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Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15 July 2011 - 09 February 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Study conducted in accordance with International guidelines and in accordance with GLP. All guideline validity criteria were met.
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
02 October 2009
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
Commission Regulation (EC) No 440/2008 laying down test methods pursuant to Regulation (EC) No 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Specific details on test material used for the study:
RADIOLABELLING INFORMATION (if applicable)
- Radiochemical purity: N/A
- Specific activity: N/A
- Locations of the label: N/A
- Expiration date of radiochemical substance: N/A

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room temperature in the dark and under nitrogen.
- Stability under test conditions: Assumed stable.
- Solubility and stability of the test substance in the solvent/vehicle: N/A, applied as supplied.
- Reactivity of the test substance with the solvent/vehicle of the cell culture medium: N/A

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: N/A
- Preliminary purification step (if any): N/A
- Final dilution of a dissolved solid, stock liquid or gel: N/A
- Final preparation of a solid: N/A

FORM AS APPLIED IN THE TEST (if different from that of starting material) : Applied as supplied.

TYPE OF BIOCIDE/PESTICIDE FORMULATION (if applicable) : N/A

OTHER SPECIFICS: No
Key result
Type:
relative density
Density:
0.99 other: N/A
Temp.:
20 °C

Table 1       Results

Parameter

Determination 1

Determination 2

w1

22.61761

21.95510

w2

48.08514

47.40791

w3

47.90700

47.20901

W1

25.46753

25.45281

W2

25.28939

25.25391

DT4

0.99

0.99

Mean DT4

0.99

w1: mass of pycnometer empty (g)

w2: mass of pycnometer + water (g)

w3: mass of pycnometer + test item (g)

W1: mass of water to fill pycnometer (g) i.e. w2 – w1

W2: mass of test item to fill pycnometer (g) i.e. w3 – w1

DT4: relative density of the test item at the test temperature (20 ºC) compared to water at 4 ºC i.e. W2 / W1 x 0.998 (i.e. density of water at 20 ºC)

Conclusions:
The relative density of Tetraesters of pentaerythritol with 2- methylpropanoic acid and 3,5,5-trimethyl-hexanoic acid was found to be 0.99 at 20 ºC.
Executive summary:

OECD 109 (2012) - The relative density of Tetraesters of pentaerythritol with 2-methylpropanoic acid and 3,5,5-trimethyl-hexanoic acid was determined relative to purified water using a pycnometer at 20 °C. A clean, dry pycnometer was accurately weighed then filled to the limits of its capacity with pure water. It was then carefully stoppered without trapping air, dried and re-weighed. The procedure was repeated with the same pycnometer using test substance. Two tests were performed concurrently using separate pycnometers.

The relative density of Tetraesters of pentaerythritol with 2-methylpropanoic acid and 3,5,5-trimethyl-hexanoic acid was calculated to be 0.99 at 20 ºC.

Description of key information

Relative density = 0.99 at 20 ºC; OECD 109; Sydney, P. (2012)

Key value for chemical safety assessment

Relative density at 20C:
0.99

Additional information

OECD 109 (2012) - The relative density of Tetraesters of pentaerythritol with 2-methylpropanoic acid and 3,5,5-trimethyl-hexanoic acid was determined relative to purified water using a pycnometer at 20 °C. A clean, dry pycnometer was accurately weighed then filled to the limits of its capacity with pure water. It was then carefully stoppered without trapping air, dried and re-weighed. The procedure was repeated with the same pycnometer using test substance. Two tests were performed concurrently using separate pycnometers.

The relative density of Tetraesters of pentaerythritol with 2-methylpropanoic acid and 3,5,5-trimethyl-hexanoic acid was calculated to be 0.99 at 20 ºC.