2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt

Density

Link to relevant study record(s)

Reference

Endpoint:

density

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

13/06/2016 – 14/06/2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Experimental data using standard method of estimation

Justification for type of information:

Experimental test result performed using standard test guidelines

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 2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt (CAS No. 12227-78-0) was determined following OECD guideline 109 and according to OECD guideline 109 and according to the method adapted from ASTM D 854-02.

GLP compliance:

no

Type of method:

pycnometer method

Type:

density

Density:

2.024 g/cm³

Temp.:

20 °C

Remarks on result:

other: no other details available

TEST ITEM DESCRIPTION AND RESULTS

Method Details		Observations		Remarks if, any
Guideline	OECD 109	1^stReading	2^nd Reading
Method	Adapted from ASTM D854-02
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°C	20°C
Density of water at test temperature; g/cm^3(ρtw)		0.9982g/cm^3	0.9982g/cm^3
Atmospheric pressure (in hPa)	-	965.8 hPa	966.7 hPa
Weight of empty dry pyknometer (Wp)		29.462 g	30.867 g
Weight of pyknometer filled with water (WA)		79.581 g	80.542 g
Weight of pyknometer + test Item (WPS)		32.278 g	33.542 g
Weight of pyknometer +test Item+ water (WB)		79.882 g	82.307 g

 

CALCULATIONS:

FOR SOLIDS: By Pyknometer:

	Calculated values
	1^stCalculation	2^nd Calculation
Wo=WPS-WP	32.278–29.462 = 2.816	33.542– 30.867 = 2.675
(WA-WB)	79.581 –79.882  = -0.301	80.542–82.307 = -1.765
Specific Gravity = WO/[WO+ (WA-WB)]	= 2.816/[ 2.816 + (79.581 –79.882)]	= 2.675/[2.675 + (80.542–82.307)]
Specific Gravity; Gs	1.119	2.939
Density (g/cm^3)	1.119 × 0.9982 = 1.116 g/cm^3	2.939 × 0.9982 = 2.933 g/cm^3
Mean Density (g/cm^3)	2.024 g/cm^3

Conclusions:

The mean density of test item 2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt (CAS No. 12227-78-0) was determined following OECD Guideline 109 and according to the method adapted from ASTM D 854-02. The mean density of the test item was determied to be 2.024 g/cm3 at 20° C and 967.5 hPa.

Executive summary:

The mean density of test item 2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt (CAS No. 12227-78-0) was determined following OECD Guideline 109 and according to the method adapted from ASTM D 854-02.  The mean density of the test item was determied to be 2.024 g/cm3 at 20° C and 967.5 hPa.

Description of key information

The mean density of test item 2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt (CAS No. 12227-78-0) was determined following OECD Guideline 109 and according to the method adapted from ASTM D 854-02.  The mean density of the test item was determied to be 2.024 g/cm3 at 20° C and 967.5 hPa.

Key value for chemical safety assessment

Relative density at 20C:

2.024

Additional information

The mean density of test item 2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt (CAS No. 12227-78-0) was determined following OECD Guideline 109 and according to the method adapted from ASTM D 854-02.  The mean density of the test item was determied to be 2.024 g/cm3 at 20° C and 967.5 hPa.