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CAS No. : | 18420-09-2 | MDL No. : | MFCD00053754 |
Formula : | C8H22O3Si2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | NPOYZXWZANURMM-UHFFFAOYSA-N |
M.W : | 222.43 | Pubchem ID : | 87635 |
Synonyms : |
|
Signal Word: | Danger | Class: | 3 |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | 1993 |
Hazard Statements: | H225-H315-H319-H335 | Packing Group: | Ⅲ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; water weitere Nebenprodukte: Verbindungen C2H5OSi(CH3)2O<Si(CH3)2O>nSi(CH3)2OC2H5 (n = 1 bis 5 und 7 bis 9); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; water weitere Nebenprodukte: Verbindungen der Struktur C2H5OSi(CH3)2O<Si(CH3)2O>nSi(CH3)2OC2H5 (n = 1 bis 6 und 8 bis 9); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; water weitere Nebenprodukte: Verbindungen C2H5OSi(CH3)2O<Si(CH3)2O>nSi(CH3)2OC2H5 (n = 1 bis 7 und 9); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; water weitere Nebenprodukte: Verbindungen C2H5OSi(CH3)2O<Si(CH3)2O>nSi(CH3)2OC2H5 (n = 1 bis 8); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; water weitere Nebenprodukte: Verbindungen C2H5OSi(CH3)2O<Si(CH3)2O>nSiCH3)2OC2H5 (n = 2 bis 9); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; water weitere Nebenprodukte: Verbindungen C2H5OSi(CH3)2O<Si(CH3)2O>nSi(CH3)2OC2H5 (n = 1 und 3 bis 9); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; water weitere Nebenprodukte: Verbindungen C2H5OSi(CH3)2O<Si(CH3)2O>nSi(CH3)2OC2H5 (n = 1 bis 2 und 4 bis 9); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; water weitere Nebenprodukte:Verbindungen C2H5OSi(CH3)2O<Si(CH3)2O>nSi(CH3)2OC2H5 (n = 1 bis 3 und 5 bis 9); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; water weitere Nebenprodukte: Verbindungen C2H5OSi(CH3)2O<Si(CH3)2O>nSi(CH3)2OC2H5 (n = 1 bis 4 und 6 bis 9); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In neat (no solvent) byproducts: C2H5OH; heating of (C6H5)2Si(OH)2 and ((CH3)2(C2H5O)Si)2O at 100°C for about 3 days;; sepn. of volatile products by distn. at about 100°C and 0.3 torr; recrystn. of the residue;; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
at 55℃; anschliessendes kurzes Kochen; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
at 55℃; anschliessendes Kochen; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With toluene-4-sulfonic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With Perbenzoic acid In benzene at 25℃; ΔH(excit.), ΔG(excit.), ΔS(excit.); | ||
With Perbenzoic acid In benzene at 35℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With toluene-4-sulfonic acid In n-heptane at 20 - 30℃; for 0.5h; other 2-ethoxy-1,3-dioxanes, other reagents; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Octamethyl-1,5-dioxa-3,7-diaza-2,4,6,8-tetrasilacyclooctan, 1,3-Dichlor-tetramethyldisiloxan, Ethanol; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; water |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 8.8 g 2: 1.7 g | Stage #1: 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane With sodium hydroxide at 15 - 26℃; Stage #2: chloro-trimethyl-silane In pentane at -50℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In not given partial hydrolysis of (CH3)2Si(OC2H5) at 70-100°C;; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With C2H5OH | ||
With C2H5OH |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | With carbon dioxide at 25℃; for 0.0833333h; Autoclave; High pressure; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: ethyl bromide With sodium In toluene for 1.5h; Inert atmosphere; Stage #2: 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane In toluene at 10℃; for 4h; | 4 Example 4 Dimethyl dimethoxy high boiling material distillation, take 1,3-dimethoxy-1,1,3,3-tetramethyldisiloxane fractions. N2, 23 g of sodium was added to 115 g of toluene, stirred to prepare sodium sands, and then 216 g of bromoethane was added and reacted for 1.5 h. 10 ° CA solution of 87.2 g of 1,3-dimethoxy-1,1,3,3-tetramethyldisiloxane was added and reacted for 4 h. Stop the reaction, coldBut filtered, and the filtrate was distilled in 1,3-ethyl-1,1,3,3-tetramethyldisiloxane. