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EC number: 245-022-3 | CAS number: 22473-78-5
- 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
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
Experimental data for tetraammonium ethylenediaminetetraacetate is only available in aqueous solution. Read across to editic acid was done instead, as a vapour pressure determinedfor the aqueous solution would result in values reflecting the vapour pressure of H2O.
The vapour pressure of edetic acid was determined to be 2E-012 hPa at 25°C according to Riedel and Plank.
Key value for chemical safety assessment
Additional information
As the substance is only stable and handled in aqueous solution, no experimental data with the pure tetraammonium ethylenediaminetetraacetate is available. Measurements with the aqueous solutions show a vapour pressure of 39.39 hPa at 20°C (see supporting study: BASF, 2010). Since the vapour pressure of H4EDTA is with respect to (NH4)4EDTA neglibly low, the determined vapour pressure represents a vapour consisting of solely H2O and NH3. Due to the fact that a 50 w% solution (NH4)3HEDTA exerts a neglibly low partial pressure of ammonia at 20°C, we conclude that max 1 eq NH3 is released and the vapour in equilibrium with 50% (NH4)4EDTA is at most the vapour in equilibrium with a 2.4* w% solution NH3 in H2O (50 w% * M (NH3) / M (NH4EDTA) = 50 w% * 17 / 380 = 2.4 w%).
For the vapour pressure of tetraammonium ethylenediaminetetraacetate, read across to the free editic acid was done (see key study). The vapour pressure determined for the acid form of EDTA represents also a worst case (highest) value for its ammonium salts as it is belived that only the free acid can evaporate. In conclusion the value determined for the free acid will also be used for the exposure calculations of the ammonium salts in the chemical safety report.
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