107-50-6

Basic information

• Product Name: tetradecamethylcycloheptasiloxane
• Synonyms: tetradecamethylcycloheptasiloxane;Cycloheptasiloxane, tetradecamethyl-;2,2,4,4,6,6,8,8,10,10,12,12,14,14-Tetradecamethylcyclotetradecaneheptasiloxane;Tetradecamethylcyclotetradecaneheptasiloxane
• CAS NO: 107-50-6
• Molecular Formula: C₁₄H₄₂O₇Si₇
• Molecular Weight: 519.07758
• EINECS: 203-496-9
• Mol File: 107-50-6.mol
• Article Data: 11

Chemical Properties

• Melting Point: -32°C(lit.)
• Boiling Point: 151°C/20mmHg(lit.)
• Flash Point: 150.7°C
• Appearance: /liquid
• Density: 0.9703
• Vapor Pressure: 0.000217mmHg at 25°C
• Refractive Index: 1.4020 to 1.4060
• Storage Temp.: Refrigerator
• Solubility: Benzene (Slightly), Chloroform
• CAS DataBase Reference: tetradecamethylcycloheptasiloxane(CAS DataBase Reference)
• NIST Chemistry Reference: tetradecamethylcycloheptasiloxane(107-50-6)
• EPA Substance Registry System: tetradecamethylcycloheptasiloxane(107-50-6)

Safety Data

• Hazardous Substances Data: 107-50-6(Hazardous Substances Data)

Usage

Uses

Tetradecamethylcycloheptasiloxane is used in cosmetic and personal care products.

Definition

ChEBI: Tetradecamethylcycloheptasiloxane is a macrocyclic organosiloxane composed from seven units of dimethylsiloxane. It has a role as a marine xenobiotic metabolite. It is an organosiloxane and a macrocycle.

InChI:InChI=1/C14H42O7Si7/c1-22(2)15-23(3,4)17-25(7,8)19-27(11,12)21-28(13,14)20-26(9,10)18-24(5,6)16-22/h1-14H3

Upstream product

• 78-62-6 diethoxy dimethylsilane 
• 541-05-9 Hexamethylcyclotrisiloxane 
• 109-72-8 n-butyllithium 
• 75-78-5 dimethylsilicon dichloride 
• 4098-30-0 dodecamethylcyclohexasilane 
• 3277-26-7 1,1,3,3-Tetramethyldisiloxane 
• 3004-00-0 α,ω-Dichlor-tetradecamethyl-heptasiloxan 
• 4342-61-4 1,2-dichlorotetramethylsilane 
• 98-83-9 isopropenylbenzene 
• 18642-94-9 1,1,2,2-tetramethyl-1,2-di-n-octyldisiloxane 
• 74-83-9 methyl bromide 
• 115-10-6 Dimethyl ether 
• 7440-21-3 silicon 
• 540-97-6 dodecamethyl-cyclohexasiloxane 

Relevant articles and documents

Hydrogenolysis of Polysilanes Catalyzed by Low-Valent Nickel Complexes

The dehydrogenation of organosilanes (RxSiH4?x) under the formation of Si?Si bonds is an intensively investigated process leading to oligo- or polysilanes. The reverse reaction is little studied. To date, the hydrogenolysis of Si?Si bonds requires very harsh conditions and is very unselective, leading to multiple side products. Herein, we describe a new catalytic hydrogenation of oligo- and polysilanes that is highly selective and proceeds under mild conditions. New low-valent nickel hydride complexes are used as catalysts and secondary silanes, RR′SiH2, are obtained as products in high purity.

High-efficiency macrocyclic dimethyl siloxane compound preparation method

The invention discloses a high-efficiency macrocyclic dimethyl siloxane compound preparation method which comprises the following steps: (1) utilizing tetramethyl disiloxane and octamethyl cyclotetrasiloxane as raw materials, performing ring-openingopen cycle in a sodium hydroxide or potassium hydroxide water solution and then inserting again to obtain dimethyl hydrogen silicone end capped direct-linked siloxane; (2) chlorinating the dimethyl hydrogen silicone end capped direct-linked siloxane with acetyl chloride under a catalytic effect of aluminum trichloride to obtain dimethyl chlorosilane end capped direct-linked siloxane; (3) hydrolyzing the direct-linked siloxane under the alkali condition to obtain varieties of macrocyclic diemthyl silicon ring bodies. The preparation method has simple steps and economical and safe technology and can be used for obtaining varieties of high-purity macrocyclic diemthyl silicon ring body products from simple raw materials; thus, high-difficulty distillation is avoided, and the preparation method is very suitable for industrial production.