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

1,1,3,3-Tetramethyldisiloxane

Product Name
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
Formula Weight
134.32
MOL File
3277-26-7.mol
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1,1,3,3-Tetramethyldisiloxane Property

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)
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)
NIST Chemistry Reference
((CH3)2SiH)2O(3277-26-7)
EPA Substance Registry System
Disiloxane, 1,1,3,3-tetramethyl- (3277-26-7)
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Safety

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
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H225Highly Flammable liquid and vapour

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P242Use only non-sparking tools.

P243Take precautionary measures against static discharge.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
235733
Product name
1,1,3,3-Tetramethyldisiloxane
Purity
97%
Packaging
25g
Price
$36.5
Updated
2024/03/01
Sigma-Aldrich
Product number
235733
Product name
1,1,3,3-Tetramethyldisiloxane
Purity
97%
Packaging
100g
Price
$121
Updated
2024/03/01
TCI Chemical
Product number
T1437
Product name
1,1,3,3-Tetramethyldisiloxane
Purity
>97.0%(GC)
Packaging
25mL
Price
$26
Updated
2024/03/01
TCI Chemical
Product number
T1437
Product name
1,1,3,3-Tetramethyldisiloxane
Purity
>97.0%(GC)
Packaging
250mL
Price
$142
Updated
2024/03/01
Alfa Aesar
Product number
B23697
Product name
1,1,3,3-Tetramethyldisiloxane, 97%
Packaging
25g
Price
$38.65
Updated
2024/03/01
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1,1,3,3-Tetramethyldisiloxane Chemical Properties,Usage,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

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

Raw materials

Preparation Products

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1,1,3,3-Tetramethyldisiloxane Suppliers

Belgium 2 China 359 Czech 1 Europe 1 France 1 Germany 6 India 9 Italy 1 Japan 7 New Zealand 1 Singapore 1 Slovakia 1 South Korea 1 Switzerland 2 Turkey 1 United Kingdom 9 United States 34 Global 437
Alfa Aesar, Thermo Fisher Scientific
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Germany
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5123
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Alster Unichem GmbH
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info@alsterunichem.com
Country
Germany
ProdList
7
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Service Chemical Inc.
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sales@chemos-group.com
Country
Germany
ProdList
6350
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71
WACKER CHEMIE AG
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Germany
ProdList
141
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81
Merck Schuchardt OHG
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Email
schuchardt-vertrieb@merck.de
Country
Germany
ProdList
5827
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74
ABCR GmbH & CO. KG
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info@abcr.de
Country
Germany
ProdList
6831
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View Lastest Price from 1,1,3,3-Tetramethyldisiloxane manufacturers

HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
Product
1,1,3,3-Tetramethyldisiloxane 3277-26-7
Price
US $100.00-75.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000Ton
Release date
2024-08-13
Wuhan KEMI-WORKS Chemical Co., Ltd.
Product
1,1,3,3-Tetramethyldisiloxane 3277-26-7
Price
US $1.00/Kg/Drum
Min. Order
1KG
Purity
99% Min.
Supply Ability
20mt per month
Release date
2021-09-18
Hebei Weibang Biotechnology Co., Ltd
Product
1,1,3,3-Tetramethyldisiloxane 3277-26-7
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2024-11-01

3277-26-7, 1,1,3,3-TetramethyldisiloxaneRelated Search:

3-(2-Aminoethylamino)propyl-dimethoxymethylsilane 3-Aminopropyltriethoxysilane SILANE COUPLING AGENT 2,4,6,8-Tetramethylcyclotetrasiloxane METHACRYLOXYPROPYL TERMINATED POLYDIMETHYLSILOXANE 1,3-Bis(chloromethyl)-1,1,3,3-tetramethyldisiloxane 1,3-BIS(HYDROXYBUTYL)TETRAMETHYLDISILOXANE BIS(DICHLOROMETHYL)TETRAMETHYLDISILOXANE,1,3-BIS(DICHLOROMETHYL)TETRAMETHYLDISILOXANE,1,3-BIS(DICHLOROMETHYL)-1,1,3,3-TETRAMETHYLDISILOXANE BIS(3-CHLOROPROPYL)TETRAMETHYLDISILOXANE,1,3-BIS(CHLOROPROPYL)TETRAMETHYLDISILOXANE PLATINUM(0)-1,3-DIVINYL-1,1,3,3-TETRAMETHYLDISILOXANE COMPLEX 1,3-bis(3-glycidoxypropyl)tetramethyldisiloxane BIS(METHACRYLOXYPROPYL)TETRAMETHYLDISILOXANE,BIS(3-METHACRYLOXYPROPYL) TETRAMETHYLDISILOXANE 1,3-BIS(HYDROXYPROPYL)TETRAMETHYLDISILOXANE 1,3-DIPHENYL-1,1,3,3-TETRAMETHYLDISILOXANE 1,3-DIVINYL-1,1,3,3-TETRAMETHYLDISILOXANE BIS2-[3,4-(EPOXYCYCLOHEXYL)ETHYL]TETRAMETHYLDISILOXANE TETRAMETHYLDISILOXANE 1,3-Bis(3-aminopropyl)tetramethyldisiloxane

  • TETRAMETHYLDISILOXANE
  • 1,3-Dihydrotetramethyldisiloxane
  • Bis(dimethylsilyl) oxide
  • bis(dimethylsilyl)oxide
  • CT2030
  • Dimethylsilyl ether
  • dimethylsilylether
  • Disiloxane, 1,1,3,3-tetramethyl-
  • sym-Tetramethyldisiloxane
  • (CH3)2HSiOSiH(CH3)2
  • 1,1,3,3-tetramethyl-disiloxan
  • 1,1-Dihydro-1,1,3,3-tetramethyldisiloxane
  • TMDO
  • TMDSO
  • 1,1,3,3-Tetramethyldisiloxane 3277-26-7 TMDSO
  • TMDSO 1,1,3,3-Tetramethyldisiloxane
  • [(dimethylsilyl)oxy]dimethylsilane
  • 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
  • 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine
  • 1,1,3,3-Tetramethyl dihydro disiloxane
  • 1,1,3,3-Tetramethyld
  • (Me2HSi)2O
  • 1,1,3,3-TetraMethyldisiloxane, 97% 100ML
  • Dimethylsilyl ethe
  • 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-λ<sup>3</sup>-silanyl)oxy-dimethylsilicon
  • (dimethyl-λ3-silanyl)oxy-dimethylsilicon
  • ETRAMETHYLDISILOXANE(CAS: 3277-26-7)
  • NSC 155369
  • 1,1,3,3-Tetramethyldisiloxane (TMDS) extrapure, 98%
  • 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)