19095-23-9

Basic information

• Product Name: 1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane
• Synonyms: 1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane;Heptasiloxane, 1,1,3,3,5,5,7,7,9,9,11,11,13,13-tetradecamethyl-
• CAS NO: 19095-23-9
• Molecular Formula: C₁₄H₄₄O₆Si₇
• Molecular Weight: 505.09406
• EINECS: -0
• Mol File: 19095-23-9.mol

Chemical Properties

• Boiling Point: 128°C/2mmHg(lit.)
• Appearance: /
• Refractive Index: 1.3930 to 1.3970
• CAS DataBase Reference: 1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane(19095-23-9)
• EPA Substance Registry System: 1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane(19095-23-9)

Safety Data

• Hazardous Substances Data: 19095-23-9(Hazardous Substances Data)

Usage

Uses

Used in the Pharmaceutical Industry:
1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane is used as an excipient for enhancing the stability and bioavailability of active pharmaceutical ingredients. Its non-toxic nature and compatibility with a wide range of substances make it an ideal candidate for use in the formulation of various drug delivery systems.
Used in the Cosmetics Industry:
In the cosmetics industry, 1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane is used as a conditioning agent and skin protectant. Its ability to form a protective film on the skin surface helps to retain moisture and provide a smooth, silky feel to the skin, making it a valuable ingredient in various cosmetic products such as lotions, creams, and hair conditioners.
Used in the Acorus Calamus Plant Industry:
1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane is used as a method for improving the biosynthesis of phytochemicals and antioxidant potential of Acorus calamus plant. By incorporating this compound into the cultivation process, it can enhance the plant's natural defense mechanisms and increase its overall antioxidant capacity, leading to improved quality and efficacy of the final product.

Upstream product

• 3277-26-7 1,1,3,3-Tetramethyldisiloxane 
• 541-02-6 decamethylcyclopentasiloxane 
• 98-83-9 isopropenylbenzene 
• 541-05-9 Hexamethylcyclotrisiloxane 
• 1066-35-9 dimethylmonochlorosilane 
• 556-67-2 octamethylcyclotetrasiloxane 

Relevant articles and documents

METHOF FOR PRODUCING HYDRIDOSILANES

The invention relates to a method for producing hydridosilanes, in which siloxanes containing Si—H groups are reacted in the presence of a cationic Si(II) compound as a catalyst.

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.

Effect of catalyst structure on the reaction of α-methylstyrene with 1,1,3,3-tetramethyldisiloxane

Reaction of α-methylstyrene with 1,1,3,3-tetramethyldisiloxane in the presence of the complexes of platinum(II), palladium(II) and rhodium(I) is explored. It is established that in the presence of platinum catalyst predominantly occurs hydrosilylation of α-methylstyrene leading to formation of β-adduct, on palladium catalysts proceeds reduction of α-methylstyrene, on rhodium catalysts both the processes take place. In the reaction mixture proceeds disproportion and dehydrocondensation of 1,1,3,3-tetramethyldisiloxane that leads to formation of long chain linear and cyclic siloxanes of general formula HMe2Si(OSiMe2) n H and (-OSiMe2-)m (n = 2-6, m = 3-7), respectively. Platinum catalysts promotes formation of linear siloxanes, while both rhodium and palladium catalysts afford linear and cyclic siloxanes as well. Structure of intermediate metallocomplexes is studied.

PROCESS FOR MAKING SI-H FUNCTIONAL SILOXANE OLIGOMER

The present invention relates to a method of making a Si-H functional siloxane oligomer from the reaction between silicon hydride compounds and cyclic siloxane oligomer in the presence of a Lewis acid that is capable of interacting with the hydrogen of th

A Convenient Synthesis of α,ω-Difunctionalized Linear Dimethylsiloxanes with Definite Chain Lengths

α,ω-Difunctionalized linear dimethylsiloxanes with definite chain lengths are conveniently prepared by the inorganic-solid-catalyzed ring cleavage of cyclodimethylsiloxanes with dimethylchlorosilane and water under very mild conditions.