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Density

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Reference
Endpoint:
density
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-02-28 – 2017-02-28
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): Isopentyl Benzoate
- Molecular formula: C12 H16 O2
- Molecular weight : 192.256 g/mol
- Smiles notation: c1(C(OCCC(C)C)=O)ccccc1
- InChl : 1S/C12H16O2/c1-10(2)8-9-14-12(13)11-6-4-3-5-7-11/h3-7,10H,8-9H2,1-2H3
- Substance type: organic
- Physical state: Liquid
Key result
Type:
density
Density:
0.987 g/cm³
Temp.:
20 °C

Method Details

Observed Values

 

 

1st

Observation

2nd

Observation

Guideline

OECD 109

 

 

Method

IS 4730 : 1994 (Reaffirmed 2010)

Method for Determination of

Density of Liquids (First Revision)

 

 

Principle of

Method

Determination of the mass at a given temperature of a volume of the material contained in a density

bottle (pycnometer) and determination of the volume of the latter by determining the mass of the corresponding volume of water at the same temperature. The density is obtained by dividing the mass of material by its volume.

 

 

Test

temperature

(°C)

20 °C

20.0°C

Atmospheric

pressure

(hPa)

978.2

979.2

Weight of

empty dry

pyknometer(X)

g

29.424

31.127

Weight of

pyknometer +

test item (Y)

g

78.339

79.993

Apparent

mass of test

item (M1)

(M1 = Y - X) g

48.915

48.866

Weight of

pyknometer +

water (Z)

g

78.823

80.642

Apparent

mass of water

(M2)

(M2 = Z - X) g

49.399

49.515

Buoyancy

correction (A)

A = (*ρat × M2)

0.0576

0.0578

(WA-WB)

g/cm³ (ρtw)

0.9982

0.9982

 

CALCULATIONS:

1st calculated density

2nd calculated density

(48.9726)

____________ X 0.9982 = 0.9884 g/cm3

g/cm³ (49.4566)

(48.9238)

____________ X 0.9982 = 0.9851 g/cm3

g/cm³ (49.5728)

Average density

= 0.9867 g/cm³

Conclusions:
The density of test item Isopentyl Benzoate (CAS No. 94-46-2)was determined following OECD Guideline 109 and according to theIS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of the test item was determined to be 0.9867 g/cm³ at 20°C and 978.8 hPa.
Executive summary:

The density of test item Isopentyl Benzoate (CAS No. 94-46-2)was determined following OECD Guideline 109 and according to theIS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of the test item was determined to be 0.9867 g/cm³ at 20°C and 978.8 hPa.

Description of key information

The density of test item Isopentyl Benzoate (CAS No. 94-46-2)was determined following OECD Guideline 109 and according to theIS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of the test item was determined to be 0.9867 g/cm³ at 20°C and 978.8 hPa.

Key value for chemical safety assessment

Relative density at 20C:
0.987

Additional information

The density of test item Isopentyl Benzoate (CAS No. 94-46-2)was determined following OECD Guideline 109 and according to theIS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of the test item was determined to be 0.9867 g/cm³ at 20°C and 978.8 hPa.

Other supporting studies from various reliable sources such as review article and handbooks also indicates that the density of chemical Isopentyl Benzoate was determined to be in the range of 0.986 g/cm3 to 0.993 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 0.9867 g/cm3 at 20 degree C, thus considered as key study for the chemical safety assessment.