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EC number: 931-322-8 | CAS number: 68131-74-8
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 1995
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 38414-4, DIN 38409-H1
- GLP compliance:
- no
- Type of method:
- flask method
- Remarks on result:
- other: For results obtained please refer to sections 'Details on results' and 'any other information on results incl. tables'.
- Details on results:
- In 100 g of the substance 743 mg to 1.944 g is soluble in 1L of water at pH 10.12 to 11.87. The result 743mg/L to 1.944 g/L refers to the concentration of the water soluble components of 5 fly ashes (evaporation residue) and is not a concentration of a saturated solution. Main components of ash are insoluble in water. The soluble fraction comprises mostely of calcium, sodium, potasium and magnesium cations and sulphates. The composition of the leachate shows that heavy metals present in ash are very little soluble in water at pH 10.12 to 11.87 and are present in the water solution in concentration lower than 1mg/L.
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 38414-4, DIN 38409-H1
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
- Remarks on result:
- other: For results obtained please refer to sections 'Details on results' and 'any other information on results incl. tables'.
- Details on results:
- In 100 g of the substance 2.9 g is soluble in 1L of water at 26.5 °C and pH 12.74. The result 2.9/L at such loading refers to the concentration of the water soluble components of ash (evaporation residue) and is not a concentration of a saturated solution. Main components of ash are insoluble in water.
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 38414-4, DIN 38409-H1
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
- Remarks on result:
- other: For results obtained please refer to sections 'Details on results' and 'any other information on results incl. tables'.
- Details on results:
- In 100 g of the substance 2.29 g is soluble in 1L of water at 26.6 °C and pH 12.39. The result 2.29 g/L at such loading refers to the concentration of the water soluble components of ash (evaporation residue) and is not a concentration of a saturated solution. Main components of ash are insoluble in water.
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 38414-4, DIN 38409-H1
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
- Remarks on result:
- other: For results obtained please refer to sections 'Details on results' and 'any other information on results incl. tables'.
- Details on results:
- In 100 g of the substance 1.07 g is soluble in 1L of water at 26.5 °C and pH 11.85. The result 1.07 g/L at such loading refers to the concentration of the water soluble components of ash (evaporation residue) and is not a concentration of a saturated solution. Main components of ash are insoluble in water.
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 38414-4, DIN 38409-H1
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
- Remarks on result:
- other: For results obtained please refer to sections 'Details on results' and 'any other information on results incl. tables'.
- Details on results:
- In 100 g of the substance 2.39 g is soluble in 1L at 26.6 °C and pH 12.41. The result 2.39 g/L at such loading refers to the concentration of the water soluble components of ash (evaporation residue) and is not a concentration of a saturated solution. Main components of ash are insoluble in water.
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 38414-4, DIN 38409-H1
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
- Remarks on result:
- other: For results obtained please refer to sections 'Details on results' and 'any other information on results incl. tables'.
- Details on results:
- In 100 g of the substance 2.93 g is soluble in 1L of water at 26.4 °C and pH 12.69. The result 2.93 g/L at such loading refers to the concentration of the water soluble components of ash (evaporation residue) and is not a concentration of a saturated solution. Main components of ash are insoluble in water.
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study with acceptable restrictions
- Principles of method if other than guideline:
- Water soluble fraction of the sample was measured by method DIN 38409-H1.
- GLP compliance:
- no
- Type of method:
- flask method
- Remarks on result:
- other: For results obtained please refer to sections 'Details on results' and 'any other information on results incl. tables'.
- Details on results:
- In 100 g of the substance 4.1 g is soluble in 1L of water at 21°C and pH 12.8. The result 4.1g/L at such loading refers to the concentration of the water soluble components of ash (evaporation residue) and is not a concentration of a saturated solution. Main components of ash are insoluble in water. The water soluble components of the ash detected in the leachate in the concentration higher than 1 mg/L are cations: Na, K, Ca, Mg and Sr and anions: sulphate and chloride. The composition of the leachate shows that the compounds of trace elements in the ash are very little soluble in water at pH 12.8 and are present in the water solution at ppb level.
Referenceopen allclose all
The temperature is not available. The water solubility is expressed by the leachability of the water soluble components of the ash in water.
