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Alfa Aesar™ 2,4,6,8-Tetramethylcyclotetrasiloxane, 99%

Chemical Identifiers

Chemical Name or Material 2,4,6,8-Tetramethylcyclotetrasiloxane
CAS 2370-88-9
Molecular Formula C4H16O4Si4
Formula Weight 240.51g/mol
MDL Number MFCD00039567
UN Number UN1993
Beilstein 1787074
Synonym 1,3,5,7-Tetramethylcyclotetrasiloxane; TMCTS
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Products
Catalog Number Mfr. No. Quantity Price Quantity    

AAL1664206

 
alfa aesar™
L16642-06
5g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.

AAL1664214

 
alfa aesar™
L16642-14
25g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.

AAL1664222

 
alfa aesar™
L16642-22
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.
Description & Specifications

Specifications

Boiling Point 134° to 135°C
Melting Point −69°C
Quantity 5g
Flash Point 25°C (77°F)
Chemical Name or Material 2,4,6,8-Tetramethylcyclotetrasiloxane
CAS 2370-88-9
Assay 99%
Molecular Formula C4H16O4Si4
Formula Weight 240.51g/mol
MDL Number MFCD00039567
UN Number UN1993
Beilstein 1787074
Synonym 1,3,5,7-Tetramethylcyclotetrasiloxane; TMCTS
Health Hazard 1 Warning
Health Hazard 2 GHS H Statement
H226-H319
Flammable liquid and vapor.
Causes serious eye irritation.
Health Hazard 3 GHS P Statement
P210-P280-P303+P361+P353-P305+P351+P338-P403+P235-P501a
Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
Wear protective gloves/protective clothing/eye protection/face protection.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Store in a well-ventilated place. Keep cool.
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.
TSCA TSCA

Applications
Tetramethyl-cyclotetrasiloxane is a good impregnant of photoelectric material. It is used to manufacture of modified siloxane with defined hydrogen content and chain quantity. It is also used in production of silicone polymers and acts as a precursor for the deposition of polysiloxane, cyclic siloxane, silicon dioxide, oxycarbide thin films with low dielectric constant for microelectronics and semiconductors.

Solubility
Miscible with most organic solvents. Immiscible with water.

Notes
Incompatible with oxidizing agents, bases and acids. Store in a cool place.

Safety and Handling

Warning

GHS P Statement
P210-P280-P303+P361+P353-P305+P351+P338-P403+P235-P501a
Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
Wear protective gloves/protective clothing/eye protection/face protection.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Store in a well-ventilated place. Keep cool.
Dispose of contents/container in accordance with local/regional/national/international regulations.

GHS H Statement
H226-H319
Flammable liquid and vapor.
Causes serious eye irritation.