Hexadecamethylcyclooctasiloxane structure

Hexadecamethylcyclooctasiloxane

TL;DR: Hexadecamethylcyclooctasiloxane (CAS 556-68-3) is a chemical compound with molecular formula C16H48O8Si8 and molecular weight 592.15 g/mol, supplied by Kehong Biological (Henan Kehong Biological Technology Co., Ltd.) with CRO/CDMO custom synthesis services.

2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane

Also Known As: HEXADECAMETHYLCYCLOOCTASILOXANE, Cyclooctasiloxane, hexadecamethyl-, CYCLOMETHICONE 8, Hexadecamethyl-cyclooctasioxane, hexadecamethyl-cyclooctasiloxane

CAS: 556-68-3
Molecular Formula C16H48O8Si8
Molecular Weight 592.15 g/mol
LogP 5.75
Topological Polar Surface Area 73.8 Ų
Hydrogen Bond Donors 0
Hydrogen Bond Acceptors 8
Rotatable Bonds 0
Exact Mass 592.1503
Heavy Atoms 32
Complexity 450.0

Chemical Identifiers

CAS Number 556-68-3
SMILES C[Si]1(O[Si](O[Si](O[Si](O[Si](O[Si](O[Si](O[Si](O1)(C)C)(C)C)(C)C)(C)C)(C)C)(C)C)(C)C)C
InChIKey XKJMJYZFAWYREL-UHFFFAOYSA-N

Patent-Derived Application Labels

Derived from 9 IPC patent classification(s) across the SureChEMBL global patent database.

Coatings & Adhesives (12 patents) Electronic Chemicals (5 patents) Lubricants & Additives (30 patents) Organic Building Blocks (5 patents) Organometallic Reagents (6 patents) +4 more

Product Overview

Hexadecamethylcyclooctasiloxane (CAS 556-68-3), with molecular formula C16H48O8Si8 and molecular weight 592.15 g/mol. IUPAC: 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane.

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Safety Data Sheet (MSDS / SDS) View the Laboratory Chemical Safety Summary (LCSS) on PubChem — includes GHS classifications, hazard statements, first aid measures, and handling precautions.
View MSDS →

Chemical Property Profile of Hexadecamethylcyclooctasiloxane

XLogP
5.75
TPSA (Topological Polar Surface Area)
73.8
Hydrogen Bond Donors
0
Hydrogen Bond Acceptors
8
Rotatable Bonds
0
Heavy Atoms
32
Complexity
450.0
Exact Mass
592.1503
Monoisotopic Mass
592.1503
Data Source: Chemical property values are referenced from PubChem, the world's largest open chemistry database maintained by the National Center for Biotechnology Information (NCBI), U.S. National Library of Medicine.

Property Insights of Hexadecamethylcyclooctasiloxane

The XLogP value of 5.75 indicates that Hexadecamethylcyclooctasiloxane is lipophilic (fat-soluble), which may influence its absorption, distribution, and formulation strategy. The TPSA of 73.8 Ų falls within the moderate polarity range, balancing permeability and solubility for Hexadecamethylcyclooctasiloxane. Following Lipinski's Rule of Five, Hexadecamethylcyclooctasiloxane has 0 hydrogen bond donor(s) and 8 hydrogen bond acceptor(s), which may warrant consideration for formulation optimization.

Frequently Asked Questions

What is the typical lead time for this product?
Lead time typically ranges from 3-7 business days for in-stock items. For larger quantities or custom orders, please contact us for specific lead times.
Can you provide samples for testing?
Yes, we offer sample quantities for quality testing. Please submit an inquiry with your requirements and we will arrange samples accordingly.
What documentation do you provide with the product?
We provide COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), and technical data sheets with each shipment.
Do you ship internationally?
Yes, we ship to most countries worldwide. Shipping costs and delivery times vary by location. Please contact us for specific shipping information.

Frequently Asked Questions

What is the CAS number of Hexadecamethylcyclooctasiloxane?

The CAS number of Hexadecamethylcyclooctasiloxane is 556-68-3.

What is the molecular formula of Hexadecamethylcyclooctasiloxane?

The molecular formula of Hexadecamethylcyclooctasiloxane is C16H48O8Si8.

What is the molecular weight of Hexadecamethylcyclooctasiloxane?

The molecular weight of Hexadecamethylcyclooctasiloxane is 592.15 g/mol.

Where can I buy Hexadecamethylcyclooctasiloxane?

You can request a quote for Hexadecamethylcyclooctasiloxane directly from KEHONG BIO. Contact us or email info@kehongbio.com for pricing and availability.

Does KEHONG BIO offer custom synthesis for Hexadecamethylcyclooctasiloxane?

Yes, KEHONG BIO provides custom synthesis services for Hexadecamethylcyclooctasiloxane and related compounds. Contact us with your specific requirements including quantity, purity, and timeline.

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