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Reference
Endpoint:
density
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-02-16 – 2017-02-17
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 Test item 1'-acetonaphthone (CAS No. 941-98-0 ) 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:1-(1-naphthyl)ethanone
- Molecular formula: C12 H10 O
- Molecular weight: 170.21 g/mol
- Smiles notation: c12c(cccc1C(C)=O)cccc2
- InChl: 1S/C12H10O/c1-9(13)11-8-4-6-10-5-2-3-7-12(10)11/h2-8H,1H3
- Substance type: Organic
- Physical state: Liquid
Key result
Type:
density
Density:
1.114 g/cm³
Temp.:
20 °C
Remarks on result:
other: pressure=972.3 hPa.

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)

972.3

972.3

Weight of

empty dry

pyknometer(X)

g

29.268

31.056

Weight of

pyknometer +

test item (Y)

g

84.761

87.147

Apparent

mass of test

item (M1)

(M1 = Y - X) g

55.493

56.091

Weight of

pyknometer +

water (Z)

g

78.951

81.317

Apparent

mass of water

(M2)

(M2 = Z - X) g

49.683

50.261

Buoyancy

correction (A)

A = (*ρat × M2)

0.058

0.0587

(WA-WB)

g/cm³ (ρtw)

0.9982

0.9982

 

CALCULATIONS:

Density =(M1+A)  X ρtw

                  (M2+A)

1st calculated density

2nd calculated density

55.551

____________ X 0.9982 = 1.1148 g/cm3

g/cm³ 49.741

56.1497

____________ X 0.9982 = 1.1139 g/cm3

g/cm³ 50.3197

Average density

= 1.1144 g/cm³

Conclusions:
The density of substance 1-(1-naphthyl)ethanone (CAS No. 941-98-0)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 substance 1-(1-naphthyl)ethanone was determined to be 1.1144g/cm³ at 20°C and 972.3 hPa.
Executive summary:

The density of substance 1-(1-naphthyl)ethanone (CAS No. 941-98-0)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 substance 1-(1-naphthyl)ethanone was determined to be 1.1144 g/cm³ at 20°C and 972.3 hPa.

Description of key information

The density of substance 1-(1-naphthyl)ethanone (CAS No. 941-98-0)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 substance 1-(1-naphthyl)ethanone was determined to be 1.1144g/cm³ at 20°C and 972.3 hPa.

Key value for chemical safety assessment

Relative density at 20C:
1.12

Additional information

The density of substance 1-(1-naphthyl)ethanone (CAS No. 941-98-0)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 substance 1-(1-naphthyl)ethanone was determined to be 1.1144g/cm³ at 20°C and 972.3 hPa.

Other supporting from various reliable sources such as authoritative database and handbooks suggests that the density of chemical 1-(1-naphthyl)ethanone was reported to be in the range of 1.117 g/cm3 to 1.1338 g/cm3 ,and the selected key study value lies in the range as mentioned above.

As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of density as 1.1144 g/cm3 at 20 degree C,thus considered as key study.