Registration Dossier
Registration Dossier
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EC number: 232-221-5 | CAS number: 7790-76-3
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 26 Oct - 13 Nov 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP-Guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- air comparison pycnometer (for solids)
- Type:
- relative density
- Density:
- 2.866 g/cm³
- Temp.:
- 20 °C
- Conclusions:
- In conclusion, the relative density of Dicalcium pyrophosphate (CAS 7790-76-3, EC 232-221-5) was determined to be 2.866.
Reference
The relative density of Dicalcium pyrophosphate (CAS 7790-76-3, EC 232-221-5) was determined using the gas comparison method at a temperature of 20 °Cwith a maximum deviation of + 0.6 °C.
The determination of the relative density was performed by three-fold measurements of two independent test item samples. The individual readings are summarised in Table 1.
The density of Dicalcium pyrophosphate (CAS 7790-76-3, EC 232-221-5) was determined to be 2.866 g/cm³ (= 2866 kg/m³) at 20 °C.
Table 1. Determination of theDensity of Dicalcium pyrophosphate (CAS 7790-76-3, EC 232-221-5)
| measurement | temperature | sample cell (empty) | sample cell (filled) | amount of test item | pressure p1 | pressure p2 | sample volume | density |
| [°C] | [g] | [g] | [g] | [psi] | [psi] | [cm3] | [g/cm3] | |
| 1 | 20,6 | 4,1160 | 18,3321 | 14,216 | 15,171 | 5,000 | 4,954 | 2,869 |
| 2 | 20,6 | 14,216 | 15,117 | 4,983 | 4,960 | 2,866 | ||
| 3 | 20,6 | 14,216 | 15,085 | 4,972 | 4,957 | 2,868 | ||
| mean: | 2,868 | |||||||
| SD: | 0,15% | |||||||
| 4 | 20,6 | 4,1160 | 18,6335 | 14,518 | 15,111 | 4,997 | 5,073 | 2,862 |
| 5 | 20,6 | 14,518 | 15,153 | 5,010 | 5,067 | 2,865 | ||
| 6 | 20,6 | 14,518 | 15,103 | 4,994 | 5,071 | 2,863 | ||
| mean: | 2,863 | |||||||
| SD: | 0,15% | |||||||
| mean: | 2,866 | |||||||
| SD: | 0,003 |
Description of key information
Relative density: 2.866 g/cm³ at 20 ± 0.6 °C (OECD 109, GLP)
Key value for chemical safety assessment
- Relative density at 20C:
- 2.866
Additional information
The relative density of Dicalcium pyrophosphate (CAS 7790-76-3, EC 232-221-5) was determined in accordance with OECD Guideline 109 and GLP using the gas comparison method at a temperature of 20 °C with a maximum deviation of + 0.6 °C (Wagner-Rivas, 2015). The determination of the relative density was performed by three-fold measurements of two independent test item samples.
The density of Dicalcium pyrophosphate (CAS 7790-76-3, EC 232-221-5) was determined to be 2.866 g/cm³ (= 2866 kg/m³) at 20 °C.
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