• <tr id="e8peo"></tr>
    <big id="e8peo"><em id="e8peo"></em></big>

    <big id="e8peo"><nobr id="e8peo"></nobr></big>
  • <object id="e8peo"><nobr id="e8peo"></nobr></object>
    ChemicalBook >> CAS DataBase List >>1,1,3,3-Tetramethyldisiloxane


    CAS No.
    Chemical Name:
    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
    Molecular Formula:
    Molecular Weight:
    MDL Number:
    MOL File:
    MSDS File:
    Last updated:2023-11-16 16:15:21

    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
    Specific Gravity 0.757
    color colorless
    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
    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)


    Risk and Safety Statements

    Symbol(GHS)  GHS hazard pictograms
    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
    Autoignition Temperature 240 °C
    TSCA  Yes
    HazardClass  3
    PackingGroup  II
    HS Code  29310095
    NFPA 704
    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 $35.1 2023-06-20 Buy
    Sigma-Aldrich 235733 1,1,3,3-Tetramethyldisiloxane 97% 3277-26-7 100g $116 2023-06-20 Buy
    TCI Chemical T1437 1,1,3,3-Tetramethyldisiloxane >97.0%(GC) 3277-26-7 25mL $25 2023-06-20 Buy
    TCI Chemical T1437 1,1,3,3-Tetramethyldisiloxane >97.0%(GC) 3277-26-7 250mL $138 2023-06-20 Buy
    Alfa Aesar B23697 1,1,3,3-Tetramethyldisiloxane, 97% 3277-26-7 25g $42.5 2023-06-20 Buy
    Product number Packaging Price Buy
    235733 25g $35.1 Buy
    235733 100g $116 Buy
    T1437 25mL $25 Buy
    T1437 250mL $138 Buy
    B23697 25g $42.5 Buy

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


    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


    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.


    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.


    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.]



    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( 395)Suppliers
    Supplier Tel Email Country ProdList Advantage
    +86-13806087780 sale@simagchem.com China 17369 58
    CD Chemical Group Limited
    +8615986615575 info@codchem.com China 20356 58
    Wuhan Kemi-Works Chemical Co., Ltd.
    +86-2785736489 +8618171418573 sales@kemiworks.com China 704 58
    Henan DaKen Chemical CO.,LTD.
    +86-0371-66670886 info@dakenchem.com China 14738 58
    Hebei Mojin Biotechnology Co., Ltd
    15028179902 +8615028179902 sales@hbmojin.com China 12241 58
    Hebei Yanxi Chemical Co., Ltd.
    +8617531190177 peter@yan-xi.com China 5948 58
    Capot Chemical Co.,Ltd.
    571-85586718 +8613336195806 sales@capotchem.com China 29767 60
    Jiangxi New jiayi New Materials Co., Ltd.
    15988280056 mina@xjysi.com CHINA 27 55
    Hangzhou Bayee Chemical Co., Ltd.
    0086-571-86990109 rachelhoo@bayeechem.com China 104 55
    Henan Tianfu Chemical Co.,Ltd.
    +86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21722 55

    Related articles

    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 2023-11-16 1,1,3,3-Tetramethyldisiloxane
    US $50.00-3.00 / kg 1kg 0.99 20 tons Hebei Yanxi Chemical Co., Ltd.
    1,1,3,3-Tetramethyldisiloxane pictures 2023-11-01 1,1,3,3-Tetramethyldisiloxane
    US $0.00-0.00 / kg 0.1kg 99.0%min 20000kg Hangzhou ICH Biofarm Co., Ltd
    1,1,3,3-Tetramethyldisiloxane pictures 2023-09-08 1,1,3,3-Tetramethyldisiloxane
    US $0.00 / KG 1KG 99% 50000KG/month Hebei Mojin Biotechnology 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) 3277-26-7 277-26-7 CH32SiH2O C4H14OSi2 Organometallic Reagents Organosilicon Si-H Compounds Si-O Compounds Si (Classes of Silicon Compounds) Reduction Siloxanes
  • <tr id="e8peo"></tr>
    <big id="e8peo"><em id="e8peo"></em></big>

    <big id="e8peo"><nobr id="e8peo"></nobr></big>
  • <object id="e8peo"><nobr id="e8peo"></nobr></object>