基本情報
- CAS
2370-88-9- 標準SMILES
C[SiH]1O[SiH](C)O[SiH](C)O[SiH](C)O1- InChIKey
BQYPERTZJDZBIR-UHFFFAOYSA-N- 分子式
- C4H16O4Si4
- 平均分子量
- 240.51 g/mol
- 単同位体質量
- 240.01256511
名称と識別子
- 優先名称
- 1,3,5,7-Tetramethylcyclotetrasiloxane
- IUPAC
- 2,4,6,8-tetramethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
- 現地名
- 1,3,5,7-テトラメチル-1,3,5,7-テトラシラ-2,4,6,8-テトラオキサシクロオクタン
- 英語名
- 2,4,6,8-Tetramethylcyclotetrasiloxane
- 分子式
- C4H16O4Si4
- 分子量
- 240.51
名称と別名
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
名称をさらに表示
1,3,5,7-テトラメチルシクロテトラシロキサン2,4,6,8-テトラメチルシクロオクタテトラシロキサン2,4,6,8-テトラメチル-1,3,5,7-テトラオキサ-2,4,6,8-テトラシラシクロオクタン1,3,5,7-テトラメチル-2,4,6,8-テトラオキサ-1,3,5,7-テトラシラシクロオクタン2,4,6,8-テトラメチルシクロオクタンテトラシロキサンテトラメチルシクロテトラシロキサン2,4,6,8-テトラメチルシクロテトラシロキサン1,3,5,7-テトラメチル-1,3,5,7-テトラシラ-2,4,6,8-テトラオキサシクロオクタン2,4,6,8-テトラメチルシクロテトラシロキサン, 99%D4HTMCTSTetramethylcyclotetrasiloxaneH-4H4RHH4RDK690SP9144
2,4,6,8-tetramethyl-cyclotetrasiloxaneNS00048765D8788627576-78-9
物性
構造計算による物性
- 極性表面積
- 36.9 Ų
- 水素結合供与体数
- 0
- 水素結合受容体数
- 4
- 回転可能結合数
- 0
- 重原子数
- 12
- 形式電荷
- 0
- 複雑度
- 99
実験および物理化学的性質
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]
物理化学的性質
- 融点
- 69 °C · −69 °C (lit.)
- 沸点
- 134 °C · 134 °C
- 比重(密度)
- 0.99 · 0.99
- 蒸気圧
- 0.05 · 0.05-479Pa at 20℃
- 屈折率
- 1.39 · 1.39
- 闪点
- 24 °C · 24 °C
- 貯蔵温度
- 2 · 2-8°C
- 外見
- clear liquid
- 色
- Colorless to Almost colorless
- 比重
- 0.991 · 0.991
- 水溶解度
- ほとんどの有機溶剤と混和します。水と混和しない。
- BRN
- 1787074 · 1787074
- InChI
- 1S/C4H16O4Si4/c1-9-5-10(2)7-12(4)8-11(3)6-9/h9-12H,1-4H3
安全と法規制
安全情報は参考情報です。供給元の安全データシート（SDS）、適用法令、専門家による評価に代わるものではありません。
GHS分類
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.
危険有害性情報
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%)
安全データ
- F
- 10-21
- wgk
- 3
- tsca
- TSCA listed
- ridadr
- UN 1993 3/PG 3
- hs_code
- 29319090
- risk_code
- 10-36
- 化審法
化学と産業
用途と製造
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
応用分野
説明2, 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.
使用2,4,6,8-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.
一般的な説明Atomic number of base material: 14 Silicon
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上流原料
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