Registration Dossier
Registration Dossier
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EC number: 952-967-1 | CAS number: -
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2010-04-13 to 2010-04-14
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- GLP guideline study reliable without restrictions
- Justification for type of information:
- Disodium titanate substance (EC 234-802-9) has the molecular formula Na2TiO3 and its composition is expressed as (Na2O)x(TiO2), where x is ranging from 0.1 to 6 according to the SIP. This substance, Reaction mass of Disodium Hexatitanate and Sodium Metatitanate, has a value of x = 0.21, calculated from XRF results, has been identified as a mixture of two specific types of disodium titanate and is therefore within the scope of the disodium titanate SIP. It is assessed therefore that disodium titanate is an acceptable read-across substance for Reaction mass of Disodium Hexatitanate and Sodium Metatitanate
- 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
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 66137-2 (2004): Determination of solid state density, Part 2: Gaspycnometry
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- signed, 2009-10-29
- Type of method:
- air comparison pycnometer (for solids)
- Key result
- Type:
- density
- Density:
- 2.765 g/cm³
- Remarks on result:
- other: At ambient temperature of 22.4 °C to 23.4 °C ± 0.2 °C
- Key result
- Type:
- relative density
- Density:
- 2.77 other: no units for RD
- Remarks on result:
- other: At ambient temperature of 22.4 °C to 23.4 °C ± 0.2 °C
- Conclusions:
- The mean density for the two test series is: 2.7651 g/cm3.
The relative density at ambient temperature (compared to water at 4 °C) is D4R=2.8. The ambient temperature was determined to be 22.4 °C to 23.4 °C ± 0.2 °C. According to the European Commission Regulation (EC) No. 440/2008, A.3., solids can be measured at ambient temperature (20 – 25 °C).
Reference
First test series:
Weight 6.1196 |
p1 / psi |
p2 / psi |
Volume / cm3 |
Density(g/cm3) |
1. measurement |
19.700 |
12.234 |
2.2159 |
2.7616 |
2. measurement |
19.605 |
12.175 |
2.2159 |
2.7616 |
3. measurement |
19.576 |
12.157 |
2.2159 |
2.7617 |
Mean |
|
|
2.2159 |
2.7617 |
Second test series:
Weight 5.1900 |
p1 / psi |
p2 / psi |
Volume / cm3 |
Density (g/cm3) |
1. measurement |
19.544 |
12.185 |
1.8598 |
2.7906 |
2. measurement |
19.675 |
12.262 |
1.8946 |
2.7394 |
3. measurement |
19.689 |
12.274 |
1.8702 |
2.7750 |
Mean |
|
|
1.8749 |
2.7684 |
Mean density for the two test series: 2.7651 g/cm3
Relative density: 2.7651 (g/cm3) / 1.000 (g/cm3) = 2.77
Description of key information
The relative density of disodium titanate is 2.8. The ambient temperature was determined to be 22.4 °C to 23.4 °C. According to the European Commission Regulation (EC) No. 440/2008, A.3., solids can be measured at ambient temperature (20 – 25 °C).
Key value for chemical safety assessment
- Relative density at 20C:
- 2.8
Additional information
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