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: hexadecanyl bromide With magnesium In tetrahydrofuran Inert atmosphere; Stage #2: 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane In tetrahydrofuran at 90℃; for 6h; | 7 Example 7 The dimethyldiethoxy high boiling material is rectified and the 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane fraction is taken.Under argon, 26 gMagnesium tabletsAnd 305.3 g of bromohexadecane were prepared as a solution of cetylmagnesium bromide in tetrahydrofuran followed by the addition of 100 g of 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane solution, The reaction was carried out at 90 ° C for 6 h. The reaction was stopped, cooled and filtered, and the filtrate was distilled in 1,3-hexadecyl-1,1,3,3-tetramethyldisiloxane. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: benzyl chloride With magnesium In tetrahydrofuran Inert atmosphere; Stage #2: 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane In tetrahydrofuran at 100℃; for 6h; | 8 Example 8 Dimethyl dimethoxy high boiling material distillation, take 1,3-dimethoxy-1,1,3,3-tetramethyldisiloxane fractions. N2, 26 g of magnesium oxide and 126 g of benzyl chloride were prepared as benzyl magnesium chloride in tetrahydrofuran and 60 g1,3-dimethoxy-1,1,3,3-tetramethyldisiloxane solution was reacted at 100 ° C for 6 h. The reaction was stopped by cooling and filtering, and the filtrate was distilled in 1, 3-dibenzyl-1,1,3,3-tetramethyldisiloxane. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: 4-bromo-N,N-dimethylaniline With magnesium Inert atmosphere; Stage #2: 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane at 100℃; for 6h; | 9 Example 1 The dimethyldiethoxy high boiling material is rectified and the 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane fraction is taken. N2Under the care,26 g of magnesium and 200 g of N, N-dimethyl-p-bromoaniline were prepared in the form of a reagent, followed by the addition of 56.2 g1,3-diethoxy-1,1,3,3-tetramethyldisiloxane solution was reacted at 100 ° C for 6 h.The reaction was stopped, cooled and filtered, and the filtrate was distilled 1,3-N, N-dimethylbromobenzene-1,1,3,3-tetramethyldisiloxane. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: chlorobenzene With sodium In toluene at 100℃; for 4h; Inert atmosphere; Stage #2: 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane In toluene at 60℃; for 3h; | 1 Example 1 Distillation of dimethyldiethoxy high boiling material,1,3-diethoxy-1,1,3,3-tetramethyldisiloxane fraction. N2And 23 g of sodium was added to 115 g of toluene, and the mixture was heated to 100 ° C with stirring to prepare sodium sand. 112.5 g of chlorobenzene was added and reacted for 4 h. 60 ° C, 111.2 g of 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane solution was added and reacted for 3 h. The reaction was stopped, cooled and filtered, and the filtrate was distilled in 1,3-diphenyl-1,1,3,3-tetramethyldisiloxane. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: 1-bromo-butane With sodium In toluene for 1.5h; Inert atmosphere; Stage #2: 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane In toluene at 30℃; for 2h; | 2 Example 2 The dimethyldiethoxy high boiling material is rectified and the 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane fraction is taken. ArgonUnder the protection of 23g sodium into 115g toluene, stirring prepared sodium sand, then add 137 g bromobutane, reaction 1.5 h. 30 ° C, 55.6 g of 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane solution was added and reacted for 2 h. Stop the reaction,Cooled and filtered, and the filtrate was distilled in 1,3-dibutyl-1,1,3,3-tetramethyldisiloxane. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: 3-chloroprop-1-ene With sodium In toluene at 100℃; for 1.5h; Inert atmosphere; Stage #2: 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane In toluene at 10℃; for 3h; | 3 Example 3 The dimethyldiethoxy high boiling material is rectified and the 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane fraction is taken. N2, 23 g of sodium was added to 115 g of toluene and heated to 100 ° C with stirring to prepare sodium sands followed by 76.5 g of allyl chloride,Reaction for 1.5 h. 10 ° C, 67.3 g of 1,3-diethoxy-1,1,3,3-tetramethyldisiloxane solution was added and reacted for 3 h. The reaction was stopped, cooled and filtered, and the filtrate was distilled 1,3-diallyl-1,1,3,3-tetramethyldisiloxane. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium hydroxide at 240℃; for 3h; Autoclave; Molecular sieve; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
30 %Spectr. | With zirconium(IV) ethoxide at 180℃; Autoclave; |