number:
- 249-769-6
- EC Name:
- 2-aminothiazol-4-acetic acid
- Cas Number:
- 29676-71-9
- Molecular formula:
- C5H6N2O2S
- IUPAC Name:
- (2-amino-1,3-thiazol-4-yl)acetic acid
- Test material form:
- solid: particulate/powder
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): Totnes sewage treatment works, Totnes, Devon, UK.
- Storage conditions: Aerated at room temperature
- Storage length: Not specified.
- Preparation of inoculum for exposure: Seven days prior to the exposure start the activated sludge was centrifuged, washed and resuspended in the test medium and the solids concentration determined. This sludge was then diluted in medium, added to test bottles and stirred until required for use.
- Concentration of sludge: 30 mg/L (27 mg/L in toxicity controls)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 100 mg/L
- Based on:
- COD
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- TEST CONDITIONS
- Composition of medium: Standard mineral medium as per the relevant OECD guideline
- Additional substrate: None
- Solubilising agent (type and concentration if used): None
- Test temperature: 22 +/- 2°C
- pH: 7.4 to 7.5 in the test substance bottles
- pH adjusted: No
- Aeration of dilution water: Yes (continuous stirring)
- Suspended solids concentration: 30 mg/L
- Continuous darkness: yes (amber glass used)
TEST SYSTEM
- Culturing apparatus: Glass BOD bottles
- Number of culture flasks/concentration: triplicate
- Method used to create aerobic conditions: Continuous stirring
- Measuring equipment: Oxitop respirometers
- Test performed in closed vessels due to significant volatility of test substance: Test is conducted closed as standard
- Test performed in open system: No
- Details of trap for CO2 and volatile organics if used: Absorped by potassium hydroxide solution in the neck of the flasks.
SAMPLING
- Sampling frequency: Automatically sampled every 112 minutes.
- Sampling method: Oxitop bottles contain pressure sensors automaticaaly detect O2 consumption by a reduction in pressure.
- Sterility check if applicable: Not applicable
- Sample storage before analysis: Not applicable
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
- Preliminary study:
- Not applicable
- Test performance:
- The results of the reference substance showed that 77% biodegradation was observed after 28 days which confirmed the suitability of the assay. The toxicity control also showed that the test substance did not inhibit biodegradation and the oxygen uptake of controls was below the prescribed level as per the OECD guidelines.
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- < 5
- Sampling time:
- 28 d
- Details on results:
- The results showed the biodegradation of the test substance was minimal (< 5%)
BOD5 / COD results
- Results with reference substance:
- 77% biodegradation of sodium benzoate was observed at 28 days.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- As less than 5% biodegradation was observed after 28 days of contact time, the substance is considered not to be readily biodegradable under the conditions employed in the test.
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.
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