Registration Dossier
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EC number: 215-170-3 | CAS number: 1309-42-8
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Remarks:
- density and relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 19-03-2010 to 15-06-2010
- 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)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- pycnometer method
- Specific details on test material used for the study:
- - Name: Magnesium hydroxide
- Batch no. 20BR0026
- CAS No.: 1309-42-8
- Purity: 99.9 %
- Expiry date: 31 January 2012
- Storage Room Temp. in the dark - Key result
- Type:
- density
- Density:
- 2.41 g/cm³
- Temp.:
- 20 °C
- Key result
- Type:
- relative density
- Density:
- 2.41
- Temp.:
- 20 °C
- Conclusions:
- The density and relevant density of the test substance was determined to be 2.41 g/cm3 at 20 °C and 2.41, respectively.
- Executive summary:
In a GLP guideline study according to OECD 109 and EEC A.3, the density and relative density of Magnesium hydroxide was investigated.
A gas comparison pycnometer was used for the determination of the density and relative density of magnesium hydroxide. The density of the test substance at 20 °C was 2.41 g/cm3 (2.41 x 103kg/m3). The relative density was 2.41.
Reference
The results of the tests on the determination of the density of the test substance are given in Table 1.
The individual measurements were obtained with an accuracy of < 0.02 g/cm3. According to the guideline, the density of the test substance is given as the mean value.
Table 1. Density of the test substance
| Test 1 | Test 2 | Mean | |
| Density (g/cm3) | 2.396 | 2.416 | 2.406 |
Description of key information
The relevant density of the substance was determined to be 2.41 g/ cm3 at 20 °C.
Key value for chemical safety assessment
- Relative density at 20C:
- 2.41
Additional information
A gas comparison pycnometer was used for the determination of the density and relative density of magnesium hydroxide. The density of the test substance at 20 °C was 2.41 g/cm3 (2.41 x 103 kg/m3). The relative density was 2.41.
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