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ChemicalBook >> CAS DataBase List >>1,1,3,3-Tetramethyldisiloxane

1,1,3,3-Tetramethyldisiloxane

CAS No.
3277-26-7
Chemical Name:
1,1,3,3-Tetramethyldisiloxane
Synonyms
TMDSO;TETRAMETHYLDISILOXANE;TMDO;(Me2HSi)2O;Dimethylsilyl ether;Disiloxane, 1,1,3,3-tetramethyl-;5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine;DK740;DK741;DK265
CBNumber:
CB5355451
Molecular Formula:
C4H14OSi2
Molecular Weight:
134.32
MDL Number:
MFCD00008256
MOL File:
3277-26-7.mol
MSDS File:
SDS
Last updated:2024-12-18 14:08:57

1,1,3,3-Tetramethyldisiloxane Properties

Melting point <-78°C
Boiling point 70-71 °C (lit.)
Density 0.76 g/mL at 25 °C (lit.)
vapor pressure 250 hPa (20 °C)
refractive index n20/D 1.370(lit.)
Flash point 14 °F
storage temp. Store at <= 20°C.
solubility soluble in Chloroform
pka 11.9[at 20 ℃]
form liquid
color colorless
Specific Gravity 0.757
explosive limit 0.8-62.9%(V)
Viscosity 0.7mm2/s
Water Solubility DECOMPOSES
Sensitive Moisture Sensitive
Hydrolytic Sensitivity 3: reacts with aqueous base
BRN 1733364
InChIKey NVYQDQZEMGUESH-UHFFFAOYSA-N
LogP -0.38-4.5 at 20-25℃
CAS DataBase Reference 3277-26-7(CAS DataBase Reference)
EWG's Food Scores 1
NIST Chemistry Reference ((CH3)2SiH)2O(3277-26-7)
EPA Substance Registry System Disiloxane, 1,1,3,3-tetramethyl- (3277-26-7)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS02
Signal word  Danger
Hazard statements  H225
Precautionary statements  P210-P233-P240-P241-P242-P243
Hazard Codes  F
Risk Statements  11-36/37/38-16
Safety Statements  16-26-36-9-33-29
RIDADR  UN 2924 3/PG 2
WGK Germany  3
RTECS  JN1000000
F  10-21
Autoignition Temperature 240 °C
TSCA  Yes
HazardClass  3
PackingGroup  II
HS Code  29310095
NFPA 704
3
0 1

1,1,3,3-Tetramethyldisiloxane price More Price(30)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 235733 1,1,3,3-Tetramethyldisiloxane 97% 3277-26-7 25g $36.5 2024-03-01 Buy
Sigma-Aldrich 235733 1,1,3,3-Tetramethyldisiloxane 97% 3277-26-7 100g $121 2024-03-01 Buy
TCI Chemical T1437 1,1,3,3-Tetramethyldisiloxane >97.0%(GC) 3277-26-7 25mL $26 2024-03-01 Buy
TCI Chemical T1437 1,1,3,3-Tetramethyldisiloxane >97.0%(GC) 3277-26-7 250mL $142 2024-03-01 Buy
Alfa Aesar B23697 1,1,3,3-Tetramethyldisiloxane, 97% 3277-26-7 25g $38.65 2024-03-01 Buy
Product number Packaging Price Buy
235733 25g $36.5 Buy
235733 100g $121 Buy
T1437 25mL $26 Buy
T1437 250mL $142 Buy
B23697 25g $38.65 Buy

1,1,3,3-Tetramethyldisiloxane Chemical Properties,Uses,Production

Description

1,1,3,3-Tetramethyldisiloxane is soluble in many organic solvents, such as aromatic hydrocarbon and petroleum hydrocarbons, and so on. This product is a kind of widely used organic silicon intermediates, and usually be used as organic silicon blocking agent. Due to containing reactive Si-H groups in the molecular structure, it can be used in the synthesis of copolymer macromolecule by hydrosilylation. The synthesis of copolymer macromolecule can be made into a series of reactive silicone oil.

Chemical Properties

Colorless or yellowish transparent liquid

Uses

1, 1, 3, 3-Tetramethyldisiloxane is a kind of siloxane derivative, and can be used as a monomer for the preparation of silicone polymers or silicone resins. It is used as an intermediate for preparing other organosilicon compounds. It is also used in non-aqueous polymer preparation as well as a laboratory reagent. In organic synthesis, it finds an application as an effective reducing agent in platinum-catalyzed reduction of carboxamides to amines as well as in the Au/TiO2-catalyzed hydrosilylation of carbonyl compounds (e.g., reduction of aldehydes or ketones) relative to monohydrosilanes. It can also enable a direct bromination of carboxylic acids in the presence of indium bromide (InBr3) as catalyst.

Uses

1. Synthesis of polysiloxane containing faculties end groups.
2. Can be used for the preparation of high performance organic silicone surfactants.
3. Applicable to the production of many products, such as addition silicon rubber, silica gel, Hydrogenpolysiloxane and plastic, resin modifier, dendrite polymer special additives, etc.

Uses

1,1,3,3-Tetramethyldisiloxane is used as a monomer in the production of silicone polymers or silicone resins. It is used as a precursor to prepare other organosilicon compounds. It is also utilized in non-aqueous polymer preparation as well as a laboratory reagent.

Flammability and Explosibility

Highly flammable

Purification Methods

1,Possible impurity is 1,1,5,5-tetramethyl-3-trimethylsiloxytrisiloxane b 154-155o/733mm. Fractionate it, collect fractions boiling below 80o and re-fractionate it. Its purity can be analysed by alkaline hydrolysis and measuring the volume of H2 liberated followed by gravimetric estimation of silica in the hydrolysate. It is unchanged when stored in glass containers in the absence of moisture for 2-3 weeks. Small amounts of H2 are liberated on long storage. Care should be taken when opening a container due to pressure developed. [Speier et al. J Am Chem Soc 79 974 1958, Emeléus & Smythe J Chem Soc 609 1958, IR: Kriegsmann Z Anorg Chem 299 78 1959, Beilstein 4 IV 3991.]

