Registration Dossier
Registration Dossier
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EC number: 231-823-5 | CAS number: 7757-86-0
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- Testing was conducted on 18 March 2010.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- This study is conducted according to an appropriate method and under the conditions of GLP and therefore the study is considered to be acceptable and to adequately satisfy the regulatory requirement as a key study for this endpoint. The rationale for reliability has not been amended despite the use as read across data. This approach is justified on the basis that although the test material is a hydrated form of the substance to be registered, the relevant study observations / measurements have been made with a view to determining the properties on the anhydrous magnesium hydrogenorthophosphate.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- (Date of GLP inspection: 2009-09-15 Date of Signature on GLP certificate: 2009-11-26)
- Type of method:
- air comparison pycnometer (for solids)
- Type:
- relative density
- Density:
- 2.17
- Temp.:
- 21.5 °C
- Conclusions:
- The relative density of the test item has been determined to be 2.17 at 21.5 ± 0.5°C.
- Executive summary:
.
Reference
Results
Calibration
The pressure readings (P1and P2) and the calculated volume for the calibration ball are shown in the following table:
Determination |
P1 |
P2 |
Volume (cm3) |
Certified Volume (cm3) |
Tolerance (cm3) |
A |
17.457 |
6.827 |
1.052 |
1.073 |
± 0.05 |
B |
17.210 |
6.734 |
1.062 |
1.073 |
± 0.05 |
C |
17.250 |
6.749 |
1.061 |
1.073 |
± 0.05 |
D |
17.258 |
6.753 |
1.063 |
1.073 |
± 0.05 |
Sample
The pressure readings, calculated volumes and density values obtained for the test item are shown in the following table:
Determination |
P1 |
P2 |
Volume (cm3) |
Density (kg/m3) |
A |
17.360 |
6.612 |
0.542 |
2173.5 |
B |
17.135 |
6.526 |
0.541 |
2168.1 |
Temperature: 21.5 ± 0.5ºC
Mean density: 2170.8 kg/m3
Relative density: 2.17
Description of key information
Relative density: 2.17 at 21.5°C (EU Method A.3, GLP)
Key value for chemical safety assessment
Additional information
The relative density of the test item has been determined to be 2.17 at 21.5 ± 0.5°C.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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