18547-30-3

Basic information

• Product Name: 2,2,7,7,9,9,14,14-octamethyl-3,8,13-trioxa-2,7,9,14-tetrasilapentadecane
• Synonyms: 2,2,7,7,9,9,14,14-octamethyl-3,8,13-trioxa-2,7,9,14-tetrasilapentadecane;Einecs 242-418-8
• CAS NO: 18547-30-3
• Molecular Formula: C₁₆H₄₂O₃Si₄
• Molecular Weight: 394.84488
• EINECS: 242-418-8
• Mol File: 18547-30-3.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 337.9°Cat760mmHg
• Flash Point: 143.1°C
• Appearance: /
• Density: 0.868g/cm³
• Vapor Pressure: 0.0002mmHg at 25°C
• Refractive Index: 1.425
• CAS DataBase Reference: 2,2,7,7,9,9,14,14-octamethyl-3,8,13-trioxa-2,7,9,14-tetrasilapentadecane(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2,7,7,9,9,14,14-octamethyl-3,8,13-trioxa-2,7,9,14-tetrasilapentadecane(18547-30-3)
• EPA Substance Registry System: 2,2,7,7,9,9,14,14-octamethyl-3,8,13-trioxa-2,7,9,14-tetrasilapentadecane(18547-30-3)

Safety Data

• Hazardous Substances Data: 18547-30-3(Hazardous Substances Data)

Usage

General Description

2,2,7,7,9,9,14,14-octamethyl-3,8,13-trioxa-2,7,9,14-tetrasilapentadecane is a chemical compound with a unique structure containing four silicon atoms, three oxygen atoms, and eight methyl groups. Its molecular formula is C16H44O3Si4 and it has a molecular weight of 408.975 g/mol. 2,2,7,7,9,9,14,14-octamethyl-3,8,13-trioxa-2,7,9,14-tetrasilapentadecane is commonly used as a lubricant additive and in the production of silicone-based materials. It is known for its heat-resistant and insulating properties, making it useful in various industrial applications. Additionally, its unique structure and properties make it a valuable component in the development of advanced materials and technologies.

InChI:InChI=1/C16H42O3Si4/c1-20(2,3)17-13-11-15-22(7,8)19-23(9,10)16-12-14-18-21(4,5)6/h11-16H2,1-10H3

Upstream product

• 18146-00-4 allyloxytrimethylsilane 
• 3277-26-7 1,1,3,3-Tetramethyldisiloxane 

Downstream Products

• 18001-97-3 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol 
• 94592-98-0 l'hydroxypropyl-1,1,3,3,3-pentamethyldisiloxane 

Relevant articles and documents

Microwave-assisted synthesis of 1,3-bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane

1,3-Bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane was synthesized under microwave irradiation. The structure of the compound was analyzed by infrared spectroscopy, nuclear magnetic resonance hydrogen spectroscopy and gas chromatography. The optimal reaction condition was obtained by the single factor method. Under the optimal condition, the overall yield could reach 83.9 % and the purity of 1,3-bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane was 99.1 %. It is found that under microwave radiation the reactions are very rapid with good yield, better quality and less time is required for the completion of the reaction.

Synthesis of disiloxanes containing hydroxyalkyl groups

Four 1,3-bis(ω-hydroxyalkyl)tetramethyldisiloxanes 2O (I; n = 3-6) were synthsized by methanolysis of the correspondig trimethylsilylterminated disiloxanes (III).The latter were obtained from 1,1,3,3-tetramethyldisiloxane (II) and the appropriate (ω-alkenyloxy)trimethylsilanes (IV).Under acidic conditions III formed in addition to I, the corresponding (ω-hydroxyalkyl)pentamethyldisiloxanes HO(CH2)nSiMe2OSiMe3 (V; n = 3-6).