31900-57-9

Basic information

• Product Name: Polydimethylsiloxane
• Synonyms: Silanediol,1,1-dimethyl-, homopolymer
• CAS NO: 31900-57-9
• Molecular Formula: C2 H8 O2 Si
• Molecular Weight: 0
• Mol File: 31900-57-9.mol
• Article Data: 15

Chemical Properties

• Appearance: /
• Density: 0.97 g/cm3
• CAS DataBase Reference: Polydimethylsiloxane(CAS DataBase Reference)
• NIST Chemistry Reference: Polydimethylsiloxane(31900-57-9)
• EPA Substance Registry System: Polydimethylsiloxane(31900-57-9)

Safety Data

• Hazardous Substances Data: 31900-57-9(Hazardous Substances Data)

Usage

General Description

Polydimethylsiloxane, also known as PDMS, is a silicone-based organic polymer that is widely used in a variety of industrial and consumer products. It has a unique structure consisting of silicone-oxygen backbones with methyl groups attached to the silicon atoms. PDMS is valued for its flexibility, thermal stability, and low toxicity, making it an ideal material for coatings, lubricants, and sealants. It is also commonly used in skincare products, such as lotions and creams, due to its ability to create a smooth and silky texture. Additionally, PDMS is utilized in medical devices, such as catheters and implants, because of its biocompatibility and resistance to biofouling. Overall, PDMS is a versatile and important chemical in many different industries due to its valuable properties.

Upstream product

• 1112-39-6 dimethyldimethoxysilan 
• 78-62-6 diethoxy dimethylsilane 
• 75-78-5 dimethylsilicon dichloride 
• 1118-15-6 tetramethyl-1,3-disiloxanediol 
• 1066-40-6 Trimethylsilanol 
• 3663-50-1 1,1,3,3,5,5-Hexamethyltrisiloxane-1,5-diol 
• 1009-93-4 2,2,4,4,6,6-hexamethylcyclotrisilazane 
• 65007-35-4 ethoxydimethylsilanol 
• 50870-64-9 dibenzyloxydimethylsilane 

Downstream Products

• 1189-93-1 1,3,3,5,5-hexamethyltrisiloxane 
• 27607-78-9 bis(trifluoromethanesulfonyloxy)dimethylsilane 
• 31709-94-1 1.5-Dichlor-1.5-diphenyltetramethyltrisiloxan 
• 81843-69-8 2,6-Dichloro-4,4,8,8-tetramethyl-2,6-diphenyl-[1,3,5,7,2,4,6,8]tetroxatetrasilocane 
• 56764-52-4 C₁₄H₁₆Cl₄O₂Si₃ 

Relevant articles and documents

METHOD FOR PRODUCING SILANOLS AND NOVEL SILANOLS

PROBLEM TO BE SOLVED: To provide a method for efficiently producing silanols useful as functional chemicals, and to provide novel silanols. SOLUTION: There is provided a method for producing silanols including a reaction step of reacting alkoxysilanes having Si-OR bonds (R represents a hydrocarbon group having 1 to 6 carbon atoms) with water or heavy water in the presence of a catalyst, wherein a method for producing silanols having an Si-OR' bond (R' represents a hydrogen atom or a deuterium atom) is characterized in that the catalyst is an inorganic solid acid catalyst having a regular pore structure. There is also provided novel silanols obtained thereby. SELECTED DRAWING: None COPYRIGHT: (C)2021,JPOandINPIT

Effect of Silyl Ether-functinoalized Dimethoxydimethylsilane on Electrochemical Performance of a Ni-rich NCM Cathode

Dimethoxydimethylsilane (DODSi) is used as an interface stabilizing additive through a selective HF scavenging reaction for layered Ni-rich oxide cathodes. Ex situ NMR analyses demonstrated that DODSi effectively removes HF from the electrolyte based on the matched chemical reactivity of Si with F? and O with H+. The cells employing DODSi exhibit higher specific capacity with retention than those cycled with a DODSi-free electrolyte even under in situ HF generating conditions. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and inductively coupled plasma-mass spectroscopy (ICP-MS) analyses indicate that DODSi effectively protects the Ni-rich oxide cathodes against HF corrosion, resulting in improved surface stability of Ni-rich cathodes.

Formation of silicones mediated by the sponge enzyme silicatein-α

The sponge-restricted enzyme silicatein-α catalyzes in vivo silica formation from monomeric silicon compounds from sea water (i.e. silicic acid) and plays the pivotal role during synthesis of the siliceous sponge spicules. Recombinant silicatein-α, which was cloned from the demosponge Suberites domuncula (phylum Porifera), is shown to catalyze in vitro condensation of alkoxy silanes during a phase transfer reaction at neutral pH and ambient temperature to yield silicones like the straight-chained polydimethylsiloxane (PDMS). The reported condensation reaction is considered to be the first description of an enzymatically enhanced organometallic condensation reaction. The Royal Society of Chemistry.