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Alfa Aesar™ Octamethylcyclotetrasiloxane, 98%

Chemical Identifiers

Chemical Name or Material Octamethylcyclotetrasiloxane
CAS 556-67-2
Molecular Formula C8H24O4Si4
Formula Weight 296.62g/mol
MDL Number MFCD00003269
UN Number UN1993
Beilstein 1787074
Merck Index 14,6747
View More Specs
Products
Catalog Number Mfr. No. Quantity Price Quantity    

AAA1524022

 
alfa aesar™
A15240-22
100g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.

AAA1524036

 
alfa aesar™
A15240-36
500g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.
Description & Specifications

Specifications

Boiling Point 175° to 176°C
Melting Point 17° to 18°C
Quantity 100g
Flash Point 56°C (132°F)
Chemical Name or Material Octamethylcyclotetrasiloxane
CAS 556-67-2
Assay 98%
Molecular Formula C8H24O4Si4
Formula Weight 296.62g/mol
MDL Number MFCD00003269
UN Number UN1993
Beilstein 1787074
Merck Index 14,6747
Health Hazard 1 Warning
Health Hazard 2 GHS H Statement
H226-H361
Flammable liquid and vapour.
Suspected of damaging fertility or the unborn child.
Health Hazard 3 GHS P Statement
P210-P280-P281-P303+P361+P353-P405-P501a
Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
Wear protective gloves/protective clothing/eye protection/face protection.
Use personal protective equipment as required.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
DOT Information Transport Hazard Class: 3; Packing Group: III; Proper Shipping Name: FLAMMABLE LIQUIDS, N.O.S.
RTECS Number GZ4397000
TSCA TSCA

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.

Safety and Handling

Warning

GHS P Statement
P210-P280-P281-P303+P361+P353-P405-P501a
Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
Wear protective gloves/protective clothing/eye protection/face protection.
Use personal protective equipment as required.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.

GHS H Statement
H226-H361
Flammable liquid and vapour.
Suspected of damaging fertility or the unborn child.