Dibenzo[b,f]cyclohepten-1-one

Density

Link to relevant study record(s)

Reference

Endpoint:

density

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-02-21 – 2017-02-21

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):Dibenzo[b,f]cyclohepten-1-one
- Molecular formula :C15H10O
- Molecular weight: 206.243 g/mol
- Substance type:Organic
- Physical state:Solid

Key result

Type:

density

Density:

0.88 g/cm³

Temp.:

20 °C

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)	-	974.2	973.2
Weight of empty dry pyknometer (Wp)		29.104	30.994
Weight of pyknometer filled with water (WA)		78.789	81.057
Weight of pyknometer + test Item (WPS)		33.857	35.938
Weight of pyknometer +test Item+ water (WB)		77.979	80.563

 

 

CALCULATIONS:

	Calculated values
	1^stCalculation	2^nd Calculation
Wo=WPS-WP	4.753	4.944
(WA-WB)	0.810	0.494
Specific gravity = WO/[WO+ (WA-WB)]	4.75/[4.753+0.810]	4.944/[4.944 + 0.494]

Conclusions:

The density of test item Dibenzo[b,f]cyclohepten-1-one (CAS No. 2222-33-5)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 determined to be 0.8801 g/cm³at 20 °C and 973.7 hPa.

Executive summary:

The density of test item Dibenzo[b,f]cyclohepten-1-one (CAS No. 2222-33-5)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 determined to be 0.8801 g/cm³at 20 °C and 973.7 hPa.

Description of key information

The density of test item Dibenzo[b,f]cyclohepten-1-one (CAS No. 2222-33-5)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 determined to be 0.8801 g/cm³at 20 °C and 973.7 hPa.

Key value for chemical safety assessment

Relative density at 20C:

0.88

Additional information

The density of test item Dibenzo[b,f]cyclohepten-1-one (CAS No. 2222-33-5)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 determined to be 0.8801 g/cm³at 20 °C and 973.7 hPa.

Other supporting studies from authoritative database indicates that the density of chemical Dibenzo[b,f]cyclohepten-1-one was estimated to be in the range of 1.188 g/cm3 to 1.2 g/cm3 .

As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of density as greater than 0.8801 g/cm3 at 20 degree C thus considered as key study for the chemical safety assessment.