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Diss Factsheets
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EC number: 231-913-4 | CAS number: 7778-77-0
- 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
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Endpoint summary
Administrative data
Description of key information
Additional information
Typically the purity of potassium dihydrogenorthophosphate is Ca. 80% (dry weight, after excluding water).
The substance may contain the impurities indicated below, derived from the production process, each one present at the concentrations indicated below:
Dipotassium hydrogenorthophosphate - # EINECS : 231-834-5: <15%
Potassium sulphate - # EINECS : 231-915-5:<10%
Potassium chloride (KCl) - #EINECS: 231-211-8: <5%
Calcium hydrogenorthophosphate - #EINECS:231-826-1:<5%
Other inorganic phosphates or other inorganic substances related to the registered substance which do not significantly affect the toxicological and ecotoxicological properties of the registered substance are present in quantities of <5% in total. There are no hazardous impurities present within the substance at levels >1%.
Potassium dihydrogenorthophosphate has a reported boiling point of Ca. 253°C, a boiling point of >450°C. The vapour pressure of the test material has been determined to be 4.5 x 10-15 Pa at 25ºC.
Potassium dihydrogenorthophosphate is considered to be very soluble ( 208 g/l of solution at 20.0 ± 0.5°C). The pH of this solution, observed in the water solubility study, was pH 4.2 -4.5. The water solubility study conducted on potassium dihydrogenorthophosphate made the following observations:The effect of temperature over the range 10 to 30°C has been considered not to have had a significant influence on the observed solubility of the test material (range 173 to 239 g/l).
An assessment of the solubility of the test material over the environmentally relevant pH range of 4 to 9 gave solubility results and final solution pH’s similar to those obtained using unbuffered water. Thus, it can be anticipated that the water solubility of the test material over the pH range 4 to 9 would be constant, essentially due to the low buffering activities seen in the environment.
Potassium dihydrogenorthophosphate is not considered to possess any of the following hazardous physico-chemical properties: autoflammability and/or self-ignition, flammability, explosiveness and oxidising properties.
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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