Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019
Report date:
2019

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
not specified
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Reference substance name:
amporphous glass fibre formed from the melting and fiberisation of predominately slilcon dioxide, calcium oxide, magnesium oxide
EC Number:
610-130-5
Cas Number:
436083-99-7
Molecular formula:
Amorphous glass consisting of SinO(3n-1)2(n-1) Polymeric anions ionically bonded to Ca2+ and Mg2+ cations or other alkaline earth cations
IUPAC Name:
amporphous glass fibre formed from the melting and fiberisation of predominately slilcon dioxide, calcium oxide, magnesium oxide
Details on test material:
- Name of test material (as cited in study report): AES Covance
- Substance type: Inorganic
- Physical state: Solid
- Analytical purity: >99%
- Impurities (identity and concentrations): trace impurities
- Purity test date: 14/12/09
- Lot/batch No.: BG-10-X99-2981
- Expiration date of the lot/batch: 31/12/2020
- Stability under test conditions: stable
- Storage condition of test material: room temperature, sealed container
Specific details on test material used for the study:
AES sample milled to powder, 50mg of powder used

Results and discussion

Melting / freezing point
Key result
Melting / freezing pt.:
> 350 °C

Any other information on results incl. tables

Polyethylene oxide used as a control sample in this case as it has a clear endothermic peak, due to

melting. The peak is clearly visible from around 70C . In comparison the AES shows a static line with no activity,

indicating that below 350C , these fibres are not melting.

Applicant's summary and conclusion

Conclusions:
AES fibres show a static line indicating that below 350C there is no melting.