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EC number: 209-529-3 | CAS number: 584-08-7
- 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
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1994-0222 to 1994-02-24
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: FIFRA Guideline 72-1 (national standard, US, comparable to international guidelines)
- GLP compliance:
- yes
- Analytical monitoring:
- yes
- Vehicle:
- no
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Common name: Water flea (Daphnia magna)
- Source: Springborn Laboratories culture facility
- Age at study initiation (mean and range, SD): = 24 hours
- Feeding during test: not reported
ACCLIMATION: not reported
- Test type:
- static
- Water media type:
- freshwater
- Total exposure duration:
- 48 h
- Hardness:
- Total hardness as CaCO3: 180 mg/L
- Test temperature:
- 19 - 21°C
- pH:
- 8.1
- Nominal and measured concentrations:
- nominal test concentrations: 110, 180, 300, 510 and 850 mg a.i./L
measured concentrations: 120, 190, 320, 530 and 940 mg a.i./L - Details on test conditions:
- TEST SYSTEM: not reported, only exerpts of the study report available
TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water: Hard reconstituted water
- Alkalinity: Total alkalinity as CaCO3: 120 mg/L
- Conductivity: 500 μmhos/cm
- Culture medium different from test medium:not reported
OTHER TEST CONDITIONS
- Adjustment of pH: not reported
- Photoperiod: 16 hours light, 8 hours dark
- Light intensity: 50 footcandles at test initiation
EFFECT PARAMETERS MEASURED (with observation intervals if applicable) : mobility
TEST CONCENTRATIONS: not reported, only exerpts od study report available
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 430 mg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- act. ingr.
- Basis for effect:
- mobility
- Remarks on result:
- other: 95% CL: 190 - 940 mg a.i./L)
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 190 mg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- act. ingr.
- Basis for effect:
- mobility
- Reported statistics and error estimates:
- Binominal probability was used to calculate the EC50.
- Validity criteria fulfilled:
- not specified
- Remarks:
- only exerpts of study report available
- Conclusions:
- In a 48-h acute toxicity study according to national guideline FIFRA 72-2 the 48-h EC50 for Daphnia magna was 430 mg a.i./L (95% CL: 190 - 940 mg a.i./L). The NOEC, based on mortality, was 190 mg a.i./L.
- Executive summary:
The 48–hr-acute toxicity of potassium carbonate to Daphnia magna according to the national guideline FIFRA 72-2 was studied under static conditions. Daphnids were exposed at concentrations of 120, 190, 320, 530 and 940 mg a.i./L for 48 hr. Mortality/immobilization effects were observed. The 48 – hour EC50was 430 mg a.i./L. The 48 – hr NOEC based on mortality/immobilization was 190 mg a.i./L
This study is classified as reliable with restrictions and satisfies the guideline requirements for an acute toxicity study with freshwater invertebrates.
Results Synopsis
Test Organism Age ≤ 24 hours
Test Type (Static): national guideline FIFRA 72-2
LC50: 430 mg a.i./L 95% C.I. : 190 to 940 mg a.i./L
NOEC: 190.mg a.i./L
Endpoint(s) Effected: mortality/immobilisation
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1994-0222 to 1994-02-24
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: FIFRA Guideline 72-1 (national standard, US, comparable to international guidelines)
- GLP compliance:
- yes
- Analytical monitoring:
- yes
- Vehicle:
- no
- Test organisms (species):
- Daphnia pulex
- Details on test organisms:
- TEST ORGANISM
- Common name: Water flea (Daphnia pulex)
- Source: Springborn Laboratories culture facility
- Age at study initiation (mean and range, SD): = 24 hours
- Feeding during test: not reported
ACCLIMATION: not reported - Test type:
- static
- Water media type:
- freshwater
- Total exposure duration:
- 48 h
- Hardness:
- Total hardness as CaCO3: 54 mg/L
- Test temperature:
- 19 - 21°C
- pH:
- 7.7
- Nominal and measured concentrations:
- nominal test concentrations: 22, 38, 64 110, 180 and 300 mg a.i./L
measured concentrations: 23, 40, 67, 120, 190 and 310 mg a.i./L - Details on test conditions:
- TEST SYSTEM: not reported, only exerpts of the study report available
TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water: soft reconstituted water
- Alkalinity: Total alkalinity as CaCO3: 33 mg/L
- Conductivity: 200 μmhos/cm
- Culture medium different from test medium: not reported
OTHER TEST CONDITIONS
- Adjustment of pH: not reported
- Photoperiod: 16 hours light, 8 hours dark
- Light intensity: 50 footcandles at test initiation
EFFECT PARAMETERS MEASURED (with observation intervals if applicable) : mobility
TEST CONCENTRATIONS: not reported, only exerpts od study report available
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 200 mg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- act. ingr.
