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EC number: 234-919-5 | CAS number: 12040-43-6
- 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:
- Jun. 4, 2019 - Jan. 31, 2020, experimental phase: Jun. 11 - Aug. 7, 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Version / remarks:
- 1995
- Deviations:
- no
- Remarks:
- All filtrated test solutions showed a slightly Tyndall effect (i.e. a laser beam was slightly scattered when transmitted through the liquid). This was considered as uncritical as the concentration of undissolved particles was quantified via Tyndall device
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Version / remarks:
- 2014
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht Rheinland-Pfalz
- Type of method:
- flask method
- Specific details on test material used for the study:
- Name: Silicic acid, magnesium aluminium sodium salt
Batch no.: 201810LC007
Appearance: white fluffy powder
Composition: Sodium; Magnesium; Aluminium; Silica
CAS No.: 12040-43-6
EC-No.: 234-919-5
Purity: >95%
Homogeneity: homogeneous
Specific surface area: 57.9 m²/g - Key result
- Water solubility:
- ca. 902 mg/L
- Loading of aqueous phase:
- 50 g/L
- Incubation duration:
- ca. 24 - ca. 144 h
- Temp.:
- 20.5 °C
- pH:
- ca. 10 - ca. 10.17
- Conclusions:
- Assuming that the dissolution products expressed as Si(OH)4, Mg(OH)2, NaOH and Al(OH)3, which is very reasonable, the total dissolution rate can be calculated to approx. 902 mg/L
- Executive summary:
The solubility of Silicic acid, magnesium aluminium sodium salt in water was determined by measurement of Silicon (Si), Magnesium (Mg), Aluminium (Al) and Sodium (Na) per ICP-OES in filtrated test solutions with the nominal concentration 50 g/L
Reference
The concentrations of Silicon (Si), Magnesium (Mg), Aluminium (Al) and Sodium (Na) at
20.0 ± 0.5 °C in the nominal load 50 g/L were stated in the following table:
Table 3.2-a Summary Si, Mg, Na and Al
Element |
Concentration [mg/L] |
Standard Deviation [mg/L] |
Relative Standard Deviation [%] |
Concentration [kg/m³] |
Si |
188.9 |
4.9 |
2.6 |
0.189 |
Mg |
11.64 |
0.48 |
4.1 |
0.01164 |
Na |
130.5 |
5.18 |
4.0 |
0.131 |
Al |
0.361 |
0.069 |
19.3 |
0.000361 |
Assuming that the dissolution products expressed as Si(OH)4, Mg(OH)2, NaOH and Al(OH)3, which is very reasonable, the total dissolution rate can be calculated to approx. 902 mg/L not considering the standard derivation for the nominal concentration 50 g/L.
Description of key information
The solubility of Silicic acid, magnesium aluminium sodium salt in water was determined by measurement of Silicon (Si), Magnesium (Mg), Aluminium (Al) and Sodium (Na) per ICP-OES in filtrated test solutions with the nominal concentration 50 g/L.
Assuming that the dissolution products expressed as Si(OH)4, Mg(OH)2, NaOH and Al(OH)3, which is very reasonable, the total dissolution rate can be calculated to approx. 902 mg/L
Key value for chemical safety assessment
- Water solubility:
- 902 mg/L
- at the temperature of:
- 20.5 °C
Additional information
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