2,2'-(vinylenedi-p-phenylene)bisbenzoxazole

Density

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

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	1^stReading	2^nd 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^oC	20^oC
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
	1^stCalculation	2^nd 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.