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Diss Factsheets

Physical & Chemical properties

Water solubility

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Administrative data

Link to relevant study record(s)

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Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: only short abstract available
Principles of method if other than guideline:
House method of the testing Laboratory
Title: Determination of matter soluble in water – Cold extraction method
GLP compliance:
no
Type of method:
flask method
Water solubility:
0.13 other: %
Remarks on result:
other: water soluble matter of Fillite Grey Kazakhstan ADD
Water solubility:
0.26 other: %
Remarks on result:
other: water soluble matter of Fillite U.K ADD
Water solubility:
0.19 other: %
Remarks on result:
other: water soluble matter of Fillite Chinese ADD
Water solubility:
0.05 other: %
Remarks on result:
other: water soluble matter of Fillite Indian ADD
Water solubility:
0.04 other: %
Remarks on result:
other: water soluble matter of Fillite White Kazakhstan ADD
Water solubility:
0.01 other:
Remarks on result:
other: water soluble matter of Fillite Russian ADD

The water solubility is expressed by the leachability of the water soluble components of the cenospheres, fly, alumo silicate in water.

Temperature and pH value are not given.

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP-Guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
yes
Remarks:
: The test item is a complex product of oxides.
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
yes
Remarks:
: The test item is a complex product of oxides.
Principles of method if other than guideline:
The water soluble matter of the test item was determined by gravimetric method.

GLP compliance:
yes (incl. QA statement)
Type of method:
flask method
Water solubility:
0.068 g/L
Temp.:
20 °C
pH:
9.33
Remarks on result:
other: 0.068 g/L is equivalent to 2.3 g/kg (0.23 % (w/w) water soluble matter)
Details on results:
Temperature: 20 °C +/- 5 °C

Gravimetric determination of the soluble components at 20 °C in water

Sampling Time

Soluble components

[h]

[mg/kg]

0 *

2268

24

2268

48

2222

Mean ± RSD [%]

2253 ± 1

* after 96 h pre-equilibration

Analytical Samples and Individual Results of the Main Test (Determination by Gravimetry)

Gravimetric determination after 96 h equilibration (t=0)

Initial

weight

Flask before evaporation

Aliquot

Flask after evaporation

Residue

Soluble components per Liter

Soluble comp. per

kg test item

[g]

[g]

[ml]

[g]

[g]

[mg/L]

[mg/kg Fillite]

60.121

128.5678

300

128.5878

0.0200

66.7

2218

60.410

128.3233

300

128.3429

0.0196

65.3

2163

60.351

129.1192

300

129.1397

0.0205

68.3

2265

60.283

128.2199

300

128.2421

0.0222

74.0

2455

60.115

130.8117

300

130.8319

0.0202

67.3

2240

Mean ± RSD ( ± %)

 

 

0.02 ± 5

68.3 ± 5

2268 ± 5

 

Gravimetric determination after 120 h equilibration (t=24h)

Initial

weight

Flask before evaporation

Aliquot

Flask after evaporation

Residue

Soluble components per Liter

Soluble comp. per

kg test item

[g]

[g]

[ml]

[g]

[g]

[mg/L]

[mg/kg Fillite]

60.121

130.1577

300

130.1778

0.0201

67.0

2229

60.410

129.8234

300

129.8429

0.0195

65.0

2152

60.351

129.3594

300

129.3797

0.0203

67.7

2242

60.283

130.2796

300

130.3018

0.0222

74.0

2455

60.115

128.8215

300

128.8419

0.0204

68.0

2262

Mean ± RSD ( ± %)

 

 

0.021 ± 5

68.3 ± 5

2268 ± 5

 

Gravimetric determination after 144 h equilibration (t=48h)

Initial

weight

Flask before evaporation

Aliquot

Flask after evaporation

Residue

Soluble components per Liter

Soluble comp. per

kg test item

[g]

[g]

[ml]

[g]

[g]

[mg/L]

[mg/kg Fillite]

60.121

127.8678

300

127.8875

0.0197

65.7

2184

60.410

130.6230

300

130.6425

0.0195

65.0

2152

60.351

131.2552

300

131.2757

0.0205

68.3

2265

60.283

130.7696

300

130.7901

0.0205

68.3

2267

60.115

131.5437

300

131.5639

0.0202

67.3

2240

Mean ± RSD ( ± %)

 

 

0.02 ± 2

66.9 ± 2

2222 ± 2

 

Please note: The value for the soluble components per Liter is not representative for the test item. It belongs to the test conditions using 2000 mL test medium and 60 g test item. If more test item or less test media is used, this value can be higher.

