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EC number: 244-214-4 | CAS number: 21109-95-5
- 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
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: no guideline followed, no sufficient experimental details or details on test material, document represent oral presentation
Data source
Reference
- Reference Type:
- review article or handbook
- Title:
- Kinetics of chemical sulfide oxidation under high dissolved oxygen levels.
- Author:
- Sharma, K. & Yuan, Z.
- Year:
- 2 010
- Bibliographic source:
- Submitted for Oral Presentation, 6th International Conference on Sewer Processes and Networks, November 7th to 10th, 2010.
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The chemical sulfide oxidation was determined by experiments with domestic wastewater (filtered through 5-micron filter). Therefore pH, DO [dissolved oxygen] (via UV/VIS-based spectrometer) and dissolved sulfide measurement (via ion chromatography) were measured in a 0.75 L closed vessel at 22°C and constant pH level about 7.5.
Two series of experiments were conducted to investigate the effect of DO on the rate of chemical sulfide oxidation: first with relatively constant sulfide concentraitio and varied DO; second with varied initial sulfide and varied DO.
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Sulfide
- IUPAC Name:
- Sulfide
- Test material form:
- not specified
- Details on test material:
- - Other: domestic wastewater was used
Constituent 1
Results and discussion
Any other information on results incl. tables
The results suggested, that H2S oxidation rate was independent of the DO concentration at a DO level above 5 mg/L, below which the H2S oxidation rate decreased with decreasing DO level. The oxidation rate of H2S was situated between 0.27 and 0.46 mg S/L, and this for dissolved oxygen levels between 0.5 and 14.5 mg/L (see table 1 below).
A significant amount of thiosulfate was produced during the experimet, for this reason thisulfate was assumed to be the end product of sulfitde oxidation.
Table 1: Sulfide oxidation at different DO levels
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Applicant's summary and conclusion
- Conclusions:
- The oxidation rate of H2S was situated between 0.27 and 0.46 mg S/L, and this for dissolved oxygen levels between 0.5 and 14.5 mg/L and thiosulfate was assumed to be the end product of sulfide oxidation.
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