CAS 556-67-2: Octamethylcyclotetrasiloxane
Description:Octamethylcyclotetrasiloxane, commonly referred to as D4, is a cyclic siloxane compound characterized by its unique structure consisting of four silicon atoms and four oxygen atoms, forming a ring with eight methyl groups attached to the silicon atoms. This compound is a colorless, odorless liquid at room temperature and is known for its low viscosity and volatility. D4 exhibits excellent thermal stability and chemical resistance, making it useful in various applications, including personal care products, silicone polymers, and industrial lubricants. It has a relatively low surface tension, which contributes to its effectiveness as a spreading agent. However, environmental and health concerns have been raised regarding its potential bioaccumulation and endocrine-disrupting properties, leading to regulatory scrutiny in several regions. As a result, its use is being monitored and restricted in certain applications. Overall, Octamethylcyclotetrasiloxane is a versatile compound with significant industrial applications, but its environmental impact necessitates careful consideration in its use and disposal.
Formula:C8H24O4Si4
InChI:InChI=1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3
InChI key:InChIKey=HMMGMWAXVFQUOA-UHFFFAOYSA-N
SMILES:O1[Si](O[Si](O[Si](O[Si]1(C)C)(C)C)(C)C)(C)C
- Synonyms:
- 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-Tetroxatetrasilocane
- 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
- 2,2,4,4,6,6,8,8-Octamethylcyclotetrasiloxane
- Abil K 4
- Additive 8030
- Cyclic dimethylsiloxane tetramer
- Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octamethyl-
- Cyclotetrasiloxane, octamethyl-
- D 4
- D4
- See more synonyms
- Dabco DC 5258
- Dc 244
- Dc 344
- Dc 5258
- Dow Corning 244
- Dow Corning 244 Fluid
- Dow Corning 344
- Dwq 110
- Dwq 120
- Kf 994
- L 6907
- Ls 8620
- Mirasil CM 4
- NUC Silicone VS 7207
- Nsc 345674
- Octamethyl cyclotetrasilazane
- Octamethylcyclotetrasiloxan
- Octamethylcyclotetrasiloxane
- Octamethylcyclotetrasiloxanes
- Octametilciclotetrasiloxano
- Octaphenyl Silsesquioxane
- Pmx 0110
- SH 244 Fluid
- Sf 1173
- Sh 244
- Sh 30
- Sh 344
- Silbione 70045V2
- Silbione V 2
- Tetracyclomethicone
- Tsf 404
- Uc 7207
- Union Carbide 7207
- Volasil 244
- Vs 7207
- Xf 3803
- Y 7175
- Yf 393
- Zbh 270
