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EC number: 231-912-9 | CAS number: 7778-74-7
- 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
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- 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:
- no guideline followed
- Principles of method if other than guideline:
- The materials and methods are well described in the publication.
- GLP compliance:
- no
- Type of method:
- other: exposure of soils to low and high perchlorate concentrations, determination of the perchlorate concentration by ion chromatography
- Media:
- soil
- Specific details on test material used for the study:
- Low lever exposure:
Triplicate 5.0 g portions of each soil were dispensed into 50 mL centrifuge tubes. Deionized water (25.0 mL) and a solution (670 µg/mL) of ammonium perchlorate (25.0 µL) were added. The resulting solution of NH4CIO4(aq) contained 670 ng/mL (6.8 µM) perchlorate. The tubes were capped and rotated end-over-end for 2 days at ambient temperature to permit equilibration. After centrifuging the tubes at 3000g for 90 - 120 min the centrifugates were decanted into sterile tubes immediately. The tubes were capped and stored at 5 °C pending analysis.
High level exposure:
Triplicate 5.0 g portions of each soil were dispensed into 250 mL centrifuge tubes. Deionized water (250 mL) and a 5.0 M solution of sodium perchlorate (10.0 mL) were added. The resulting solution of NH4CIO4(aq) containcd 20 g/L (0.20 M) perchlorate. The tubes were capped and rotated end-over-end for at least 3 days at ambient temperature to permit equilibration. The tubes were centrifuged at 3000-3500g for 90 - 120 min once a day. - Radiolabelling:
- no
- Key result
- Type:
- Koc
- Value:
- <= 100 dimensionless
- Conclusions:
- Based on the tests on 38 different soils it can be stated that perchlorate salts do not sorb to soils.
No Koc is reported in the study. - Executive summary:
Low lever exposure:
For the study 38 different soils, minerals or dusts were tested. 5.0 g of each material were subjected to 25 mL of an 6.8 µM aqueous ammonium perchlorate solution (containing 670 ng/mL perchlorate). More than 90% of the perchlorated remained in the aqueous phase (determined by ion chromatography).
High level exposure:
For the determination of forced perchlorate anion exchange (PAEC) 5.0 g of each material were subjected to 250 mL of a 0.20 M aqueous sodium perchlorate solution. The samples were washed with deionized water until perchlorate concentrations fell below 20 ng/mL. After drying the residua were leached with 15 mL of 0.1 M sodium hydroxide solution. The calculated PAEC based on the determination of perchlorate concentraion in the leachates by ion chromatography ranged from 4 to 150 nmol/g.
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Justification for type of information:
- EPI Suite is accepted as program for calculating the absorption coefficient.
- Principles of method if other than guideline:
- The value was calculated using KOCWIN v2.00.
Experimental determination is technically not feasible as potassium perchlorate is inorganic. - Type of method:
- other: calculation
- Media:
- soil
- Radiolabelling:
- no
- Key result
- Type:
- Koc
- Value:
- 42.89 L/kg
- Temp.:
- 20 °C
- Key result
- Type:
- log Koc
- Value:
- 1.642 dimensionless
- Temp.:
- 20 °C
- Conclusions:
- Calculation of Koc made with KOCWIN v2.00 delivers a Koc of 43.89
Referenceopen allclose all
CAS Number: 7778-74-7
SMILES : O(K)CL(=O)(=O)=O
CHEM : POTASSIUM PERCHLORATE
MOL FOR: CL1 O4 K1
MOL WT : 138.55
Soil Adsorption Coefficient (KOCWIN v2.00):
*** WARNING: Inorganic Coumpound (Outside Estimation Domain) **
*** WARNING: Estimation NOT VALID **
Koc : 43.89 L/kg (MCI method)
Log Koc: 1.642 (MCI method)
Koc : 5.862E-007 L/kg (Kow method)
Log Koc: -6.232 (Kow method)
Description of key information
Based on the tests on 38 different soils it can be stated that perchlorate salts do not sorb to soils. Potassium perchlorate is considered not to sorb to soils.
Koc and Log Koc are determined by calculation using KOCWIN v2.00.
Key value for chemical safety assessment
- Koc at 20 °C:
- 43.89
Additional information
[LogKoc: 1.642]
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