2,4,6,8-Tetramethylcyclotetrasiloxane

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.)
vapor pressure	0.05-479Pa at 20℃
refractive index	n20/D 1.387(lit.)
Flash point	76 °F
storage temp.	2-8°C
form	liquid
Specific Gravity	0.991
color	Colorless to Almost colorless
Viscosity	6.9mm2/s
Water Solubility	Miscible with most organic solvents. Immiscible with water.
Sensitive	Moisture Sensitive
Hydrolytic Sensitivity	3: reacts with aqueous base
BRN	1787074
InChIKey	BQYPERTZJDZBIR-UHFFFAOYSA-N
LogP	-2.4-5.54 at 25℃
CAS DataBase Reference	2370-88-9(CAS DataBase Reference)
EPA Substance Registry System	Cyclotetrasiloxane, 2,4,6,8-tetramethyl- (2370-88-9)

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS02,GHS07

Signal word

Warning

Hazard statements

H319-H226

Precautionary statements

P280a-P305+P351+P338-P501a-P210-P233-P240-P241+P242+P243-P264-P280-P303+P361+P353-P305+P351+P338+P337+P313-P370+P378-P403+P235-P501

Hazard Codes

Xi

Risk Statements

10-36

Safety Statements

16-26-36

RIDADR

UN 1993 3/PG 3

WGK Germany

3

F

10-21

TSCA

Yes

HazardClass

3

PackingGroup

III

HS Code

29319090

NFPA 704

	2
2		0

2,4,6,8-Tetramethylcyclotetrasiloxane price More Price(21)

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	$379	2024-03-01	Buy
Sigma-Aldrich	512990	2,4,6,8-Tetramethylcyclotetrasiloxane ≥98.5%, ≥99.999% trace metals basis	2370-88-9	100ml	$630	2024-03-01	Buy
TCI Chemical	T2076	2,4,6,8-Tetramethylcyclotetrasiloxane >95.0%(GC)	2370-88-9	5g	$31	2024-03-01	Buy
TCI Chemical	T2076	2,4,6,8-Tetramethylcyclotetrasiloxane >95.0%(GC)	2370-88-9	25g	$101	2024-03-01	Buy
Alfa Aesar	L16642	2,4,6,8-Tetramethylcyclotetrasiloxane, 99%	2370-88-9	25g	$160	2024-03-01	Buy

Product number	Packaging	Price	Buy
512990	25ml	$379	Buy
512990	100ml	$630	Buy
T2076	5g	$31	Buy
T2076	25g	$101	Buy
L16642	25g	$160	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.

Uses

2, 4, 6, 8-Tetramethylcyclotetrasiloxane (TMCTS) is an important precursor for the deposition of polysiloxane, cyclic siloxane, silicon dioxide, oxycarbide thin films with low dielectric constant for microelectronics, semiconductors and other applications

General Description

Atomic number of base material: 14 Silicon

Flammability and Explosibility

Flammable

Synthesis

The synthesis process of 2,4,6,8-Tetramethylcyclotetrasiloxane is as follows. A 1-L four-necked flask equipped with a thermometer, stirrer, column packed with cylindrical glass of about 1x1 mm to a height of 500 mm, water-cooled condenser, outlet tube, and distillate receiver was connected to a vacuum pump. To the flask were fed 100 g of trimethylsiloxy end-capped dimethylpolysiloxane having a viscosity of 10,000 centistokes at 25°C and 1.0 g of the catalyst (i) synthesized above, after which agitation was commenced. While the flask interior was kept under a reduced pressure of 50 mmHg, the flask was heated at 250-260°C using a mantle heater. A fraction distilled out for 14 hours was collected (45 g). The residue (31 g) was a clear liquid. yeild= 52%

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 synthesis

Synthesis of 2,4,6,8-Tetramethylcyclotetrasiloxane from Dichloromethylsilane and Water

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

Raw materials

2,4,6,8,10,12-HEXAMETHYLCYCLOHEXASILOXANE, 96 PENTAMETHYLCYCLOPENTASILOXANE Diethyl ether Water

Preparation Products

2 4 6-TRIMETHYLCYCLOTRISILOXANE 99 1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE 1,1,1,3,5,5,5-Heptamethyltrisiloxane

