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EC number: 221-906-4 | CAS number: 3277-26-7
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Stability: thermal, sunlight, metals
Administrative data
- Endpoint:
- stability: thermal, sunlight, metals, other
- Remarks:
- Migrated from section 'Stability: thermal, sunlight, metals'
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2007
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- The test was performed on the basis of the mentioned guidelines with minor modifications. The test was conducted by well experienced staff of a safety laboratory that routinely conducts this type of testing. Protocols for testing procedures are in place.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
- Principles of method if other than guideline:
- DSC:
a) DIN 51005
Thermische Analyse (TA), Begriffe, 8/2005
b) DIN 53765
Prüfung von Kunststoffen und Elastomeren, Thermische Analyse, Dynamische Differenzkalorimetrie (DDK), 3/1994
c) DIN EN ISO 11357-1
Kunststoffe, Dynamische Differenz-Thermoanalyse (DSC), Teil 1: Allgemeine Grundlagen, 4/2008
d) ISO 11357-2
Plastics – Differential scanning calorimetry (DSC) – Part 2: Determination of glass transition temperature, 3/1999
e) ISO 11357-3 AMD 1
Kunststoffe – Dynamische Differenzkalorimetrie (DDK) – Teil 3: Bestimmung der Schmelz- und Kristallisationstemperatur und der Schmelz- und
Kristallisationsenthalpie, 7/2005
f) ISO 11357-4
Kunststoffe – Dynamische Differenz-Thermoanalyse (DSC) – Teil 4: Bestimmung der spezifischen Wärmekapazität, 9/2005
g) ISO 11357-5
Plastics – Differential scanning calorimetry (DSC) – Part 5: Determination of characteristic reaction-curve temperatures and times, enthalpy of
reaction and degree of conversion, 12/1999
Zersetzungsprüfung im offenen Reagenzglas:
a) VDI 2263, Blatt 1
VDI Richtlinien: Staubbrände und Staubexplosionen, Gefahren – Beurteilung – Schutzmaßnahmen, Untersuchungsmethoden zur Ermittlung von
sicherheitstechnischen Kenngrößen von Stäuben, 5/1990
Zersetzungsprüfung im Autoklaven:
a) Prüfung auf Exothermie und Druckaufbau im geschlossenen Gefäß, Mini-Autoklav, Fa. Kühner AG, incl. Prüfvorschrift und Beschreibung,
b) VDI 2263, Blatt 1
VDI Richtlinien: Staubbrände und Staubexplosionen, Gefahren – Beurteilung – Schutzmaßnahmen, Untersuchungsmethoden zur Ermittlung von
sicherheitstechnischen Kenngrößen von Stäuben, 5/1990
c) T. Grewer, Thermal Hazards of Chemical Reactions, Industrial Safety Series, Volume 4, Elsevier Science B. V., Amsterdam, 1994, S. 138 und 139 - GLP compliance:
- no
Test material
- Reference substance name:
- 1,1,3,3-tetramethyldisiloxane
- EC Number:
- 221-906-4
- EC Name:
- 1,1,3,3-tetramethyldisiloxane
- Cas Number:
- 3277-26-7
- Molecular formula:
- C4H14OSi2
- IUPAC Name:
- 1,1,3,3-tetramethyldisiloxane
Constituent 1
Results and discussion
For thermal stability study
Operating temperatureopen allclose all
- Operating temp.:
- ca. 22 °C
- Remarks on result:
- other: Zersetzungsprüfung im Autoklaven: ab Raumtemperatur kontinuierlicher Druckaufbau bei einer Heizrate von 0,6 °C/min
- Operating temp.:
- > 105 °C
- Remarks on result:
- other: Differential-Scanning-Calorimetry (DSC): ab ca. 105 °C schwache Exothermie und ab ca. 204 °C exothermer Verlauf bei einer Heizrate von 5 °C/min im geschlossenen Gold-Tiegel
- Operating temp.:
- > 71 °C
- Remarks on result:
- other: Zersetzungsprüfung im offenen Reagenzglas (Induktion): (Kp 1013 mbar)/24 h
- Sublimation:
- not determined
- Transformation products:
- not specified
For study on stability to sunlight
- Test substance stable to sunlight:
- not determined
For study on stability to metals
- Test substance stable to metals / metal ions:
- not determined
Applicant's summary and conclusion
- Conclusions:
- Die Maximaltemperatur der Handhabung aus Sicherheitsgründen (TmaxSi) für 1,1,3,3-Tetramethyl-Disiloxan wird mit 40 °C/24 h festgelegt.
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