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Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 Jan 2019
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Principles of method if other than guideline:
Density measured using a stainless steel Pycnometer Cup
GLP compliance:
no
Type of method:
pycnometer method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch number of test material: M19-0093-001
Key result
Type:
density
Density:
0.98 g/cm³
Temp.:
23.5 °C

Instrument: Stainless steel pycnometer, Analytical Instrument No. 913

Conclusions:
A density of 0.98 g/mL at room temperature (22-25°C) was observed for MTDID 18990.
Executive summary:

A stainless steel pycnometer cup was used for the determination of the density of MTDID 18990. The study was performed comparable to guideline study with acceptable restrictions (study report does not call out guideline, provides few details about study, and is not GLP compliant); therefore the study is considered reliable with restrictions.

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
disregarded due to major methodological deficiencies
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
significant methodological deficiencies
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
GLP compliance:
no
Type of method:
pycnometer method
Specific details on test material used for the study:
Material is in aqueous solution, but concentration is not stated. A 1% dilution had a pH of 2.5±0.3"
Key result
Type:
density
Density:
0.98 g/cm³
Temp.:
23 °C
Conclusions:
A density of 0.9797 g/mL at room temperature (23 °C) was observed for MTDID 18990.
Executive summary:

A stainless steel pycnometer cup was used for the determination of the density of MTDID 18990. The test material was in an acidic aqueous solution of unknown concentration and is not representative of the pure material. The study was performed using an acidified aqueous solution, which is not representive of the pure material; therefore the study is considered not reliable.

Description of key information

A density of 0.98 g/mL at room temperature (22-25°C) was observed for MTDID 18990.

Key value for chemical safety assessment

Relative density at 20C:
0.98

Additional information

A stainless steel pycnometer cup was used for the determination of the density of MTDID 18990. The study was performed comparable to guideline study with acceptable restrictions (study report does not call out guideline, provides few details about study, and is not GLP compliant); therefore the study is considered reliable with restrictions.

A second study was performed using an acidified aqueous solution, which is not representative of the pure material; therefore the study is considered not reliable and is disregarded.