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EC number: 700-043-1 | 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:
- Testing conducted between 16 May 2008 and 02 Sepetember 2008
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP and in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not effect the quality of the relevant results.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- pycnometer method
- Type:
- relative density
- Density:
- 0.972
- Temp.:
- 20 °C
- Conclusions:
- The relative density of the test material has been determined to be 0.972 at 20.0 ± °C
- Executive summary:
The relative density for SiMAA2 was determined using the pycnometer method, Method A3 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC).
The relative density of the test material has been determined to be 0.972 at 20.0 ± °C.
- Endpoint:
- relative density
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- 1. HYPOTHESIS FOR THE ANALOGUE APPROACH
It is proposed that the structural similarity and properties of the target substance and the structural analogue (sources substance) are sufficiently close for there to be a reasonable expectation of similar effects.
2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
Source chemical:
Reaction mass of 3-[3-(1,1,1,3,5,5,5-heptamethyltrisiloxan-3-yl)propoxy]-2-hydroxypropyl methacrylate and 1-[3-(1,1,1,3,5,5,5-heptamethyltrisiloxan-3-yl)propoxy]-3-hydroxypropan-2-yl methacrylate (EC 700-334-3)
Target chemical:
Reaction mass of 3-[3-(9-butyl-1,1,3,3,5,5,7,7,9,9-decamethylpentasiloxanyl)propoxy]-2-hydroxypropyl 2-methylprop-2-enoate and 1-[3-(9-butyl-1,1,3,3,5,5,7,7,9,9-decamethylpentasiloxanyl)propoxy]-3-hydroxypropan-2-yl 2-methylprop-2-enoate (EC 700-043-1)
3. ANALOGUE APPROACH JUSTIFICATION
It is concluded that the structural similarity, common functional groups and properties of the target substance and the structural analogue (sources substance) are sufficiently close for there to be a reasonable expectation of similar effects.
4. DATA MATRIX
Please see 'Read-across justification to support the REACH registration of OH-mPDMS (EC 700-043-1)' document attached in section 13. - Reason / purpose for cross-reference:
- read-across source
- Type of method:
- pycnometer method
- Type:
- relative density
- Density:
- 0.972 other: dimensionless
- Temp.:
- 20 °C
- Conclusions:
- The relative density of the test material (EC 700-334-3) has been determined to be 0.972 at 20.0 ± °C
- Executive summary:
The relative density for SiMAA2 (EC 700-334-3) was determined using the pycnometer method, Method A3 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC).
The relative density of the test material has been determined to be 0.972 at 20.0 ± °C.
Referenceopen allclose all
Results of duplicate determinations of relative density are shown in the following table;
| Measurement | Determination 1 | Determination 2 |
| Mass of Pycnometer(g) | 21.2263 | 21.2905 |
| Mass of Pycnometer and distilled H2O at 20.0 deg C | 46.1528 | 46.619 |
| Mass of Pycnomter and test material at 20.0 deg C | 45.5014 | 45.9309 |
| Density of water at 20.0 deg C (kg/m3) | 998.20 | 998.20 |
| Density (kg/m3) | 972.12 | 971.07 |
| Relative density | 0.972 | 0.971 |
mean relative density: 0.972 and temperature: 20.0 +/- 0.5 deg C
Description of key information
The density of a structurally similar analogue substance (EC 700-334-3) was determined to be 0.972.
Key value for chemical safety assessment
- Relative density at 20C:
- 0.972
Additional information
The relative density for SiMAA2 was determined using the pycnometer method, Method A3 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC).
The relative density of the test material has been determined to be 0.972 at 20.0 ± °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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
