1,3,5,7-Tetramethylcyclotetrasiloxane
Grundinformationen
- CAS
2370-88-9- Standard-SMILES
C[SiH]1O[SiH](C)O[SiH](C)O[SiH](C)O1- InChIKey
BQYPERTZJDZBIR-UHFFFAOYSA-N- Summenformel
- C4H16O4Si4
- Durchschnittliche Molmasse
- 240,51 g/mol
- Monoisotopische Masse
- 240,01256511
Namen und Bezeichner
- Bevorzugter Name
- 1,3,5,7-Tetramethylcyclotetrasiloxane
- IUPAC
- 2,4,6,8-tetramethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
- Englischer Name
- 2,4,6,8-Tetramethylcyclotetrasiloxane
- Summenformel
- C4H16O4Si4
- Molmasse
- 240.51
Namen und Synonyme
RefChem:1052543DTXCID70818634219-137-41,3,5,7-Tetramethylcyclotetrasiloxane2,4,6,8-Tetramethylcyclotetrasiloxane2370-88-9Cyclotetrasiloxane, 2,4,6,8-tetramethyl-DTXSID108709582,4,6,8-Tetramethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocaneSCHEMBL36002C4H16O4Si42,4,6,8-Tetramethylcyclotetrasiloxne
Weitere Namen anzeigen
D4HTMCTSTetramethylcyclotetrasiloxaneH-4H4RHH4RDK690SP9144
2,4,6,8-tetramethyl-cyclotetrasiloxaneNS00048765D8788627576-78-9
Datenbank-Bezeichner
- CAS
2370-88-9- PubChem CID
- 75404
- DTXSID
DTXSID10870958- EC Number
- 219-137-4
Eigenschaften
Berechnete Struktureigenschaften
- Polarare Oberfläche (TPSA)
- 36,9 Ų
- H-Brücken-Donoren
- 0
- H-Brücken-Akzeptoren
- 4
- Frei drehbare Bindungen
- 0
- Schwere Atome
- 12
- Formalladung
- 0
- Komplexität
- 99
Experimentelle und physikochemische Eigenschaften
Chemical ClassesMetals -> Metalloid Compounds (Silicon)
SpringerMaterials PropertiesOptical coefficient
Vapor Pressure7.02 [mmHg]
Physical Description
Liquid
Colorless liquid with an odor like ether; [Air Products MSDS]
Physikochemische Eigenschaften
- Schmelzpunkt
- 69 °C · −69 °C (lit.)
- Siedepunkt
- 134 °C · 134 °C
- Dichte
- 0.99 · 0.99
- Dampfdruck
- 0.05 · 0.05-479Pa at 20℃
- Brechungsindex
- 1.39 · 1.39
- Flammpunkt
- 24 °C · 24 °C
- storage temp.
- 2 · 2-8°C
- Aggregatzustand
- clear liquid
- Farbe
- Colorless to Almost colorless
- Wichte
- 0.991 · 0.991
- Wasserlöslichkeit
- Miscible with most organic solvents. Immiscible with water.
- BRN
- 1787074 · 1787074
- InChI
- 1S/C4H16O4Si4/c1-9-5-10(2)7-12(4)8-11(3)6-9/h9-12H,1-4H3
- InChIKey
- BQYPERTZJDZBIR-UHFFFAOYSA-N
- SMILES
- C[SiH]1O[SiH](C)O[SiH](C)O[SiH](C)O1
- LogP
- -2.4 · -2.4-5.54 at 25℃
- CAS Datenbank
- 2370 · 2370-88-9(CAS DataBase Reference)
- EPA chemische Informationen
- 2 · Cyclotetrasiloxane, 2,4,6,8-tetramethyl- (2370-88-9)
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
Warning
H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]
P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 2298 reports by companies from 5 notifications to the ECHA C&L Inventory.
Gefahrenhinweise
Regulatory Information
Chemical: Cyclotetrasiloxane, 2,4,6,8-tetramethyl-
Cyclotetrasiloxane, 2,4,6,8-tetramethyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Cyclotetrasiloxane, 2,4,6,8-tetramethyl- 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: 15-07-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/15844
Cyclotetrasiloxane, 2,4,6,8-tetramethyl-: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Hazards SummaryDecomposed by water (may evolve hydrogen gas); An irritant; Harmful by ingestion and skin absorption; [Air Products MSDS] See Octamethylcyclotetrasiloxane.
Hazard Classes and CategoriesFlam. Liq. 3 (100%)
Sicherheitsdaten
- F
- 10-21
- wgk
- 3
- tsca
- TSCA listed
- ridadr
- UN 1993 3/PG 3
- hs_code
- 29319090
- risk_code
- 10-36
- hazard_code
- Xi
- safety_code
- 16-26-36
- hazard_class
- 3
- packing_group
- III
- Speicherklasse
- 3 - Flammable liquids
- Hazard Classifications
- Flam. Liq. 3
Chemie und Industrie
Verwendung und Herstellung
Uses
Used in semiconductor processing; [Air Products MSDS]
Semiconductor Manufacturing [Category: Industry]
U.S. Production2023: 50,000 - <250,000 lb
Industry UsesIntermediate
General Manufacturing Information
All Other Basic Inorganic Chemical Manufacturing
Cyclotetrasiloxane, 2,4,6,8-tetramethyl-: ACTIVE
Anwendungen
Beschreibung2, 4, 6, 8-TETRAMETHYLCYCLOTETRASILOXANE can be used as the precursor for the deposition of polysiloxane, cyclic siloxane, silicon dioxide, and gate dielectrics in thin-film transistors (TFT) (for example, for the preparation of ultralow dielectric constant pSiCOH film), and is a component of photochemically formed SiOX monolayers on TiO. It is a good impregnant of photoelectric material. It can be used for the manufacturing of modified siloxane with defined hydrogen content and chain quality.
Verwenden2,4,6,8-Tetramethylcyclotetrasiloxane can occur addition reaction with unsaturated alkenes, so it’s utilized widely to synthesize variety functional reactive silicone fluids which is used to form silicone block copolymer, or used as crosslinker of vinyl addition silicone rubber. Tetramethyl-cyclotetrasiloxane is a good impregnant of photoelectric material. It is used to manufacture of modified siloxane with defined hydrogen content and chain quantity. It is also used in production of silicone polymers and acts as a precursor for the deposition of polysiloxane, cyclic siloxane, silicon dioxide, oxycarbide thin films with low dielectric constant for microelectronics and semiconductors.
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