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Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

08 Apr 2019

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

GLP compliance:

no

Type of method:

air comparison pycnometer (for solids)

Type:

relative density

Density:

1.559 other: dimensionless

Temp.:

20 °C

Relative Density

Two tests with different amounts of the test item were performed to determine the relative density D₄²⁰ at a temperature of 20 °C ± 0.01 °C.

Table1:      Results of the measurement of the density of the test item

Test No.	Temperature [°C]	Amount of test item [g]	Average sample volume [cm³]	Density [g/cm³]*
1	20	10.16153	6.50814	1.56136
2	20	9.84355	6.32388	1.55657

* The pressurizing-expansion cycles are performed until 5 subsequent volume measurements have a relative standard deviation (RSD) of ≤ 0.2 %.

The mean density of the test item at 20 °C is 1.5590 g/cm³. The relative density D₄²⁰ is calculated by dividing the density of the test item by the density of water at 4 °C (0.9999750 g/cm³).

The relative density is D₄²⁰ = 1.559.

Final Results

According to OECD Test Guideline 109 (2012), Regulation EC No. 440/2008 Method A.3. and EPA OCSPP Test Guideline 830.7300 (2002), the relative density D₄²⁰of the test item DMPSA-K₂ at 20 °C ± 0.01 °C (compared to water at 4 °C) is D₄²⁰ = 1.559.

 

 

Description of key information

1.559 at 20 °C (pycnometer method, OECD 109)

Key value for chemical safety assessment

Relative density at 20C:

1.559