基本情報
- CAS
107-51-7- 標準SMILES
C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C- InChIKey
CXQXSVUQTKDNFP-UHFFFAOYSA-N- 分子式
- C8H24O2Si3
- 平均分子量
- 236.53 g/mol
- 単同位体質量
- 236.10840961
概要
Octamethyltrisiloxane is an organosiloxane that is trisiloxane in which all the hydrogens have been replaced by methyl groups.
名称と識別子
- 優先名称
- Octamethyltrisiloxane
- IUPAC
- dimethyl-bis(trimethylsilyloxy)silane
- 現地名
- オクタメチルトリシロキサン
- 英語名
- Octamethyltrisiloxane
- 分子式
- C8H24O2Si3
- 分子量
- 236.53
名称と別名
OCTAMETHYLTRISILOXANE107-51-71,1,1,3,3,5,5,5-OctamethyltrisiloxaneTrisiloxane, octamethyl-dimethyl-bis(trimethylsilyloxy)silanePentamethyl(trimethylsilyloxy)disiloxaneDTXSID9040710Dimethylbis(trimethylsiloxy)silane9G1ZW13R0GPentamethyl(trimethylsiloxy)disiloxaneCHEBI:9147DTXCID7020710
名称をさらに表示
メチルポリシロキサンオクタメチルトリシロキサン1,1,1,3,3,5,5,5-オクタメチルペンタントリシロキサンオクタメチルペンタントリシロキサン1，1，1，3，3，5，5，5-オクタメチルトリシロキサントリシロキサンTRISILOXANEMETHYLPOLYSILOXANEO9816CO9816FRD 20KF 96A1csKF 96L1.0
RefChem:1093790203-497-4Dimethicone 350Simethicone Impurity 6Silicone oil PMX-200MFCD00008264S12475Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl-
データベース識別子
- CAS
物性
構造計算による物性
- 極性表面積
- 18.5 Ų
- 水素結合供与体数
- 0
- 水素結合受容体数
- 2
- 回転可能結合数
- 4
- 重原子数
- 13
- 形式電荷
- 0
- 複雑度
- 149
実験および物理化学的性質
Chemical ClassesMetals -> Metalloid Compounds (Silicon)
Cosmetics
Cosmetics ingredient -> Bulking/Viscosity; Conditioning/Emollient; Moisturizing/Humectant; Other (Specify); Surfactant
Skin conditioning
SpringerMaterials PropertiesSchoenflies notation
Vapor Pressure3.34 [mmHg]
Physical Description
Liquid
Liquid; [Merck Index] Colorless odorless liquid; [Acros Organics MSDS]
物理化学的性質
- 融点
- -82 °C · -82 °C (lit.)
- 沸点
- 153 °C · 153 °C (lit.)
- 比重(密度)
- 0.82 g/mL · 0.82 g/mL at 25 °C (lit.)
- 蒸気密度
- 1 · >1 (vs air)
- 蒸気圧
- 5.3 hPa · 5.3hPa at 25℃
- 屈折率
- 20 · n20/D 1.384(lit.)
- 闪点
- 99 °F · 99 °F
- 貯蔵温度
- Inert atmosphere,Room Temperature
- 溶解性
- クロロホルム（微量）、DMSO、メタノール（微量）
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
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.
危険有害性情報
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)
REACH registered substance: Octamethyltrisiloxane (EC: 203-497-4)
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.
Hazard Classes and CategoriesFlam. Liq. 3 (88.9%)
化学と産業
用途と製造
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
応用分野
使用Octamethyltrisiloxane is a linear silicone oligomer. It is used as an excipient Dimethicones in pharmaceutical and cosmetic applications can provide long lasting lubricant, smooth feel and spreads easily. Studies demonstrate that it is able to maintain the conformational stability of certain adsorbed proteins such as bovine serum albumin (BSA). Used in the methylation of mercury(II) salts.
一般的な説明Poly(dimethylsiloxane) (PDMS), also known as dimethicone, is an organosilicon compound that is widely used as a siloxane based elastomer. It is a hydrophobic material with attractive physical and chemical properties such as elasticity, optical transparency, tunable surface chemistry, and low electrical conductivity.
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