The range of values correspond to results for 5 fly ashes from hard coal combustion |
|
Acid capacity Ks 8.2 |
0.55-3.90 mmol/L |
Acid capacity Ks 4.3 |
1.15-4.60 mmol/L |
Water soluble components |
Concentration of the water soluble components in the leachate [mg/L] |
Cl- |
<10-50 |
SO4- |
326-1080 |
PO43- |
<0.5-1.35 |
NO3- |
<2.0 |
NO2- |
0.016-0.13 |
F- |
0.42-2.3 |
CN- |
<0.01 |
Na |
8-113 |
K |
9-103 |
Ca |
153-450 |
Mg |
0.1-17 |
NH4+ |
0.14-3.0 |
Fe |
<0.1 |
Mn |
<0.01-0.02 |
Cu |
<0.01 |
Zn |
<0.01 |
Ni |
<0.05 |
Cr total |
0.15-2.25 |
Cr(VI) |
0.07-1.1 |
Cd |
<0.005-0.008 |
Hg |
<0.0002 |
Pb |
<0.05 |
As |
0.005-0.64 |
Se |
0.015-0.238 |
Tl |
<0.01-0.02 |
Sb |
0.017-0.077 |
Sn |
<0.005 |
Ba |
0.05-0.66 |
Be |
<0.002 |
B |
2.76-12.16 |
Co |
<0.01 |
Ag |
<0.01 |
V |
0.2-0.62 |
The water solubility is expressed by the leachability of the water soluble components of the ash in water.
The water solubility is expressed by the leachability of the water soluble components of the ash in water.
The water solubility is expressed by the leachability of the water soluble components of the ash in water.
The water solubility is expressed by the leachability of the water soluble components of the ash in water.
The water solubility is expressed by the leachability of the water soluble components of the ash in water.
The concentration of water soluble components of the ash:
Water soluble components |
Concentration of the water soluble components in the leachate [mg/L] |
Concentration of selected components in ash [mg/kg] |
Cl- |
<7 |
|
SO4- |
1200 |
|
PO43- |
<0.015 |
|
NO3- |
<1 |
|
F- |
0.33 |
|
Total CN- |
<0.01 |
0.52 |
Na |
20.5 |
|
K |
34.1 |
|
Ca |
1580 |
|
Mg |
1.06 |
|
NH4+ |
0.144 |
|
Fe |
0.374 |
|
Mn |
0.012 |
|
Cu |
0.005 |
51.5 |
Zn |
0.041 |
|
Ni |
0.001 |
6.44 |
Cr total |
0.135 |
24.6 |
Cr(VI) |
0.09 |
|
Cd |
<0.002 |
<0.4 |
Hg |
<0.0002 |
<0.2 |
Pb |
<0.005 |
6.20 |
As |
<0.005 |
15.8 |
Se |
<0.005 |
4.04 |
Tl |
<0.001 |
|
Sb |
<0.005 |
<0.5 |
Ba |
0.292 |
977 |
B |
0.148 |
199 |
Co |
<0.005 |
16.4 |
Al |
<0.03 |
|
Mo |
0.067 |
<0.5 |
Sr |
35.9 |
1320 |
Ti |
<0.005 |
|
Description of key information
In 100 g of the substance 0.743 g-4.1 g is soluble in 1L of water.
Key value for chemical safety assessment
Additional information
The concentration of water soluble components of ashes (residues), coal is 743 mg/L to 4.1 g/L at ca. 21° C and pH 10.12-12.8 at the loading 100g of the substance in 1L of water. The result does not refer to concentration of a saturated solution. Main components of the substance are insoluble in water. The range of values is related to the various compositions of substance, especially with respect to the content of calcium oxide. The soluble fraction comprises mostly of calcium (1580 mg/L reported in ifn study, 2010 and 153-450 mg/L in HY study, 1995), sodium, potassium and magnesium cations and sulphates (at the level of 1200 mg/L reported in ifn study, 2010 for the ash with high content of calcium compounds), chlorides and small amount of phosphate and nitrates. The composition of the leachates show that compounds of heavy metals present in various tested ashes are very little soluble in water at pH 10.12 to 12.8 and are present in the water solution in concentration lower than 1 mg/L.
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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