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Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
13.2.2008
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP-Guideline study
Qualifier:
according to guideline
Guideline:
other: EU Method A.3 (Relative Density); CSN ISO 1183-1 part B
Deviations:
yes
Remarks:
: n- hexane was chosen as a solvent instead of water, because of a low solubility of the test substance in n- hexane.
GLP compliance:
yes
Type of method:
pycnometer method
Type:
relative density
Density:
1.94
Temp.:
20 °C

Study results

Table No. 1 Results of density measurement

Parameter

1stdetermination

2nddetermination

Average

Weight of empty pycnometer (m0)

19.45684

18.09101

-

Weight of pycnometer with test substance (m1)

26.80524

26.35542

-

Weight of solid test substance (m1– m0)

7.34840

8.26441

-

Weight of pycnometer with sample and n-hexane (m2)

41.31008

40.69086

-

Weight of pycnometer with n-hexane (m3)

36.50045

35.32724

-

Density of n-hexane (rhexane)

0.67424

0.67474

0.67449

Density of solid substance (rTV)

1.9474

1.9259

1.9366

Relative density of solid substance

-

-

1.937

 

Note: Standard deviation of relative density is 0.02 and was calculated from variation range.

Conclusions:
Relative density of the test substance, Ashes (residues), is 1.937.

Standard uncertainty of determination was estimated to 0.02 (*).
(*) Standard uncertainty is equal to a standard deviation.
Endpoint:
density, other
Remarks:
Density types indicated: Proctor density; density; bulk density
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well documented publication/study report which meets basic scientific principles
Qualifier:
according to guideline
Guideline:
other: DIN EN 1097-6
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: DIN EN 1097-3
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: DIN EN 13286-2
Deviations:
not specified
GLP compliance:
no
Type:
other: Proctor density
Density:
>= 1.3 - <= 1.5 g/cm³
Remarks on result:
other: The result is independent on the water content. Weak optimum in the Proctor curve is present at ca. wpr=10-14%.
Type:
density
Density:
>= 2.4 - <= 2.6 g/cm³
Remarks on result:
other: apparent density, geometrical density
Type:
bulk density
Density:
>= 1 - <= 1.4 g/cm³
Remarks on result:
other: temperature not reported

The temperature was not reported.

Endpoint:
density, other
Remarks:
Density types indicated: Proctor density; density; bulk density
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well documented publication/study report which meets basic scientific principles
Qualifier:
according to guideline
Guideline:
other: DIN V 18004
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: DIN EN 1097-3
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: DIN EN 13286-2
Deviations:
not specified
GLP compliance:
no
Type:
other: Proctor density
Density:
>= 0.9 - <= 1.2 g/cm³
Remarks on result:
other: The optimal water content is 30-40%.
Type:
density
Density:
>= 1 - <= 1.5 g/cm³
Remarks on result:
other: Particle density
Type:
bulk density
Density:
>= 0.6 - <= 1 g/cm³
Remarks on result:
other: temperature not reported

The temperature was not reported.

Endpoint:
density, other
Remarks:
Density types indicated: Proctor density; density; bulk density
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well documented publication/study report which meets basic scientific principles
Qualifier:
according to guideline
Guideline:
other: DIN EN 1097-6
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: DIN EN 1097-3
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: DIN EN 13286-2
Deviations:
not specified
GLP compliance:
no
Type:
other: Proctor density
Density:
>= 1.1 - <= 2 g/cm³
Remarks on result:
other: Optimal water content is 17%-30%.
Type:
density
Density:
>= 2.4 - <= 3.3 g/cm³
Remarks on result:
other: apparent density, geometrical density
Type:
bulk density
Density:
>= 0.7 - <= 1.5 g/cm³
Remarks on result:
other: temperature not reported

The temperature was not reported.

Endpoint:
density, other
Remarks:
Density types indicated: Proctor density; density; bulk density
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well documented publication/study report which meets basic scientific principles
Qualifier:
according to guideline
Guideline:
other: DIN EN 1097-6
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: DIN EN 1097-3
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: DIN EN 13286-2
Deviations:
not specified
GLP compliance:
no
Type:
other: Proctor density
Density:
>= 1.2 - <= 1.5 g/cm³
Remarks on result:
other: Optimal water content is 15-25%.
Type:
density
Density:
>= 2 - <= 2.6 g/cm³
Remarks on result:
other: Apparent density, geometrical density. The result depends on the content of glass, porosity and content of residual coal.
Type:
bulk density
Density:
>= 0.8 - <= 1.2 g/cm³
Remarks on result:
other: temperature not reported

The temperature was not reported.

Description of key information

Fly ash: relative density = 1.94 at 20 °C
Density: ≥2.0 - ≤ 3.3 g/cm³ (for boiler slag, bottom ash, fly ash from hard coal and fly ash from brown coal)
Proctor density: ≥ 0.9 - ≤ 2.0 g/cm³ (for boiler slag, bottom ash, fly ash from hard coal and fly ash from brown coal)
Bulk density: ≥ 0.6 - ≤ 1.5 g/cm³ (for boiler slag, bottom ash, fly ash from hard coal and fly ash from brown coal)

Key value for chemical safety assessment

Additional information