Registration Dossier

Physical & Chemical properties

Density

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
density
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-02-01 – 2017-02-01
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental result performed using standard methods of analysis
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 pycnometer and its volume
GLP compliance:
no
Type of method:
pycnometer method
Specific details on test material used for the study:
- Name of test material (as cited in study report): 2,2'-(Vinylenedi-4-phenylene)bis(benzoxazole)
- Molecular formula : C28H18N2O2 -Molecular weight : 414.462 g/mol
- Substance type:Organic
- Physical state:Solid
Key result
Type:
density
Density:
1.342 g/cm³
Temp.:
20 °C
Remarks on result:
other: No other detail available

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)

-

20oC

20oC

 

Atmospheric pressure (in hPa)

-

979.1

979.4

 

Weight of empty dry pyknometer (Wp)

 

29.108

30.904

 

Weight of pyknometer filled with water (WA)

 

78.779

81.199

 

Weight of pyknometer + test Item (WPS)

 

34.696

36.021

 

Weight of pyknometer +test Item+ water (WB)

 

80.351

82.378

 

 

 

CALCULATIONS:

 

Calculated values

1st Calculation

2nd Calculation

 

Wo=WPS-WP

 

5.588

 

5.117

 

(WA-WB)

 

-1.572

 

-1.179

 

Specific gravity = WO/[WO+ (WA-WB)]

5.588/[5.588-1.572]

5.117/[5.117-1.179]

 

Specific Gravity; Gs

1.391*0.9982

1.299*0.9982

Density (g/cm³)

1.388

1.297

Mean Density (g/cm³)

   1.342

Conclusions:
The density of substance 2,2'-(vinylenedi-p-phenylene)bisbenzoxazole (CAS No. 1533-45-5)was determined following OECD Guideline 109 and according to the Adapted from ASTM D854-02 using glass pyknometer. The mean density of test item is was determined to be 1.342 g/cm³ at 20°C and 979.2 hPa.
Executive summary:

The density of substance 2,2'-(vinylenedi-p-phenylene)bisbenzoxazole (CAS No. 1533-45-5)was determined following OECD Guideline 109 and according to the Adapted from ASTM D854-02 using glass pyknometer. The mean density of test item is was determined to be 1.342 g/cm³ at 20°C and 979.2 hPa.

Description of key information

The density of substance 2,2'-(vinylenedi-p-phenylene)bisbenzoxazole (CAS No. 1533-45-5) was determined following OECD Guideline 109 and according to the Adapted from ASTM D854-02 using glass pyknometer. The mean density of 2,2'-(vinylenedi-p-phenylene)bisbenzoxazole is determined to be 1.342 g/cm³ at 20°C and 979.2 hPa.

Key value for chemical safety assessment

Relative density at 20C:
1.342

Additional information

The density of substance 2,2'-(vinylenedi-p-phenylene)bisbenzoxazole (CAS No. 1533-45-5) was determined following OECD Guideline 109 and according to the Adapted from ASTM D854-02 using glass pyknometer. The experimental mean density of  2,2'-(vinylenedi-p-phenylene)bisbenzoxazole is determined to be 1.342 g/cm³ at 20°C and 979.2 hPa.

Other supporting study from authoritative databases, estimated the density of chemical 2,2'-(Vinylenedi-4-phenylene)bis(benzoxazole) as 1.281 ± 0.06 g/cm3 at 20 °C and 760 Torr pressure, closer to the selected key study.