2,4,6,8-Tetramethylcyclotetrasiloxane Suppliers

Global( 271)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Sirichem (Zhangjiakou) Sci-Tech.Co.,Ltd.	+8615831567206		China	58	58
Hubei Changfu Chemical Co., Ltd.	+86-027-84396550 +8617721064038	sales@cfsilanes.com	China	401	58
Dongguan City Betterly New Materials co.,Ltd	+86-13713468294 +86-13535083564	waimaobu@betely.com	China	37	58
Capot Chemical Co.,Ltd.	571-85586718 +8613336195806	sales@capotchem.com	China	29797	60
Jiangxi New jiayi New Materials Co., Ltd.	15988280056	mina@xjysi.com	CHINA	27	55
Shanghai Daken Advanced Materials Co.,Ltd	+86-371-66670886	info@dakenam.com	China	15371	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21695	55
Hangzhou FandaChem Co.,Ltd.	008657128800458; +8615858145714	fandachem@gmail.com	China	9352	55
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	32480	60
Shanxi Naipu Import and Export Co.,Ltd	+86-13734021967 +8613734021967	kaia@neputrading.com	China	1011	58

Supplier	Advantage
Sirichem (Zhangjiakou) Sci-Tech.Co.,Ltd.	58
Hubei Changfu Chemical Co., Ltd.	58
Dongguan City Betterly New Materials co.,Ltd	58
Capot Chemical Co.,Ltd.	60
Jiangxi New jiayi New Materials Co., Ltd.	55
Shanghai Daken Advanced Materials Co.,Ltd	58
Henan Tianfu Chemical Co.,Ltd.	55
Hangzhou FandaChem Co.,Ltd.	55
ATK CHEMICAL COMPANY LIMITED	60
Shanxi Naipu Import and Export Co.,Ltd	58

View Lastest Price from 2,4,6,8-Tetramethylcyclotetrasiloxane manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2024-03-13	2,4,6,8-Tetramethylcyclotetrasiloxane 2370-88-9	US $0.00-0.00 / kg	0.10000000149011612kg	97%	200tons	Hubei Changfu Chemical Co., Ltd.
2023-03-21	2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE 2370-88-9	US $0.00-0.00 / kg	1kg	98%	1000kg	LY Global chemicals co.,ltd .
2023-03-06	2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE 2370-88-9	US $1.00 / Kg/Drum	1KG	98%min	10mt per month	Wuhan KEMI-WORKS Chemical Co., Ltd.

2,4,6,8-Tetramethylcyclotetrasiloxane
2370-88-9
US $0.00-0.00 / kg
97%
Hubei Changfu Chemical Co., Ltd.

2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE
2370-88-9
US $0.00-0.00 / kg
98%
LY Global chemicals co.,ltd .

2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE
2370-88-9
US $1.00 / Kg/Drum
98%min
Wuhan KEMI-WORKS Chemical Co., Ltd.

2,4,6,8-Tetramethylcyclotetrasiloxane Spectrum

2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE(2370-88-9)FT-IR

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2,4,6,8-tetramethylcyclotetrasiloxane,mixtureofisomers Cyclotetrasiloxane, 2,4,6,8-tetramethyl- Tetramethylcyclotetrasiloxane 2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE, 9 9.5+% 1,3,5,7-TETRAMETHYLCYCLOTETRASILOXANE (2% CHLOROSILANE STABILIZED) 1,3,5,7-TETRAMETHYLCYCLOTETRASILOXANE 95+% 2,4,6,8-Tetramethylcyclotetrasiloxane, 95%, mixture of isomers 1,3,5,7-Tetramethyl-2,4,6,8-tetraoxa-1,3,5,7-tetrasilacyclooctane 2,4,6,8-Tetramethylcyclooctanetetrasiloxane 2,4,6,8-Tetramethylcyclooctatetrasiloxane H-4 2,4,6,8-Tetramethylcyclotetrasiloxane,95% 1,3,5,7-Cyclotetra(methylsiloxane) SP9144 Anti-HRH4 (N-terminal) antibody produced in rabbit GPRv53 H4R HH4R 1,3,5,7-TETRAMETHYLCYCLOTETRASILOXANE 99+% (D4H) 1,3,5,7-tetraMethylcyclotetrasiloxane 2,4,6,8-TetraMethylcyclotetrasiloxane 1,3,5,7-TETRAMETHYLCYCLOTETRASILOXANE 2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE TMCTS 1,2,5,7-Tetramethylcyclotetrasiloxane 2,4,6,8-Tetramethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane 2,4,6,8-tetramethyl-cyclotetrasiloxan D4H 2,4,6,8-tetramethyl-1,3,5,7,2λ³,4λ³,6λ³,8λ³-tetraoxatetrasilocane 2,4,6,8-Tetramethylcyclotetrasiloxane(HD4) cyclic tetramethyltetrasiloxane 2,4,6,8-Tetramethylcyclotetrasiloxane Liquid 1,3,5,7-TETRAMETHYLCYCLOTETRASILOXANE, 99.0% 1,3,5,7-Tetramethyl-cyclotetrasiloxane (DH4) DK690 2370-88-9 C4H16O4Si4 C4H18O4Si4 HSiCH3O4 Organosilicon Organometallic Reagents Siloxanes Siloxanes