Octamethylcyclotetrasiloxane, 98%

Product Code.	Quantity	unitSize
11412288	100 g	100g
11422288	500 g	500g

Product Code. 11412288 Supplier Thermo Scientific Alfa Aesar Supplier No. A15240.22

Description

CAS: 556-67-2 | C8H24O4Si4 | 296.616 g/mol

Octamethylcyclotetrasiloxane is used to prepare silicone oil, silicone rubber and silicone resin having different degrees of polymerization through ring opening and polymerizing. It is also widely used in various fields viz. construction, electronics, textile, automobile, personal care, food, and machining. It is an organometallic reagent utilized for the preparation of siloxane polymers having high surface-hydrophobicity restoration.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Octamethylcyclotetrasiloxane is used to prepare silicone oil, silicone rubber and silicone resin having different degrees of polymerization through ring opening and polymerizing. It is also widely used in various fields viz. construction, electronics, textile, automobile, personal care, food, and machining. It is an organometallic reagent utilized for the preparation of siloxane polymers having high surface-hydrophobicity restoration.

Solubility
Immiscible with water.

Notes
Incompatible with strong oxidizing agents, acids and bases.

Specifications

Chemical Identifiers

• CAS: 556-67-2
• Molecular Formula: C8H24O4Si4
• Molecular Weight (g/mol): 296.616
• MDL Number: MFCD00003269
• InChI Key: HMMGMWAXVFQUOA-UHFFFAOYSA-N
• Synonym: octamethylcyclotetrasiloxane, cyclotetrasiloxane, octamethyl, oktamethylcyklotetrasiloxan, cyclic dimethylsiloxane tetramer, omcts, nuc silicone vs 7207, union carbide 7207, silicone sf 1173, oktamethylzyklotetrasiloxan, unii-cz227117je
• PubChem CID: 11169
• ChEBI: CHEBI:25640
• IUPAC Name: 2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
• SMILES: C[Si]1(O[Si](O[Si](O[Si](O1)(C)C)(C)C)(C)C)C

• Boiling Point: 175°C to 176°C
• Melting Point: 17°C to 18°C
• Quantity: 100 g
• UN Number: UN1993
• Beilstein: 1787074
• Flash Point: 56°C (132°F)
• Merck Index: 14,6747
• Solubility Information: Immiscible with water.
• Formula Weight: 296.62
• Percent Purity: 98%
• Refractive Index: 1.396
• Sensitivity: Moisture sensitive
• Density: 0.956
• Chemical Name or Material: Octamethylcyclotetrasiloxane

Sécurité et traitement

FDS

RUO – Research Use Only