Aluminium tristearate

Density

Link to relevant study record(s)

Reference

Endpoint:

density

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-02-09 – 2017-02-09

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 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):Aluminium tristearate- Molecular formula :C18H36O2.1/3Al- Molecular weight: 877.3995 g/mol- Substance type:Organic- Physical state:Solid

Key result

Type:

density

Density:

1.066 g/cm³

Temp.:

20 °C

Method Details		Observations		Remarks if, any
Guideline	OECD 109	1^stReading	2^nd 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)	-	20^oC	20^oC
Atmospheric pressure (in hPa)	-	976.8	975.8
Weight of empty dry pyknometer (Wp)		31.234	29.214
Weight of pyknometer filled with water (WA)		81.374	79.891
Weight of pyknometer + test Item (WPS)		36.274	34.231
Weight of pyknometer +test Item+ water (WB)		81.974	79.791

 

 

CALCULATIONS:

	Calculated values
	1^stCalculation	2^nd Calculation
Wo=WPS-WP	5.040	5.017
(WA-WB)	-0.600	-0.100
Specific gravity = WO/[WO+ (WA-WB)]	5.040/[5.440-0.600]	5.017/[5.017-0.100]
Specific Gravity; Gs	1.135*0.9982	1.001*0.9982
Density (g/cm³)	1.133	0.9991
Mean Density (g/cm³)	1.066

Conclusions:

The density of substance Aluminium tristearate (CAS No. 637-12-7)was determined following OECD Guideline 109 and according to the Adapted from ASTM D854-02 using glass pyknometer .The mean density of test item is was found to be1.066 g/cm³at 20°C and 975.85 hP.

Executive summary:

The density of substance Aluminium tristearate (CAS No. 637-12-7)was determined following OECD Guideline 109 and according to the Adapted from ASTM D854-02 using glass pyknometer .The mean density of test item is was found to be1.066 g/cm³at 20°C and 975.85 hP.

Description of key information

The density of substance Aluminium tristearate (CAS No. 637-12-7)was determined following OECD Guideline 109 and according to the Adapted from ASTM D854-02 using glass pyknometer .The mean density of test item is was found to be1.066 g/cm³at 20°C and 975.85 hP.

Key value for chemical safety assessment

Relative density at 20C:

1.066

Additional information

The density of substance Aluminium tristearate (CAS No. 637-12-7)was determined following OECD Guideline 109 and according to the Adapted from ASTM D854-02 using glass pyknometer .The mean density of test item is was found to be1.066 g/cm³at 20°C and 975.85 hP.

Other supporting studies from reliable sources such as authoritative database and handbook suggests that the density of chemical Aluminium tristearate was determined to be in the range of 1.01 g/cm3 to 1.070 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 1.066 g/cm3 at 20 degree C, thus considered as key study for the chemical safety assessment