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP-Guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
yes
Remarks:
: The test item is a complex product of oxides.
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
yes
Remarks:
: The test item is a complex product of oxides.
Principles of method if other than guideline:
The water soluble matter of the test item was determined by gravimetric method.

GLP compliance:
yes (incl. QA statement)
Type of method:
flask method
Water solubility:
0.051 g/L
Temp.:
20 °C
pH:
9.33
Remarks on result:
other: 0.051 g/L is equivalent to 1.7 g/kg (0.17 % (w/w) water soluble matter)
Details on results:
Temperature: 20 °C +/- 5 °C

Gravimetric determination of the soluble components at 20 °C in water

Sampling Time

Soluble components

[h]

[mg/kg Fillite RGW]

0 *

1680

24

1680

48

1682

Mean ± RSD [%]

1681 ± 0

·        after 96 h pre-equilibration

·         

             Analytical Samples and Individual Results of the Main Test (Determination by Gravimetry)

Gravimetric determination after 96 h equilibration (t=0)

Initial

weight

Flask before evaporation

Aliquot

Flask after evaporation

Residue

Soluble components per Liter

Soluble comp. per

kg test item

[g]

[g]

[ml]

[g]

[g]

[mg/L]

[mg/kg Fillite]

60.041

128.2199

300

128.2351

0.0152

50.7

1688

60.189

130.8117

300

130.8279

0.0162

54.0

1794

60.054

131.4785

300

131.4940

0.0155

51.7

1721

60.009

127.6299

300

127.6451

0.0152

50.7

1689

60.176

128.3883

300

128.4019

0.0136

45.3

1507

Mean ± RSD ( ± %)

 

 

0.015 ± 6

50.5 ± 6

1680 ± 6

 

Gravimetric determination after 120 h equilibration (t=24h)

Initial

weight

Flask before evaporation

Aliquot

Flask after evaporation

Residue

Soluble components per Liter

Soluble comp. per

kg test item

[g]

[g]

[ml]

[g]

[g]

[mg/L]

[mg/kg Fillite]

60.041

127.2199

300

127.2351

0.0152

50.7

1688

60.189

131.5117

300

131.5279

0.0162

54.0

1794

60.054

128.4785

300

128.494

0.0155

51.7

1721

60.009

127.5299

300

127.5451

0.0152

50.7

1689

60.176

127.8883

300

127.9019

0.0136

45.3

1507

Mean ± RSD ( ± %)

 

 

0.015 ± 6

50.5 ± 6

1680 ± 6

 


Gravimetric determination after 144 h equilibration (t=48h)

Initial

weight

Flask before evaporation

Aliquot

Flask after evaporation

Residue

Soluble components per Liter

Soluble comp. per

kg test item

[g]

[g]

[ml]

[g]

[g]

[mg/L]

[mg/kg Fillite]

60.041

131.6198

300

131.6351

0.0153

51.0

1699

60.189

130.7117

300

130.7279

0.0162

54.0

1794

60.054

130.4781

300

130.494

0.0159

53.0

1765

60.009

130.5297

300

130.5441

0.0144

48.0

1600

60.176

128.8886

300

128.9026

0.0140

46.7

1551

Mean ± RSD ( ± %)

 

 

0.015 ± 6

50.5 ± 6

1682 ± 6

 

 

Please note: The value for the soluble components per Liter is not representative for the test item. It belongs to the test conditions using 2000 mL test medium and 60 g test item. If more test item or less test media is used, this value can be higher.

 

Description of key information

0.051-0.068 g/L (0.17%-0.23%; w/w)

Key value for chemical safety assessment

Water solubility:
0.051 g/L
at the temperature of:
20 °C

Additional information

Main components are not soluble in water; soluble fraction contains mostly calcium, potassium, sodium, magnesium compounds.