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Density

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Reference
Endpoint:
density, other
Remarks:
Density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
30-08-2017 – 30-08-2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard OECD test guidelines.
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Principles of method if other than guideline:
The density of Test item N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No. 93964-07-9) was determined
following OECD guideline 109 and according to the Indian standard method for determinationof density of liquids [IS 4730:1994 (Reaffirmed 2010)].
GLP compliance:
not specified
Type of method:
pycnometer method
Specific details on test material used for the study:
- Name of the test material: N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine
- Regulatory name: N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine
- Molecular formula: C32H37N5
- Molecular weight: 491.6793 g/mol
- Smiles: CCCCC(CC)CNc1ccc2ccccc2c1/N=N/c3ccc(cc3C)/N=N/c4ccc(cc4)C
- InChI: 1S/C32H37N5/c1-5-7-10-25(6-2)22-33-31-19-15-26-11-8-9-12-29(26)32(31)37-36-30-20-18-28(21-24(30)4)35-34-27-16-13-23(3)14-17-27/h8-9,11-21,25,33H,5-7,10,22H2,1-4H3/b35-34+,37-36+
- Substance type: Organic
Physical form: Dark red clear liquid
Key result
Type:
density
Density:
1.098 g/cm³
Temp.:
20 °C
Remarks on result:
other: at 970.3 hPa

TEST ITEM DESCRIPTION AND RESULTS

FOR LIQUIDS:

By Pyknometer Method: 

S.

 

 

Observed Values

Method Details

 

1st

2nd

No.

 

 

 

 

Observation

Observation

1

Guideline

OECD 109

 

 

2

Method

IS 4730 : 1994 (Reaffirmed 2010) –

 

 

 

 

Method for Determination of Density

 

 

 

 

of Liquids (First Revision)

 

 

3

Principle of

Determination of the mass at a given

 

 

 

Method

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.

 

 

4

Test

(°C)

20°C

20°C

 

temperature

 

 

 

5

Atmospheric

(hPa)

970.2

970.4

 

pressure

 

 

 

6

Weight of

g

29.962

31.115

 

empty dry

 

 

 

 

pyknometer(X)

 

 

 

7

Weight of

g

85.322

85.275

 

pyknometer +

 

 

 

 

test item(Y)

 

 

 

8

Apparent

(M1 = Y - X)g

55.36

54.16

 

mass of test

 

 

 

 

item(M1)

 

 

 

9

Weight of

g

80.325

80.323

 

pyknometer +

 

 

 

 

water(Z)

 

 

 

10

Apparent

(M2 = Z - X)g

50.363

49.208

 

mass of water

 

 

 

 

(M2)

 

 

 

                                                                                                                                                        

11

Buoyancy

A=(*ρat × M2)

0.0588

0.0574

 

correction(A)

 

 

 

12

Density of

g/cm³ (ρtw)

0.9982

0.9982

 

water** at test

 

 

 

 

temperature

 

 

 

*ρat=density of air at 27°C and 760 mm Hg pressure=0.001168 g/cm³**Density of water referred from the Table 1 of the was method.

CALCULATIONS:

 

FOR LIQUIDS

 

Density = (M1+A) X ρtw

(M2+A)

 1st calculated density                2nd calculated density

 

55.4188                                                                                          54.2174

 

____________ X 0.9982 = 1.0971 g/cm³              ____________ X 0.9982 = 1.0985 g/cm³

 

50.4218                                                                                          49.2654

 

 Average density                     = 1.0978 g/cm³


Conclusions:
The mean density of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No. 93964-07-9) was found to be
1.0978 g/cm³at 20 °C and 970.3 hPa..
Executive summary:

The density of test item N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No. 93964-07-9) was determined following OECD Guideline 109 and according to the IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) usingglass pyknometer. The mean density of test item was found to be 1.0978 g/cm³at 20 °C and 970.3 hPa..

Description of key information

The mean density of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No. 93964-07-9) was found to be 1.0978 g/cm³at 20 °C and 970.3 hPa..

Key value for chemical safety assessment

Relative density at 20C:
1.098

Additional information

The density of test item N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No. 93964-07-9) was determined following OECD Guideline 109 and according to the IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) usingglass pyknometer. The mean density of test item was found to be 1.0978 g/cm³at 20 °C and 970.3 hPa..