References

https://www.alfa.com/en/catalog/B23697/
http://www.organic-chemistry.org/chemicals/reductions/tetramethyldisiloxane-TMDSO.shtm
https://www.infona.pl/resource/bwmeta1.element.elsevier-722236cc-df38-37aa-bbed-029ec07d525f

2401-73-2
3277-26-7
Synthesis of 1,1,3,3-Tetramethyldisiloxane from 1,3-DICHLOROTETRAMETHYLDISILOXANE

1,1,3,3-Tetramethyldisiloxane Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 442)Suppliers
Supplier Tel Email Country ProdList Advantage
SIMAGCHEM CORP
+86-13806087780 sale@simagchem.com China 17365 58
CD Chemical Group Limited
+8615986615575 info@codchem.com China 20342 58
Wuhan Kemi-Works Chemical Co., Ltd.
+86-2785736489 +8618171418573 sales@kemiworks.com China 729 58
Shanghai Daken Advanced Materials Co.,Ltd
+86-371-66670886 info@dakenam.com China 18751 58
Shanghai Zhuangming Biopharma Co., Ltd.
+86-19189228086 +86-18858568638 sales@zmsilane.com China 643 58
Hebei Weibang Biotechnology Co., Ltd 		+8615531157085 abby@weibangbio.com China 8810 58
Shaanxi Dideu Medichem Co. Ltd 		+86-029-81138252 +86-18789408387 1057@dideu.com China 3959 58
Hebei Mojin Biotechnology Co., Ltd 		+86 13288715578 +8613288715578 sales@hbmojin.com China 12835 58
Hebei Yanxi Chemical Co., Ltd. 		+8617531190177 peter@yan-xi.com China 5857 58
Hebei Chuanghai Biotechnology Co,.LTD 		+86-13131129325 sales1@chuanghaibio.com China 5889 58

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View Lastest Price from 1,1,3,3-Tetramethyldisiloxane manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
1,1,3,3-Tetramethyldisiloxane pictures 2024-12-22 1,1,3,3-Tetramethyldisiloxane
3277-26-7
 US $100.00-75.00 / kg 1kg 99% 5000Ton HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
1,1,3,3-Tetramethyldisiloxane pictures 2024-12-20 1,1,3,3-Tetramethyldisiloxane
3277-26-7
 US $10.00 / kg 1kg 99% 20 ton Hebei Zhuanglai Chemical Trading Co Ltd
Tetramethyldisiloxane pictures 2024-12-16 Tetramethyldisiloxane
3277-26-7
 US $9.89-8.97 / kg 200kg 98.63% 8000 tons per year Iota silicone oil (Anhui) Co.,ltd.
1,3-Dihydrotetramethyldisiloxane Bis(dimethylsilyl) oxide bis(dimethylsilyl)oxide CT2030 dimethylsilylether sym-Tetramethyldisiloxane (CH3)2HSiOSiH(CH3)2 1,1,3,3-tetramethyl-disiloxan SILOXANE HSI2 1,1,3,3-TETRAMETHYLDISILOXANE BIS(DIMETHYLSILYL) ETHER 1,1,3,3-TETRAMETHYLDISILOXANE,WACKER QUALITY Tetramethyldisiloxan 1,1,3,3,-TETRAMETHYLDISLOXANE 1,1,3,3-TETRAMETHYLDISILOXANE 97+% 1,1,3,3-Tetramethyl-1,3-dihydrodisiloxane 1,1,3,3-Tetramethyl-1,3-disiloxane 1,1,3,3-Tetramethyl dihydro disiloxane 1,1,3,3-Tetramethyld 1,1,3,3-TetraMethyldisiloxane, 97% 100ML 1,1,3,3-TETRAMETHYLDISILOXANE FOR SYNTHE Tetramethyldiydrodisiloxane 1,1,3,3-Tetramethyldisiloxane, 99+% TMDSO (99.9999%-Si) PURATREM 1,1,3,3-Tetramethyldisiloxane, 98.5% (dimethyl-λ3-silanyl)oxy-dimethylsilicon (dimethyl-λ3-silanyl)oxy-dimethylsilicon ETRAMETHYLDISILOXANE(CAS: 3277-26-7) NSC 155369 1,1,3,3-Tetramethyldisiloxane (TMDS) extrapure, 98% 1,1-Dihydro-1,1,3,3-tetramethyldisiloxane 1,1,3,3-Tetramethyldisiloxane 3277-26-7 TMDSO TMDSO 1,1,3,3-Tetramethyldisiloxane [(dimethylsilyl)oxy]dimethylsilane Dimethylsilyl ethe TETRAMETHYLDISILOXANE Dimethylsilyl ether Disiloxane, 1,1,3,3-tetramethyl- (Me2HSi)2O TMDO TMDSO 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine Hydrogen containing double head (1,1,3, 3-tetramethyldisiloxane) 1,1,3,3-Tetramethyldisiloxane CAS.3277-26-7 DK740 DK741 DK265 1,1,3,3-Tetramethyldisiloxane(TMDS) 1,1,3,3-Tetramethyldisiloxane, ≥ 97.0% DKFELEX0190 3277-26-7 277-26-7 CH32SiH2O C4H14OSi2 Organometallic Reagents Organosilicon Si-H Compounds Si-O Compounds Si (Classes of Silicon Compounds)