4938-87-8

Basic information

• Product Name: 1,15-Dihydroxy hexadecamethyl octasiloxane
• Synonyms: 1,15-Dihydroxy hexadecamethyl octasiloxane
• CAS NO: 4938-87-8
• Molecular Formula: C₁₆H₅₀O₉Si₈
• Molecular Weight: 0
• Mol File: 4938-87-8.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1,15-Dihydroxy hexadecamethyl octasiloxane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,15-Dihydroxy hexadecamethyl octasiloxane(4938-87-8)
• EPA Substance Registry System: 1,15-Dihydroxy hexadecamethyl octasiloxane(4938-87-8)

Safety Data

• Hazardous Substances Data: 4938-87-8(Hazardous Substances Data)

Usage

Description

1,15-Dihydroxy hexadecamethyl octasiloxane is a chemical compound belonging to the class of siloxanes. It is characterized by its unique structure, which consists of a chain of alternating silicon and oxygen atoms with methyl groups attached to the silicon atoms. 1,15-Dihydroxy hexadecamethyl octasiloxane is known for its versatile properties, making it suitable for a range of applications across different industries.

Uses

Used in the Chemical Industry:
1,15-Dihydroxy hexadecamethyl octasiloxane is used as a precursor for the preparation of discrete dimethylsiloxane oligomers. These oligomers are essential components in the synthesis of various silicone-based products, such as polymers, resins, and fluids, which find applications in a wide range of industries, including automotive, construction, electronics, and personal care.
1,15-Dihydroxy hexadecamethyl octasiloxane's ability to form stable and well-defined oligomers makes it a valuable asset in the chemical industry, as it allows for the creation of materials with specific properties tailored to meet the demands of various applications. Additionally, its compatibility with other chemical groups and its ability to form stable bonds contribute to its widespread use in the synthesis of complex molecules and materials.

Upstream product

• 19095-24-0 octasiloxane, 1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15-hexadecamethyl 
• 4098-30-0 dodecamethylcyclohexasilane 

Downstream Products

• 72325-67-8 C₄₀H₉₄O₁₇Si₁₆ 

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.

End groups of functionalized siloxane oligomers direct block-copolymeric or liquid-crystalline self-assembly behavior

Monodisperse oligodimethylsiloxanes end-functionalized with the hydrogen-bonding ureidopyrimidinone (UPy) motif undergo phase separation between their aromatic end groups and dimethylsiloxane midblocks to form ordered nanostructures with domain spacings of 1.13 results in disorder, showing importance of molecular monodispersity for ultrasmall ordered phase separation. In contrast, oligodimethylsiloxanes end-functionalized with an O-benzylated UPy derivative self-assemble into lamellar nanostructures regardless of volume fraction because of the strong preference of the end groups to aggregate in a planar geometry. Thus, these molecules display more classically liquid-crystalline self-assembly behavior where the lamellar bilayer thickness is determined by the siloxane midblock. Here the lamellar nanostructure is tolerant to molecular polydispersity. We show the importance of end groups in high χ-low N block molecules, where block-copolymer-like self-assembly in our UPy-functionalized oligodimethylsiloxanes relies upon the dominance of phase separation effects over directional end group aggregation.