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EC number: 233-915-0 | CAS number: 10433-41-7
- 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:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Potassium dimethyl 5-sulphonatoisophthalate
- EC Number:
- 233-915-0
- EC Name:
- Potassium dimethyl 5-sulphonatoisophthalate
- Cas Number:
- 10433-41-7
- Molecular formula:
- C10H10O7S.K
- IUPAC Name:
- potassium 3,5-bis(methoxycarbonyl)benzene-1-sulfonate
- Test material form:
- solid: particulate/powder
Constituent 1
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source of test material: sponsor
- purity: 96.6%
- Solubility in water: 14 g/L
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At room temperature in the dark
Study design
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Details on inoculum:
- The inoculum was derived from the secondary eflluent of Shanghai Longhua Sewage Plant. The inoculum was pre-conditioned by aerating the secondary eflluent, without other treatment or addition, for 5-7 days at the test temperature of 20 ± 1°C. Control microbe counted at the range of 104-106 orgs/L.
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 2 mg/L
- Based on:
- test mat.
- Details on study design:
- lt was important that the bottles were thoroughly clean before use. First of all, add to the empty bottle 5-10 ml of a wash solution (e.g. 2.5 g iodine plus 12.5g potassium iodide per litre of 1 % w/v sulfuric acid) shaking well to coat the bottle walls. Leave to stand for 15 min, pour off the solution and rinse thoroughly with tap water and finally deionised water.
Strongly aerate mineral medium for at least 20 minutes and stand for 20 h at the test temperature. Determine the concentration of dissolved oxygen for control purposes.
Prepare parallel groups of BOD bottles for the determination of the test and reference substances in simultaneous experimental series.
Add fully-aerated mineral medium to BOD bottles so that they were one-third full, then add sufficient of the stock solutions of the test and reference substances to separate BOD bottles.
Reference substance
- Reference substance:
- laurylsulfonate
Results and discussion
% Degradationopen allclose all
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0.7
- Sampling time:
- 7 d
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 1.16
- Sampling time:
- 14 d
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 1.16
- Sampling time:
- 21 d
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 1.39
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- Based on the ThOD of potassium dimethyl 5-sulphonatoisophthalate (1.08 mg O2/mg), the average percent degradation of potassium dimethyl 5-sulphonatoisophthalate on days 7, 14, 21 and 28 was 0.70%, 1.16%, 1.16% and 1.39%, respectively.
- Executive summary:
The biodegradability of potassium dimethyl 5-sulphonatoisophthalate was determined using the Closed Bottle Test Method. In the closed bottle test, inoculated mineral medium was dosed with a known amount of test substance as the nominal sole source of organic carbon. Degradation was followed by the analysis of dissolved oxygen over a 28-day test period. The test contained an inoculum control group, a reference group, and a treatment group. Each group contained ten replicate test chambers. The inoculum control was used to measure the oxygen uptake of the inoculum and was not dosed with a carbon source. The reference chambers were dosed with sodium lauryl sulfate, a substance known to be biodegradable, at a nominal concentration of 2 mg/L. The treatment group test chambers were used to evaluate the test substance at a nominal concentration of 2 mg/L. Measurements of dissolved oxygen were performed on two chambers from the control, reference, and treatment groups on days 0, 7, 14, 21 and 28.
The results indicated that the inoculum was active by degrading the reference substance, sodium lauryl sulfate, within the acceptable range (ie 60% within 14 days). The percent biodegradation of potassium dimethyl 5-sulphonatoisophthalate was calculated as 0.70%, 1.16%, 1.16% and 1.39% on days 7, 14, 21 and 28.
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