Octamethyltrisiloxane（CAS 107-51-7）：分子式 C8H24O2Si3、分子量 236.53；类别 有机化学品。
| CAS号 | 107-51-7 |
|---|---|
| 分子式 | C8H24O2Si3 |
| 分子量 | 236.53 |
| 应用领域 | 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]、Use Classification: Cosmetics -> Skin conditioning、Industry Uses: Intermediate、Diluent、Heat transferring agent、Other、Consumer Uses: Diluent、Household Products: Cosmetics product ingredient: Trisiloxane、octamethyl- (Octamethyltrisiloxane、Trisiloxane)、Reason for Listing: Listed as Persistent、Bioaccumulative、and Inherently Toxic to the environment by the Canadian Environmental Protection Act Environmental Registry Domestic Substances List.、Potential Health Impacts: Bioaccumulation、Environmental Persistence、and Undefined Toxicity、Product count: 124、U.S. Production: 2023: 1、000、000 - <5、000 lb、2022: 1、2021: 1、2020: 1、General Manufacturing Information: Other (requires additional information)、All Other Chemical Product and Preparation Manufacturing、Electrical Equipment、Appliance、and Component Manufacturing、All Other Basic Inorganic Chemical Manufacturing、Trisiloxane、1、3、5、5-octamethyl-: ACTIVE |
| 类别 | Organic Chemicals |
登记用途：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]、Use Classification: Cosmetics -> Skin conditioning、Industry Uses: Intermediate、Diluent、Heat transferring agent、Other、Consumer Uses: Diluent、Household Products: Cosmetics product ingredient: Trisiloxane、octamethyl- (Octamethyltrisiloxane、Trisiloxane)、Reason for Listing: Listed as Persistent、Bioaccumulative、and Inherently Toxic to the environment by the Canadian Environmental Protection Act Environmental Registry Domestic Substances List.、Potential Health Impacts: Bioaccumulation、Environmental Persistence、and Undefined Toxicity、Product count: 124、U.S. Production: 2023: 1、000、000 - <5、000 lb、2022: 1、2021: 1、2020: 1、General Manufacturing Information: Other (requires additional information)、All Other Chemical Product and Preparation Manufacturing、Electrical Equipment、Appliance、and Component Manufacturing、All Other Basic Inorganic Chemical Manufacturing、Trisiloxane、1、3、5、5-octamethyl-: ACTIVE。
Octamethyltrisiloxane 是一种以碳骨架为基础的有机化合物，登记 CAS 号为 107-51-7，分子式 C8H24O2Si3（分子量 236.53），归属于有机化学品大类化工原料。
登记 CAS 号：107-51-7
其分子式 C8H24O2Si3 由 8 个碳、24 个氢、2 个氧、3 个硅 组成。
别名/同义词：Octamethyltrisiloxane · Dimethylpolysiloxane
所属分类：有机化学品
Octamethyltrisiloxane 的 CAS 登记号为 107-51-7。
分子式 C8H24O2Si3，分子量 236.53。
别名/同义词：Octamethyltrisiloxane、Dimethylpolysiloxane。
登记用途：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]、Use Classification: Cosmetics -> Skin conditioning、Industry Uses: Intermediate、Diluent、Heat transferring agent、Other、Consumer Uses: Diluent、Household Products: Cosmetics product ingredient: Trisiloxane、octamethyl- (Octamethyltrisiloxane、Trisiloxane)、Reason for Listing: Listed as Persistent、Bioaccumulative、and Inherently Toxic to the environment by the Canadian Environmental Protection Act Environmental Registry Domestic Substances List.、Potential Health Impacts: Bioaccumulation、Environmental Persistence、and Undefined Toxicity、Product count: 124、U.S. Production: 2023: 1、000、000 - <5、000 lb、2022: 1、2021: 1、2020: 1、General Manufacturing Information: Other (requires additional information)、All Other Chemical Product and Preparation Manufacturing、Electrical Equipment、Appliance、and Component Manufacturing、All Other Basic Inorganic Chemical Manufacturing、Trisiloxane、1、3、5、5-octamethyl-: ACTIVE。
所属分类：Organic Chemicals。
Octamethyltrisiloxane（CAS 107-51-7）的独立参考数据，整理自公开化学数据库。
| CAS Registry Number | 107-51-7 |
|---|---|
| PubChem CID | 24705 |
| Molecular formula | C8H24O2Si3 |
| IUPAC name | dimethyl-bis(trimethylsilyloxy)silane |
| UNII (FDA) | 9G1ZW13R0G |
| Molecular Weight | 236.53 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 4 |
| Exact Mass | 236.10840961 |
| Monoisotopic Mass | 236.10840961 |
| Topological Polar Surface Area | 18.5 |
| Heavy Atom Count | 13 |
| Vapor Pressure | 3.34 [mmHg] |
|---|
OCTAMETHYLTRISILOXANE; 107-51-7; Trisiloxane, octamethyl-; 1,1,1,3,3,5,5,5-Octamethyltrisiloxane; dimethyl-bis(trimethylsilyloxy)silane; Pentamethyl(trimethylsilyloxy)disiloxane; DTXSID9040710; Dimethylbis(trimethylsiloxy)silane; 9G1ZW13R0G; Pentamethyl(trimethylsiloxy)disiloxane; CHEBI:9147; DTXCID7020710; RefChem:1093790; 203-497-4; Dimethicone 350; Simethicone Impurity 6
| Regulatory & Food Contact | CIR / INCI: Skin conditioning |
|---|---|
| GHS notification summary | 11.1% (49 / 443) |
| GHS notification summary | 11.1% (49 / 443) |
|---|---|
| Reported hazard statements | H226 (88.9%), H413 (27.1%) |
This chemical does not meet GHS hazard criteria for 11.1% (49 of 443) of reports.
H226 (88.9%): Flammable liquid and vapor [Warning Flammable liquids]
Octamethyltrisiloxane · CAS 107-51-7 · C8H24O2Si3. UNII 9G1ZW13R0G. Vapor Pressure: 3.34 [mmHg].
数据来源：PubChem / Wikidata；与随货 COA 不一致时以 COA 为准。
English page: Octamethyltrisiloxane