Registration Dossier
Registration Dossier
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EC number: 223-289-7 | CAS number: 3811-04-9
- 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

Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 1.15 mg/L
- Assessment factor:
- 10
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 1.15 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 115 mg/L
- Assessment factor:
- 10
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 4.14 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 4.14 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 3.83 mg/kg soil dw
- Assessment factor:
- 100
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 12.78 mg/kg food
Additional information
Tests performed with sodium chlorate can be used in this dossier, because the toxicity of the test substance is caused by the chlorate ion. In water and soil sodium and potassium are naturally present and the amounts added with the test substance are not considered to have an impact on the total concentration and on the test result, therefore the counter ion present is not relevant for the test result.
All PNECs are based on studies performed with sodium chlorate and on a molecular weight basis converted to potassium chlorate.
Conclusion on classification
The harmonised classification of the substance is Aquatic Chronic 2 according to Annex VI of Regulation (EC) No 1272/2008 (CLP Regulation, ATP01).
This harmonised classification is not in agreement with the data presented in the dossier as the substance should not be classified instead of Aquatic Chronic 2 based on data from the dossier.
- The substance is not readily biodegradable,
- The lowest chronic EC50 value is higher than 1 mg/L (EC50= 15mg/L, Nitzschia closterium, marine algae; see section 6.1.5)
- The lowest chronic EC10/NOEC value is comprised between 1 and 10 mg/L (7d-NOErC = 10 mg/L, aquatic plants:Lemna minor, section 6.1.6)
As the substance is not readily biodegradable and the lowest NOEC is higher than 1 mg/L, the substance should not be classified for aquatic chronic hazard.
A declassification dossier for aquatic chronic 2 for potassium chlorate has been submitted under the registry of CLH intentions to ECHA by Sweden in 2019 : https://echa.europa.eu/registry-of-clh-intentions-until-outcome/-/dislist/details/0b0236e1835aa465
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.

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