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Density

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Reference
Endpoint:
density, other
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
20/2/2016 - 20/2/2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard OECD test guidelines
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Principles of method if other than guideline:
The density is calculated from the difference in weight between the full and empty pyknometer and its volume.Density is determined following OECD guideline 109 and according to the method adapted from ASTM D 854-02
GLP compliance:
no
Type of method:
pycnometer method
Specific details on test material used for the study:
- Name of test material : 5-methoxy-1,3-dihydro-2H-benzimidazole-2-thione
- Molecular formula : C8H8N2OS
- Molecular weight : 180.2302 g/mol
- Smiles notation : COc1ccc2c(c1)nc([nH]2)S
- InChl : 1S/C8H8N2OS/c1-11-5-2-3-6-7(4-5)10-8(12)9-6/h2-4H,1H3,(H2,9,10,12)
- Substance type : Organic
- Physical state : Solid
Key result
Type:
density
Density:
1.288 g/cm³
Temp.:
20 °C
Remarks on result:
other: No other detail available

TEST ITEM DESCRIPTION AND RESULTS

Method Details

Observations

Remarks if, any

Guideline

OECD 109

1stReading

2nd Reading

 

 

 

Method

Adapted from ASTM 854-02

 

 

 

Principle of method

The density of test item is determined by using pyknometer. It is the ratio of mass of the unit volume of test item at a stated temperature to mass of the same volume of gas free distilled water at a stated temperature.

 

 

 

Test temperature (°C)

-

20°C

20°C

 

Atmospheric pressure (in hPa)

-

977.4 hPa

977.0 hPa

 

Weight of empty dry pyknometer (Wp)

 

29.524 g

30.813 g

 

Weight of test item (m)

 

3 g

3g

 

Weight of pyknometer filled with water (WA)

 

78.955 g

81.013g

 

Weight of pyknometer + test Item (WPS)

 

32.424 g

33.767 g

 

Weight of pyknometer +test Item+ water (WB)

 

79.451 g

81.811 g

 

 

CALCULATIONS:

 

Calculated values

1st Calculation

2nd Calculation

Wo=WPS-WP

2.900 g

2.954 g

(WA-WB)

-0.496 g

-0.798 g

Density = WO/[WO+ (WA-WB)]

2.900/[2.900-0.496]

=1.206 g/cm3

2.954/[2.954 -0.798]

=1.370 g/cm3

Mean density; D (g/cm3)

1.288 g/cm3

 

Conclusions:
The density of test item was determined following OECD guideline 109 and according to the method adapted from ASTM D 854 -02. The mean density of the test item was determine to be 1.288 g/cm3 at 20oC and 977.2 hPa.
Executive summary:

The density of test item was determined following OECD guideline 109 and according to the method adapted from ASTM D 854 -02. The mean density of the test item was determine to be 1.288 g/cm3 at 20oC and 977.2 hPa.

Description of key information

The density of test item was determined following OECD guideline 109 and according to the method adapted from ASTM D 854 -02. The mean density of the test item was determine to be 1.288 g/cm3at 20oC and 977.2 hPa.

Key value for chemical safety assessment

Additional information

The density of test item was determined following OECD guideline 109 and according to the method adapted from ASTM D 854 -02. The mean density of the test item was determine to be 1.288 g/cm3 at 20oC and 977.2 hPa.

Density of test chemical is determine to be 1.2752 g/cm3 at temperature 25 Deg C & 1.2752 g/cm3 at temperature 25 Deg C.