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Density

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Reference
Endpoint:
density
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-03-07 – 2017-03-07
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 is calculated from the difference in weight between the full and empty pycnometer and its volume
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-methyl-4-nitroaniline
- Molecular formula: C7 H8 N2 O2
- Molecular weight: 152.152 g/mol
- Smiles notation: c1(cc(c(N)cc1)C)[N+](=O)[O-]
- InChI: 1S/C7H8N2O2/c1-5-4-6(9(10)11)2-3-7(5)8/h2-4H,8H2,1H3
- Substance type: Organic
- Physical state: Soli
Key result
Type:
density
Density:
1.309 g/cm³
Temp.:
20 °C

Method Details

Observations

Remarks if, any

Guideline

OECD 109

1stReading

2nd Reading

 

 

 

Method

Adapted from ASTM 854-02

 

 

 

Principle of method

The density of test item is determined by using pyknometer. It is the ratio of mass of the unit volume of test item at a stated temperature to mass of the same volume of gas free distilled water at a stated temperature.

 

 

 

Test temperature (°C)

-

20oC

20oC

 

Atmospheric pressure (in hPa)

-

973.3

971.2

 

Weight of empty dry pyknometer (Wp)

 

29.219

30.720

 

Weight of pyknometer filled with water (WA)

 

79.910

80.612

 

Weight of pyknometer + test Item (WPS)

 

34.147

35.740

 

Weight of pyknometer +test Item+ water (WB)

 

80.220

82.406

 

 

 

CALCULATIONS:

 

Calculated values

1st Calculation

2nd Calculation

 

Wo=WPS-WP

 

4.9280

 

5.0200

 

(WA-WB)

 

-0.3100

 

-1.7940

 

Specific gravity = WO/[WO+ (WA-WB)]

1.0671

1.5561

 

Specific Gravity; Gs

1.0671

1.5561

Density (g/cm³)

1.0652

1.5533

Mean Density (g/cm³)

1.3092

Conclusions:
The density of chemical 2-methyl-4-nitroaniline (CAS No. 99-52-5)was determined following OECD Guideline 109 and according to the method adapted from ASTM D 854-02 using glass pyknometer. The mean density of chemical 2-methyl-4-nitroaniline was found to be 1.3092 g/cm³at 20°C and 972.2 hPa
Executive summary:

The density of chemical  2-methyl-4-nitroaniline (CAS No. 99-52-5)was determined following OECD Guideline 109 and according to the method adapted from ASTM D 854-02 using glass pyknometer. The mean density of chemical  2-methyl-4-nitroaniline was found to be 1.3092 g/cm³at 20°C and 972.2 hPa

Description of key information

The density of chemical  2-methyl-4-nitroaniline (CAS No. 99-52-5)was determined following OECD Guideline 109 and according to the method adapted from ASTM D 854-02 using glass pyknometer. The mean density of chemical  2-methyl-4-nitroaniline was found to be 1.3092 g/cm³at 20°C and 972.2 hPa

Key value for chemical safety assessment

Relative density at 20C:
1.309

Additional information

The density of chemical  2-methyl-4-nitroaniline (CAS No. 99-52-5)was determined following OECD Guideline 109 and according to the method adapted from ASTM D 854-02 using glass pyknometer. The mean density of chemical  2-methyl-4-nitroaniline was found to be 1.3092 g/cm³at 20°C and 972.2 hPa

Other supporting studies from various reliable sources such as authoritative database and handbooks,the density chemical 2-methyl-4-nitroaniline was determined to be 1.1586 g/cm3 at 140 degree C.

As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of density as 1.3092 g/cm3 at 20 degree C thus considered as key study for the chemical safety assessment.