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EC number: 240-948-4 | CAS number: 16903-35-8
- 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

Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 09 June 2016 to 01 July 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Key result
- Water solubility:
- > 1 076 g/L
- Conc. based on:
- test mat.
- Incubation duration:
- 48 h
- Temp.:
- 20 °C
- pH:
- 0.5
- Water solubility:
- > 1 100 g/L
- Conc. based on:
- test mat.
- Incubation duration:
- 24 h
- Temp.:
- 20 °C
- pH:
- 0.5
- Water solubility:
- > 1 188 g/L
- Conc. based on:
- test mat.
- Incubation duration:
- 72 h
- Temp.:
- 20 °C
- pH:
- 0.5
- Details on results:
- Preliminary test
The test item was dissolved immediately after addition of water. The preliminary visual experiments showed that the water solubility of the test item is > 10 mg/L.
Flask method
After the equilibration time no precipitate was observed in the flasks. As the test item was dissolved completely no further analytical determination was performed. The water solubility of the test item at 20 °C was determined to be > 1076 g/L. - Conclusions:
- The water solubility of the test item Tetrachlorogold(III) acid hydrate at a temperature of 20 °C was determined to be > 1076 g/L.
- Executive summary:
The water solubility of the test item tetrachlorogold(III) acid hydrateat a temperature of 20 °C was determined according to the OECD 105 and EU A.6 guidelines (Winkler 2016). This study is reliable without restrictions as it is GLP-compliant and was conducted according to standard guidelines.
The preliminary visual experiments showed that the water solubility of the test item is > 10 mg/L, therefore the main test was conducted using the flask method. In the main test, no precipitate was observed in the flasks after the equilibration time. As the test item was dissolved completely no further analytical determination was performed. The water solubility was calculated from the initial weight. The water solubility of the test item at 20 °C was determined to be > 1076 g/L.
Reference
Table1: Results of the preliminary visual estimation of the water solubility
Amount of test item / mg |
Added volume of dist. water / mL |
Total volume / mL |
Appearance of mixture |
105.8 |
0.1 |
0.1 |
dissolved |
Table2: Water solubility experiments of the test item
Experiment |
24 h experiment |
48 h experiment |
72 h experiment |
Blank experiment (72 h) |
Amount of test item / g |
11.0 |
10.8 |
11.9 |
- |
Amount of demineralized water / ml |
10 |
10 |
10 |
10 |
Stirring time at 30 °C / h |
24 |
48 |
72 |
72 |
pH at 23 - 24 °C |
0.5 |
0.5 |
0.5 |
5.8 |
Water solubility / g/L |
> 1100 |
> 1076 |
> 1188 |
- |
Description of key information
Tetrachloroauric acid is very soluble in water. The water solubility of the test item at 20 °C is > 1076 g/L.
Key value for chemical safety assessment
- Water solubility:
- 1 076 g/L
- at the temperature of:
- 20 °C
Additional information
The water solubility of the test item tetrachlorogold(III) acid hydrate at a temperature of 20 °C was determined according to the OECD 105 and A.6 guidelines (Winkler 2016).
The preliminary visual experiments showed that the water solubility of the test item is > 10 mg/L, therefore the main test was conducted using the flask method. In the main test, no precipitate was observed in the flasks after the equilibration time. As the test item was dissolved completely no further analytical determination was performed. The water solubility was calculated from the initial weight. The water solubility of the test item at 20 °C was determined to be > 1076 g/L. This study is reliable without restrictions as it is GLP-compliant and was conducted according to standard guidelines, therefore is suitable for use as a key study for this endpoint.
Information on water solubility is also available from two peer reviewed handbooks (O’Neil 2006, Lide 2008). Although the methods used are not known the handbooks are considered reliable and suitable for use as supporting studies for this endpoint. Both handbooks report the substance to be 'very soluble'.
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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