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EC number: 285-561-1 | CAS number: 85117-09-5 Mixtures of chemical substances produced by burning (below 1200°C) natural variants of limestone or chalk containing from 10 to 20%, or more, of clayey or siliceous materials which are predominantly SiO2, Al2O3 and iron oxide. Consist primarily of 2CaOsb.2, Ca(OH)2, CaO and 2CaOsb.2O3. 3CaO.2SiO2, 4CaOsb.2O3. Fe2O3, 2CaOsb.2O3sb.2, CaCO3 and SiO2 may also be included.
- 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:
- 2010-03-05 to 2010-05-21
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- yes
- Remarks:
- High purity water was used instead of glass-double distilled water; No glass was used in critical sample preparation and handling steps
- Principles of method if other than guideline:
- Due to the necessity to analyse for silicon, approximately 18 MΩ high purity water was used as an alternative to glass-double distilled water during the preliminary test and the definitive test whilst monitoring minor components/impurities. It was not appropriate to use water prepared in a glass apparatus due to potential interferences on analysis and in addition, the use of glass was also excluded from critical sample preparation and handling steps. This deviation was not considered to impact on the validity of the determinations, but was an essential step to generate reliable dissolved silicon data. Glass-double-distilled water was used for the definitive test calcium determination.
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- signed 2009-11-26
- Type of method:
- flask method
- Water solubility:
- 1 010 mg/L
- Temp.:
- 20 °C
- pH:
- 12.3
- Remarks on result:
- other: This is the water solubility of calcium as determined in the study. Variation of temperature was ± 0.5 °C.
- Water solubility:
- 0.115 mg/L
- Temp.:
- 20 °C
- pH:
- 12.3
- Remarks on result:
- other: This is the water solubility of iron as determined in the study. Variation of temperature was ± 0.5 °C.
- Water solubility:
- 0.305 mg/L
- Temp.:
- 20 °C
- pH:
- 12.3
- Remarks on result:
- other: This is the water solubility of silicon as determined in the study. Variation of temperature was ± 0.5 °C.
- Water solubility:
- 0.158 mg/L
- Temp.:
- 20 °C
- pH:
- 12.3
- Remarks on result:
- other: This is the water solubility of aluminium as determined in the study. Variation of temperature was ± 0.5 °C.
- Details on results:
- The preliminary test results indicated that, with exception of one sample (nominal lading rate of 1.0 g/L), no loading rate dependent solubility characterisitcs were observed. For the one sample, elevated alumnium and silicon concentrations were detected, but it was immediatley obvious that the sample solution was not saturated with respect to the dominant element, calcium. Therefore, this loading rate was not suitable for the definitive test determination, which should be prepared typically at five times the concentration required to achieve saturation. The reduced calcium concentration of this sample, due to insufficient test material being present to achieve saturation, possibly allowed the additional dissolution of the aluminium and silicon containing components.
For the definite test (minor components and impurites) an increasing trend in solubilised alumnium concentration with initial saturation time was observed. However, as solubility remained low (<0.2 mg/l) even after an initial saturation period of 72 hours at 30 °C, no additional testing was considered necessary. - Conclusions:
- The water solubility has been determined for four components of lime (chemical) hydraulic. The four components and the water solubility of these are as follows:
1) 1010 mg calcium/L at 20.0 ± 0.5 °C
2) 0.158 mg aluminium/l at 20.0 ± 0.5 °C
3) 0.305 mg silicon/l at 20.0 ± 0.5 °C
4) 0.115 mg iron /l at 20.0 ± 0.5 °C.
An exact water solubility of lime (chemical) hydraulic can not be determined since the molecular formula of the test item is unknown. However, since calcium is the main component of the test material it can be assumed that the test item is soluble in water. - Endpoint:
- water solubility
- Type of information:
- other: Study used in support of read-across of pH-related health effects (acute and repeated-dose inhalation toxicity, skin and eye irritation) from CaO to calcined dolomite.