- Basis for effect:
- mobility
- Remarks on result:
- other: 95% CL: 120 - 310 mg/L
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 120 mg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- act. ingr.
- Basis for effect:
- mobility
- Reported statistics and error estimates:
- Binominal probability was used to calculate the EC50.
- Validity criteria fulfilled:
- not specified
- Remarks:
- no data only exerpts of study report available
- Conclusions:
- In a 48-h acute toxicity study according to national guideline FIFRA 72-2 the 48-h EC50 for Daphnia pulex was 200 mg a.i./L (95% CL: 120 - 310mg a.i./L). The NOEC, based on mortality, was 120 mg a.i./L.
- Executive summary:
The 48–hr-acute toxicity of potassium carbonate to Daphnia pulex according to the national guideline FIFRA 72-2 was studied under static conditions. Daphnids were exposed at concentrations of 23, 40, 67, 120, 190 and 310 mg a.i./L L for 48 hr. Mortality/immobilization effects were observed. The 48 – hour EC50was 200 mg a.i./L. The 48 – hr NOEC based on mortality/immobilization was 120 mg a.i./L
This study is classified as reliable with restrictions and satisfies the guideline requirements for an acute toxicity study with freshwater invertebrates.
Results Synopsis
Test Type (Static): national guideline FIFRA 72-2
LC50: 200 mg a.i./L 95% C.I. : 120 to 310 mg a.i./L
NOEC: 120 mg a.i./L
Endpoint(s) Effected: mortality/immobilisation
Referenceopen allclose all
Description of key information
48-h EC50 for Daphnia pulex was 200 mg a.i./L (95% CL: 120 - 310mg a.i./L). Despite of this, potassium carbonate is an alkaline substance, which dissociates completely to form potassium cations (K+) and inorganic carbon species. Depending on pH of the receiving waters CO2 is the predominant species at pH values below 6.35, while HCO3- is the predominant species at a pH in the range between 6.35 and 10.33 and CO3 2- is the predominant species at pH values above 10.33.
In the majority of the natural waters, pH levels are between 6 and 10. Thus HCO3- (pKa= 10.33) is the most important species for the buffer capacity.
Therefore the pH will remain within environmentally expected ranges.
Potassium carbonate is not expected to have an intrinsic toxic activity to aquatic organisms.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 200 mg/L
Additional information
In a 48-h acute toxicity study according to national standard (US), comparable to international guideline FIFRA 72 -1, the 48-h EC50 for Daphnia pulex and Daphnia magna were determined. Daphnia pulex was more sensitive than Daphnia magna. The 48-h EC50 was 200 mg a.i./L (95% CL: 120 - 310mg a.i./L) for Daphnia pulex, whereas the 48-h EC50 for Daphnia magna was 430 mg a.i./L (95% CL: 190 - 940 mg a.i./L). The NOEC, based on mortality, was 120 mg a.i./L and 190 mg a.i./L for Daphnia pulex and Daphnia magna, respectively.
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