2-ethoxybenzoic acid

Density

Link to relevant study record(s)

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

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