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Density

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Reference
Endpoint:
density, other
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-01-13 – 2017-01-13
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 of 2-ethoxy benzoic acid (pure) (CAS No. 134- 11-2 ) was determined following OECD guideline 109 and according to the Indian standard method for determination of density of liquids [IS 4730:1994 (Reaffirmed 2010)].
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-ethoxy benzoic acid
Molecular formula:C9H10O3
Molecular weight:166.175 g/mol
Substance Type: Organic
Physical State: Liquid
Key result
Type:
density
Density:
0.975 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 (pyknometer) 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)

976.5

977.4

Weight of

empty dry

pyknometer(X)

g

30.728

31.273

Weight of

pyknometer +

test item (Y)

g

79.668

80.130

Apparent

mass of test

item (M1)

(M1 = Y - X) g

48.940

48.857

Weight of

pyknometer +

water (Z)

g

81.162

80.906

Apparent

mass of water

(M2)

(M2 = Z - X) g

50.434

50.434

Buoyancy

correction (A)

A = (*ρat × M2)

0.058

0.057

(WA-WB)

g/cm³ (ρtw)

0.9982

0.9982

 

CALCULATIONS:

FOR LIQUIDS

Density = (M1+A)/ (M2+A) X ρtw

1st calculated density

2nd calculated density

(48.940+0.058)

____________ X 0.9982 = 0.9686 g/cm3

g/cm³ (50.434+0.058)

(48.857+0.057)

____________ X 0.9980 = 0.9826 g/cm3

g/cm³ (49.633+0.057)

Average density

= 0.9754 g/cm³

Conclusions:
The density of 2-ethoxy benzoic acid (pure) (CAS No. 134-11-2)was determined following OECD Guideline 109 and according to the IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of test item is was determined to be 0.9754 g/cm³ at 20°C and 976.9 hPa.
Executive summary:

The density of  2-ethoxy benzoic acid (pure) (CAS No. 134-11-2)was determined following OECD Guideline 109 and according to the IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of test item is was determined to be 0.9754 g/cm³ at 20°C and 976.9 hPa.

Description of key information

The density of  2-ethoxy benzoic acid (pure) (CAS No. 134-11-2)was determined following OECD Guideline 109 and according to the IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of test item is was determined to be 0.9754 g/cm³ at 20°C and 976.9 hPa

Key value for chemical safety assessment

Relative density at 20C:
0.975

Additional information

The density of  2-ethoxy benzoic acid (pure) (CAS No. 134-11-2)was determined following OECD Guideline 109 and according to the IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of test item is was determined to be 0.9754 g/cm³ at 20°C and 976.9 hPa.

Other supporting study reliable handbook ,the density of chemical 2-ethoxy benzoic acid was reported to be 1.105 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 0.9754 g/cm3 at 20 degree C thus considered as key study for the chemical safety assessment