p-tolyl acetate

Density

Link to relevant study record(s)

Reference

Endpoint:

density, other

Remarks:

mean density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-01-03 – 2017-01-03

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 p-tolyl acetate (CAS No. 140-39-6 ) 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): p-tolyl acetate
Molecular formula:C9H10O2
Molecular weight:150.176 g/mol
Substance Type: Organic
Physical State: Liquid

Type:

density

Density:

1.093 g/cm³

Temp.:

20 °C

By Pyknometer Method:

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)	974.5
Weight of empty dry pyknometer(X)	g	31.264	29.324
Weight of pyknometer + test item (Y)	g	85.912	83.582
Apparent mass of test item (M1)	(M1 = Y - X) g	54.648	54.258
Weight of pyknometer + water (Z)	g	81.000	79.002
Apparent mass of water (M2)	(M2 = Z - X) g	49.736	49.678
Buoyancy correction (A)	A = (*ρat × M2)	0.058	0.058
(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
(54.648+0.058) ____________ X 0.9980 = 1.096 g/cm3 g/cm³ (49.678+0.058)	(54.258+0.058) ____________ X 0.9980 = 1.090 g/cm3 g/cm³ (49.678+0.058)
Average density	= 1.093 g/cm³

Conclusions:

The density of chemical p-tolyl acetate (CAS No. 140-39-6)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 chemical p-tolyl acetate was determined to be 1.093 g/cm³ at 20°C and 974.5 hPa.

Executive summary:

The density of chemical p-tolyl acetate (CAS No. 140-39-6)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 chemical p-tolyl acetate was determined to be 1.093 g/cm³ at 20°C and 974.5 hPa.

Description of key information

The density of chemical p-tolyl acetate (CAS No. 140-39-6)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 chemical p-tolyl acetate was determined to be 1.093 g/cm³ at 20°C and 974.5 hPa

Key value for chemical safety assessment

Relative density at 20C:

1.093

Additional information

The density of chemical p-tolyl acetate (CAS No. 140-39-6)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 chemical p-tolyl acetate was determined to be 1.093 g/cm³ at 20°C and 974.5 hPa.

Other supporting studies from various reliable handbooks suggests that the density of chemical p-tolyl acetate was determined to be in the range of 1.004 g/cm3 to 1.0512 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 1.093 g/cm³ at 20°C and 974.5 hPa,thus considered as key study for the chemical safety assessment.