- Adequacy of study:
- supporting study
- Study period:
- 2010-03-23 to 2010-04-30
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Version / remarks:
- , 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- signed 2009-11-26
- Type of method:
- flask method
- Water solubility:
- 956 mg/L
- Temp.:
- 20 °C
- pH:
- 12.3
- Remarks on result:
- other: This is the water solubility of calcium. The temperature was ± 0.5 °C.
- Water solubility:
- 1 337.6 mg/L
- Temp.:
- 20 °C
- pH:
- 12.3
- Remarks on result:
- other: The water solubility of CaO was not stated in the study report. Therefore the value was recaluted from the water solubility value of calcium as stated in the study report.
- Details on results:
- No further relevant information was stated.
- Conclusions:
- Interpretation of results (migrated information): soluble (1000-10000 mg/L)
The water solubility of the test item and /or degradation products has been determined to be 956 mg calcium/l of solution at 20.0 ± 0.5 °C (recalculated value for calcium oxide: 1337.6 mg/l). - Executive summary:
The water solubility of calcium oxide was tested by measuring the concentration calcium ions in saturated solution. The solubility of calcium oxide was recalculated from the water solubility value of calcium, which was stated in the study report.
- Endpoint:
- water solubility
- Type of information:
- other: Study used in support of read-across of pH-related health effects (acute and repeated-dose inhalation toxicity, skin and eye irritation) from Ca(OH)2 to lime (chemical) hydraulic.
- Adequacy of study:
- supporting study
- Study period:
- 2010-03-23 to 2010-04-30
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Version / remarks:
- 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- signed 2009-11-26
- Type of method:
- flask method
- Water solubility:
- 999 mg/L
- Temp.:
- 20 °C
- pH:
- 12.4
- Remarks on result:
- other: This is the water solubility for calcium as determined in the test report. The temperature was maintained within ± 0.5 °C.
- Water solubility:
- 1 844.9 mg/L
- Temp.:
- 20 °C
- pH:
- 12.4
- Remarks on result:
- other: The water solubility of Ca(OH)2 was not stated in the study report. Therefore the value was recaluted from the water solubility value of calcium as stated in the study report.
- Details on results:
- No further relevant information was stated.
- Conclusions:
- Interpretation of results (migrated information): soluble (1000-10000 mg/L)
The water solubility of the test item has been determined to be 999 mg calcium/L of solution at 20.0 ± 0.5 °C (recalculated value for calcium dihydroxide: 1844.9 mg/l). - Executive summary:
The water solubility of calcium dihydroxide was tested by measuring the concentration calcium ions in saturated solution.
The solubility for calcium dihydroxide was recalculated from the water solubility value of calcium, which was stated in the study report.
Referenceopen allclose all
Description of key information
The water solubility has been determined for four components of lime (chemical) hydraulic (study result, modified EU A.6 method). The water solubilities of these four elements were determined as follows:
1) 1010 mg calcium/L at 20.0 ± 0.5 °C
2) 0.158 mg aluminium/l at 20.0 ± 0.5 °C
3) 0.305 mg silicon/l at 20.0 ± 0.5 °C
4) 0.115 mg iron /l at 20.0 ± 0.5 °C.
An exact value for the water solubility of lime (chemical) hydraulic can not be determined since the molecular formula of the test item is unknown. However, since calcium is the main component of the test material it can be assumed that the test item is soluble in water.
Key value for chemical safety assessment
Additional information
pH of the saturated solution: 12.3
The water solubility has been determined for four elements present in lime (chemical) hydraulic (study result, modified EU A.6 method. The water solubilities of these four elements were determined as follows:
1) 1010 mg calcium/L at 20.0 ± 0.5 °C
2) 0.158 mg aluminium/l at 20.0 ± 0.5 °C
3) 0.305 mg silicon/l at 20.0 ± 0.5 °C
4) 0.115 mg iron /l at 20.0 ± 0.5 °C.
An exact value for the water solubility of lime (chemical) hydraulic can not be determined since the molecular formula of the test item is unknown. However, since calcium is the main component of the test material it can be assumed that the test item is soluble in water.
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