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2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE

2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE
2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE
CAS No.
2370-88-9
Chemical Name:
2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE
Synonyms
H-4;H4R;HH4R;TMCTS;SP9144;GPRv53;Tetramethylcyclotetrasiloxane;1,3,5,7-Cyclotetra(methylsiloxane);1,3,5,7-TETRAMETHYLCYCLOTETRASILOXANE;2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE
CBNumber:
CB1453337
Molecular Formula:
C4H16O4Si4
Formula Weight:
240.51
MOL File:
2370-88-9.mol

2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE Properties

Melting point:
−69 °C(lit.)
Boiling point:
134 °C(lit.)
Density 
0.986 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.387(lit.)
Flash point:
76 °F
storage temp. 
Flammables area
Water Solubility 
Miscible with most organic solvents. Immiscible with water.
Sensitive 
Moisture Sensitive
BRN 
1787074
InChIKey
BQYPERTZJDZBIR-UHFFFAOYSA-N
CAS DataBase Reference
2370-88-9(CAS DataBase Reference)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi
Risk Statements  10-36
Safety Statements  16-26-36
RIDADR  UN 1993 3/PG 3
WGK Germany  3
10-21
TSCA  Yes
HazardClass  3
PackingGroup  III
HS Code  29319090
Symbol(GHS):
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H226 Flammable liquid and vapour Flammable liquids Category 3 Warning
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P403+P235 Store in a well-ventilated place. Keep cool.
P501 Dispose of contents/container to..…

2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE price More Price(9)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 512990 2,4,6,8-Tetramethylcyclotetrasiloxane ≥98.5%, ≥99.999% trace metals basis 2370-88-9 25ml $184.5 2017-11-08 Buy
Sigma-Aldrich 512990 2,4,6,8-Tetramethylcyclotetrasiloxane ≥98.5%, ≥99.999% trace metals basis 2370-88-9 100ml $476 2017-11-08 Buy
TCI Chemical T2076 2,4,6,8-Tetramethylcyclotetrasiloxane >95.0%(GC) 2370-88-9 5g $29 2017-11-08 Buy
TCI Chemical T2076 2,4,6,8-Tetramethylcyclotetrasiloxane >95.0%(GC) 2370-88-9 25g $102 2017-11-08 Buy
Alfa Aesar L16642 2,4,6,8-Tetramethylcyclotetrasiloxane, 99% 2370-88-9 5g $33.7 2017-11-08 Buy

2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE Chemical Properties,Uses,Production

Description

2, 4, 6, 8-TETRAMETHYLCYCLOTETRASILOXANE can be used as the precursor for the deposition of polysiloxane, cyclic siloxane, silicon dioxide, and gate dielectrics in thin-film transistors (TFT) (for example, for the preparation of ultralow dielectric constant pSiCOH film), and is a component of photochemically formed SiOX monolayers on TiO. It is a good impregnant of photoelectric material. It can be used for the manufacturing of modified siloxane with defined hydrogen content and chain quality.

Chemical Properties

Colorless or yellowish transparent liquid

Uses

2,4,6,8-Tetramethylcyclotetrasiloxane can occur addition reaction with unsaturated alkenes, so it’s utilized widely to synthesize variety functional reactive silicone fluids which is used to form silicone block copolymer, or used as crosslinker of vinyl addition silicone rubber. 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.

References

https://www.alfa.com/zh-cn/catalog/L16642/
http://www.sigmaaldrich.com/catalog/product/aldrich/512990?lang=en&region=US
Grill, A., and V. Patel. "Ultralow dielectric constant pSiCOH films prepared with tetramethylcyclotetrasiloxane as skeleton precursor." Journal of Applied Physics 104.2(2008):107.
Zhang, Jianming, D. S. Wavhal, and E. R. Fisher. "Mechanisms of SiO2 film deposition from tetramethylcyclotetrasiloxane, dimethyldimethoxysilane, and trimethylsilane plasmas." Journal of Vacuum Science & Technology A Vacuum Surfaces & Films 22.1(2004):201-213.
Fujino, Katsuhiro, et al. "Low-Temperature Atmospheric-Pressure Chemical Vapor Deposition, Using 2, 4, 6, 8-Tetramethylcyclotetrasiloxane and Ozone." Japanese Journal of Applied Physics 33. 4A (1994):2019-2024.

2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE Preparation Products And Raw materials

Raw materials

Preparation Products


2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE Suppliers

Global( 94)Suppliers
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Jiangxi New jiayi New Materials Co., Ltd.
15988280056
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Kingfirst Chemical (Nanjing) Co.,Ltd +86-025-84522992 84524602 13805186390
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Alfa Aesar 400-610-6006; 021-67582000
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Chemexcel (Zhangjiakou) Fine Chemicals Co., Ltd 86-10-62944695-809
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TCI (Shanghai) Development Co., Ltd. 800-988-0390
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BeiJing Hwrk Chemicals Limted 4006990298;010-57411839;0757-86311057;021-51691807
010-87653215;0757-86311057;021-55236763 sales@hwrkchemical.com China 15554 55
Energy Chemical 021-58432009 / 400-005-6266
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Secco work (Beijing) chemical technology co., LTD 010-69755668;
010-69755668 1139670422@qq.com China 3549 54

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