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        1,1,3,3-Tetramethyldisiloxane

        1,1,3,3-Tetramethyldisiloxane
        1,1,3,3-Tetramethyldisiloxane structure
        CAS No.
        3277-26-7
        Chemical Name:
        1,1,3,3-Tetramethyldisiloxane
        Synonyms
        TMDO;TMDSO;CT2030;(Me2HSi)2O;SILOXANE HSI2;dimethylsilylether;Dimethylsilyl ether;(CH3)2HSiOSiH(CH3)2;Tetramethyldisiloxan;1,1,3,3-Tetramethyld
        CBNumber:
        CB5355451
        Molecular Formula:
        C4H14OSi2
        Formula Weight:
        134.32
        MOL File:
        3277-26-7.mol

        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. 
        2-8°C
        form 
        liquid
        Specific Gravity
        0.757
        color 
        colorless
        explosive limit
        0.8-62.9%(V)
        Water Solubility 
        DECOMPOSES
        Sensitive 
        Moisture Sensitive
        BRN 
        1733364
        InChIKey
        NVYQDQZEMGUESH-UHFFFAOYSA-N
        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)
        SAFETY
        • Risk and Safety Statements
        Symbol(GHS) 
        GHS02
        Signal word  Danger
        Hazard statements  H225
        Precautionary statements  P210-P370+P378-P403+P235-P243-P403+P233
        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
        10-21
        Autoignition Temperature 240 °C
        TSCA  Yes
        HazardClass  3
        PackingGroup  II
        HS Code  29310095

        1,1,3,3-Tetramethyldisiloxane price More Price(10)

        Manufacturer Product number Product description CAS number Packaging Price Updated Buy
        Sigma-Aldrich 235733 1,1,3,3-Tetramethyldisiloxane 97% 3277-26-7 25g $26.1 2019-12-02 Buy
        Sigma-Aldrich 235733 1,1,3,3-Tetramethyldisiloxane 97% 3277-26-7 100g $79.4 2019-12-02 Buy
        TCI Chemical T1437 1,1,3,3-Tetramethyldisiloxane >97.0%(GC) 3277-26-7 25mL $19 2019-12-02 Buy
        TCI Chemical T1437 1,1,3,3-Tetramethyldisiloxane >97.0%(GC) 3277-26-7 250mL $114 2019-12-02 Buy
        Alfa Aesar B23697 1,1,3,3-Tetramethyldisiloxane, 97% 3277-26-7 100g $102 2019-12-02 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. 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 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.

        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


        1,1,3,3-Tetramethyldisiloxane Suppliers

        Global( 236)Suppliers
        Supplier Tel Fax Email Country ProdList Advantage
        Hangzhou Earth Chemical Co., Ltd. 0571-82699306 82699148 13906719152 15867163778
        0571-82609040 sales@dadichemical.com China 29 58
        Wuhan Kemi-Works Chemical Co., Ltd 86-27-85736489
        86-27-85736485 info@kemiworks.net; sales@kemiworks.com China 542 57
        Kingfirst Chemical (Nanjing) Co.,Ltd +86-025-84522992 84524602 13805186390
        +86 025 84521617 marketing@kingfirstchem.com China 74 58
        Shandong Wanda Organosilicon New Materials Co., Ltd. 021-54177116
        +86 (21) 54302881 ex 804 sales@wandachem.com China 50 68
        Jiangxi New jiayi New Materials Co., Ltd. 15988432077
        sales@xjysi.com CHINA 30 58
        Shanghai Qianhe Biological Technology Co., Ltd. 021-58337595- ;021-58337595
        021-58337595 93732879@qq.com;93732879@qq.com; China 203 58
        Zhuangming New Material Technology Jiangsu Co., Ltd. 17312398916
        sales@zhuangming.net CHINA 300 58
        Hubei shengdali Chemical Co., Ltd 027-83629626-
        027-83629626 1541018161@qq.com China 194 58
        J & K SCIENTIFIC LTD. 010-82848833- ;010-82848833-
        86-10-82849933 jkinfo@jkchemical.com;market6@jkchemical.com China 96505 76
        Meryer (Shanghai) Chemical Technology Co., Ltd. 21-61259100-
        86-21-61259102 sh@meryer.com China 40268 62

        Related articles


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

        Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
        2019-07-16 TMDSO 1,1,3,3-Tetramethyldisiloxane
        3277-26-7
        US $15.50 / KG 1KG 99.50% in stock CAS 3277-26-7 36 MT per month Chemwill Asia Co.,Ltd.
        2019-07-16 1,1,3,3-Tetramethyldisiloxane
        3277-26-7
        US $22.50 / KG 1KG 99.50% in stock CAS 3277-26-7 36 MT per month Chemwill Asia Co.,Ltd.
        2019-07-16 1,1,3,3-Tetramethyldisiloxane 3277-26-7 TMDSO
        3277-26-7
        US $19.50 / KG 1KG 99.50% in stock CAS 3277-26-7 36 MT per month Chemwill Asia Co.,Ltd.

        1,1,3,3-Tetramethyldisiloxane Spectrum


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