1,1,3,3-Tetramethyldisiloxane

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

Hebei Yanxi Chemical Co., Ltd.

Product: 1,1,3,3-Tetramethyldisiloxane 3277-26-7
Price: US $50.00-3.00/kg
Min. Order: 1kg
Purity: 0.99
Supply Ability: 20 tons
Release date: 2023-11-16

Hangzhou ICH Biofarm Co., Ltd

Product: 1,1,3,3-Tetramethyldisiloxane 3277-26-7
Price: US $0.00-0.00/kg
Min. Order: 0.1kg
Purity: 99.0%min
Supply Ability: 20000kg
Release date: 2023-06-09

Hebei Guanlang 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: 2023-02-13

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

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%

3277-26-7

277-26-7

CH32SiH2O

C4H14OSi2

Organometallic Reagents

Organosilicon

Si-H Compounds

Si-O Compounds

Si (Classes of Silicon Compounds)

Reduction