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EC number: 235-227-6 | CAS number: 12136-45-7
- 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

Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to microorganisms
- Type of information:
- other: Published data
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- other: Environment Canada EPS 1/RM/24: biological test method: toxicity test using luminescent bacteria
- Principles of method if other than guideline:
- Microtox Toxicity Analyser system, Microbics Corporation (Carlsbad CA). Test substance in added to cells suspensions and light readings are measured before and 15 minutes after sample addition. Light loss is proportional to toxicity of the sample, with 50% light loss being defined as the EC50.
- GLP compliance:
- not specified
- Analytical monitoring:
- not specified
- Details on sampling:
- - concentrations: 10,,20,30,40 mg/l
- Sampling method: 4g of test substance was extracted in 20 ml of saline. This sample was weigehed into 2% NaCl to make a 1% (10g/l) solution. This sample was diluted into a concentration range where a normal dose response was observed with LBT - Vehicle:
- no
- Test organisms (species):
- Photobacterium phosphoreum
- Details on inoculum:
- - Laboratory culture:B-NRRL 11177
- Initial biomass concentration:50g/l - Test type:
- other: closed test vial
- Water media type:
- saltwater
- Limit test:
- no
- Total exposure duration:
- 15 min
- Test temperature:
- 15°C
- pH:
- 7.8
- Dissolved oxygen:
- 9.1 mg/l
- Salinity:
- 2% NaCl
- Nominal and measured concentrations:
- nominal concentrations: 10,,20,30,40 mg/l (recovery: 98-103%)
- Details on test conditions:
- TEST SYSTEM
- Test vessel:
- Type (delete if not applicable):closed
- No. of organisms per vessel:10µl of cell suspension
EFFECT PARAMETERS MEASURED (with observation intervals if applicable) : reduction in light - Reference substance (positive control):
- yes
- Remarks:
- sodium hypochlorite
- Duration:
- 15 min
- Dose descriptor:
- EC50
- Effect conc.:
- 22 mg/L
- Nominal / measured:
- estimated
- Basis for effect:
- other: light reduction
- Remarks on result:
- other: the luminiscent bacteria toxicity test gives following result: 15 minutes EC50 = 22 mg/L for photobacterium phosphoreum
- Validity criteria fulfilled:
- not specified
- Conclusions:
- The luminiscent bacteria toxicity test gives following result: 15 minutes EC50 = 22 mg/L for photobacterium phosphoreum.
When Potassium oxide is hydrated is produced Potassium hydroxide. Therefore, the health effects of Potassium hydroxide need to be considered in the assessment of Potassium oxide
Reference
Description of key information
The luminiscent bacteria toxicity test gives following result: 15 minutes EC50 = 22 mg/L for photobacterium phosphoreum.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 22 mg/L
- EC10 or NOEC for microorganisms:
- 4.4 mg/L
Additional information
The luminiscent bacteria toxicity test gives following result: 15 minutes EC50 = 22 mg/L for photobacterium phosphoreum.
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