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Diss Factsheets
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EC number: 231-975-2 | CAS number: 7783-03-1
- 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
Endpoint summary
Administrative data
Description of key information
Toxicity to Soil Macroorganisms: No sufficiently reliable studies were identified for tungstic acid toxicity in soil macroorganisms; therefore, read-across to sodium tungstate was used The 56-day NOEC for earthworms (Eisenia fetida) found in a test conducted according to OECD 222, under GLP standards, and with analytical verification of the test concentrations was ≥1000 mg sodium tungstate/kg soil dw (586 mg W/kg). Other studies with Eisenia fetida were not considered for the risk characterisation, as they were found to be less reliable.
Toxicity to Terrestrial Plants: No sufficiently reliable studies were identified for tungstic acid toxicity in plants; therefore, read-across to sodium tungstate was used. In a Seedling Emergence and Seedling Growth Test using Avena sativa, Raphanus sativus and Lactuca sativa and testing sodium tungstate, Lactuca sativa (lettuce) was found to be the most sensitive species with an identified NOEC of 37 mg/kg soil d. w. sodium tungstate (nominal) (approximately 22 mg W/kg soil) based on: % Emergence, Individual Shoot Height, and Individual Shoot Weight.
Toxicity to Soil Microorganisms: No sufficiently reliable studies were identified for tungstic acid toxicity in soil microorganisms; therefore, read-across to sodium tungstate was used. In both a Carbon and a Nitrogen Transformation Test using sodium tungstate the 28-day EC50 was found to be > 1000 mg sodium tungstate/kg soil d.w. (approximately 586 mg W/kg soil d.w.).
Additional information
No toxicity data for soil microorganisms (except arthropods), terrestrial plants, and soil microorganisms are available for tungstic acid (target substance). However, toxicity data on the source substances, sodium tungstate and tungsten metal, are available and are used for read-across. For more details on the read-across rationale for sodium tungstate and tungsten metal, refer to the attached description of the read-across approach.
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.
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