Octamethyltrisiloxane
Grundinformationen
- CAS
42557-10-8- Standard-SMILES
C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C- InChIKey
CXQXSVUQTKDNFP-UHFFFAOYSA-N- Summenformel
- C8H24O2Si3
- Durchschnittliche Molmasse
- 236,53 g/mol
Überblick
Octamethyltrisiloxane is an organosiloxane that is trisiloxane in which all the hydrogens have been replaced by methyl groups.
Namen und Bezeichner
- Bevorzugter Name
- Octamethyltrisiloxane
- IUPAC
- dimethyl-bis(trimethylsilyloxy)silane
- Englischer Name
- BAYSILONE OIL M30000
- Summenformel
- (C2H6OSi)nC6H18OSi2
- Molmasse
- 0
Namen und Synonyme
OCTAMETHYLTRISILOXANE107-51-7Trisiloxane, octamethyl-1,1,1,3,3,5,5,5-Octamethyltrisiloxanedimethyl-bis(trimethylsilyloxy)silanePentamethyl(trimethylsilyloxy)disiloxaneDTXSID9040710Dimethylbis(trimethylsiloxy)silane9G1ZW13R0GPentamethyl(trimethylsiloxy)disiloxaneCHEBI:9147DTXCID7020710
Weitere Namen anzeigen
Baysilone? oilBaysilone(R) oil M30000α-(TriMethylsilyl)-ω-(triMethylsilyloxy) polydiMethylsiloxanePoly(oxy(dimethylsilylene)), alpha-(trimethylsilyl)-omega-((trimethylsilyl)oxy)-Baysilone(R) oil, Silicon oil Baysilone(R), α-(Trimethylsilyl)-ω-(trimethylsilyloxy) polydimethylsiloxane
RefChem:1093790203-497-4Dimethicone 350Simethicone Impurity 6Silicone oil PMX-200MFCD00008264S12475Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl-
Datenbank-Bezeichner
- CAS
42557-10-8- ChEMBL
CHEMBL2142985- ChEBI
CHEBI:9147- UNII
- 9G1ZW13R0G
- EC Number
- 203-497-4
- Nikkaji
- J99.786B
Eigenschaften
Berechnete Struktureigenschaften
- Polarare Oberfläche (TPSA)
- 18,5 Ų
- H-Brücken-Donoren
- 0
- H-Brücken-Akzeptoren
- 2
- Frei drehbare Bindungen
- 4
- Schwere Atome
- 13
- Formalladung
- 0
- Komplexität
- 149
Experimentelle und physikochemische Eigenschaften
Chemical ClassesMetals -> Metalloid Compounds (Silicon)
CosmeticsSkin conditioning
SpringerMaterials PropertiesSchoenflies notation
Vapor Pressure3.34 [mmHg]
Physical Description
Liquid
Liquid; [Merck Index] Colorless odorless liquid; [Acros Organics MSDS]
Physikochemische Eigenschaften
- Schmelzpunkt
- -42.4 °C · -42.4 °C
- Dichte
- 0.97 g/cm3 · 0.97 g/cm3
- Löslichkeit
- most chlorinated, hydrocarbon, or ethereal solvents. Insoluble in MeOH, EtOH, glycerol, and water. Limited solubility in DMF and DMSO.
- EPA chemische Informationen
- Poly[oxy(dimethylsilylene)], .alpha.-(trimethylsilyl)-.omega.-[(trimethylsilyl)oxy]- (42557-10-8)
Sicherheit und Regulatorisches
Sicherheitsangaben dienen nur zur Orientierung und ersetzen weder das Sicherheitsdatenblatt (SDB) des Lieferanten noch geltende Vorschriften oder eine fachliche Bewertung.
GHS-Klassifizierung
GHS Classification
This chemical does not meet GHS hazard criteria for 11.1% (49 of 443) of reports.
Warning
H226 (88.9%): Flammable liquid and vapor [Warning Flammable liquids]
P210, P233, P240, P241, P242, P243, P273, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 443 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Gefahrenhinweise
Regulatory Information
Chemical: Trisiloxane, octamethyl-
Hazard Traits - Bioaccumulation; Environmental Persistence
Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 21-06-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/16055
Substance: Octamethyltrisiloxane
Trisiloxane, octamethyl-: Does not have an individual approval but may be used under an appropriate group standard
Other Safety InformationIMAP assessments - Trisiloxane, octamethyl-: Human health tier II assessment
Hazards Summary
Causes histopathological liver changes at 1,000 mg/kg/day in 28-day oral study of rats; [EPA - TSCATS] No evidence of skin sensitization in human patch test studies; [ToxPlanet: Government of Canada - Chemicals Management Plan] May cause temporary redness and discomfort on eye contact; May cause CNS depression; [Acros Organics MSDS] See Tetrakis(trimethylsiloxy)silane. See Dimethoxydimethylsilane.
Chemie und Industrie
Verwendung und Herstellung
Uses
Used as a base for extreme temperature silicone oils/fluids and as a foam suppressant in petroleum lubricating oils; [Merck Index] Used mainly to make polydimethylsiloxane (PDMS) polymers, oligomers, and mixtures; Also used to make basic chemicals, paints, coatings, adhesives, soaps, cleaning compounds, toiletries, plastics, semiconductors, and other electronic components, and in building construction, lubricants, diluents, solvents, and cosmetics; [Government of Canada - Chemicals Management Plan]
Semiconductor Manufacturing [Category: Industry]
U.S. Production2023: 1,000,000 - <5,000,000 lb
Consumer UsesDiluent
Industry UsesIntermediate
Household ProductsCosmetics product ingredient: Trisiloxane, octamethyl- (Octamethyltrisiloxane; Trisiloxane)
Use ClassificationCosmetics -> Skin conditioning
General Manufacturing Information
Other (requires additional information)
Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl-: ACTIVE
Anwendungen
VerwendenPDMS Thimbles can be used in Differential Flux of Reagents and Catalysts ThroughPDMS Thimbles. In summary, a wide variety of organic molecules with various functional groups flux throughPDMSthimbles, but care should be taken to consider the solvent, thickness of the walls, temperature, and the presence of any ionic functional group.
Darstellung
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