Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 247-728-7 | CAS number: 26479-35-6
- 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 aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
A 72-hour study testing potassium allophonate indicates that it is not acutely toxic to Pseudokirchneriella subcapitata (green algae). The EC50s for growth rate and yield were greater than the highest tested concentration (100 mg/L nominal, 27.4 mg/L geometric mean) for P. subcapitata. The No Observed Effect Concentrations (NOEC) for both growth rate and yield were greater than or equal to 100 mg/L (nominal) and 27.4 mg/L (measured geometric mean).
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 27.4 mg/L
- EC10 or NOEC for freshwater algae:
- 27.4 mg/L
Additional information
During the 72 -hour test with Pseudokirchneriella subcapitata (green algae), rapid hydrolysis of potassium allophonate led to all measured concentrations less than the minimum quantifiable limit (MQL) at 72 hours (ABC Laboratories, 2012d). All endpoints were calculated on nominal (6.3, 13, 25, 50 and 100 mg/L) and geometric mean potassium allophonate concentrations (0.890, 1.68, 5.26, 12.6, and 27.4 mg/L). At 72 hours, mean control algal cell density was 71.3 x10^4 cells/mL, while potassium allophonate concentrations ranged from 72.5x10^4 to 82.9x10^4 cells/mL. Percent inhibition of algal growth at 72 hours ranged from -2% to -16% from the control. No statistically-significant reductions in growth rate were detected at any tested concentration; therefore, both the 50% effect concentration based on growth rate (ErC50) and the NOEC were > 27.4 mg/L based on mean measured concentrations. In addition, no statistically-significant reductions in yield (biomass) were detected at any tested concentration; therefore, both the 50% effect concentration based on yield (EyC50) and the NOEC were > 27.4 mg/L based on mean measured concentrations. Due to the lack of inhibition of algal growth, potassium allophonate was shown to not be toxic to P. subcapitata in this test.
References:
ABC Laboratories, Inc. 2012d. Potassium Allophonate: Growth Inhibition Test with the Unicellular Green Alga, Pseudokirchneriella subcapitata. Testing laboratory: ABC Laboratories, 7200 E. ABC Lane, Columbia, Missouri, 65202. Owner Company: Kerr Fire Fighting Chemicals, Ashcroft Rd., Knowsley Industrial Park, Kirby, Liverpool L33 7TS, England. Company study no.: 68125. Report date: 2012-10-16.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.