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Dimethoxydimethylsilane

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Name

Dimethoxydimethylsilane

EINECS 214-189-4
CAS No. 1112-39-6 Density 0.841 g/cm3
PSA 18.46000 LogP 0.98100
Solubility decomposes in water Melting Point -80 °C
Formula C4H12 O2Si Boiling Point 81.999 °C at 760 mmHg
Molecular Weight 120.224 Flash Point -34.808 °C
Transport Information UN 1993 3/PG 2 Appearance Colorless clear liquid
Safety 16-26-33-36/37/39 Risk Codes 11-36/37/38
Molecular Structure Molecular Structure of 1112-39-6 (Dimethyldimethoxysilane) Hazard Symbols IrritantXi,FlammableF
Synonyms

AY 43-004;Dimethyldimethoxysilane;LS 520;NSC 93882;TSL 8112;TSL 8117;

Article Data 63

Dimethoxydimethylsilane Synthetic route

124-41-4

sodium methylate

75-78-5

dimethylsilicon dichloride

1112-39-6

dimethyldimethoxysilan

Conditions
ConditionsYield
In methanol at 18 - 57℃; for 3.5h;99%
With diethyl ether
67-56-1

methanol

77214-38-1

1-(methoxydimethylsilyl)-3-(3-methoxy-1,1,3,3-tetramethyldisilazanyl)-2,2,4,4-tetramethyldisilazane

A

1112-39-6

dimethyldimethoxysilan

B

13270-85-4

1,3-bis(methoxydimethylsilyl)-2,2,4,4-tetramethylcyclodisilazane

Conditions
ConditionsYield
In hexaneA 90.5%
B 96.5%
67-56-1

methanol

isopropyltriphenylphosphonium symm-tetramethyldisilthianedithiolate

A

1112-39-6

dimethyldimethoxysilan

B

isopropyl-triphenyl-phosphonium; GENERIC INORGANIC ANION

Conditions
ConditionsYield
In benzene-d6A n/a
B 96%
67-56-1

methanol

14850-05-6

1-(chlorodimethylsilyl)-3-(3-chloro-1,1,3,3-tetramethyl-1-disilazanyl)-2,2,4,4-tetramethylcyclodisilazane

1112-39-6

dimethyldimethoxysilan

Conditions
ConditionsYield
for 0.5h;95%
541-05-9

Hexamethylcyclotrisiloxane

616-38-6

carbonic acid dimethyl ester

1112-39-6

dimethyldimethoxysilan

Conditions
ConditionsYield
With aluminum oxide; potassium fluoride at 400℃;94%
67-56-1

methanol

2329-10-4

1,3-bis(chlorodimethylsilyl)-2,2,4,4-tetramethylcyclodisilazane

1112-39-6

dimethyldimethoxysilan

Conditions
ConditionsYield
In hexane for 0.5h;92%
7595-34-8

bis(ethylmercapto)dimethylsilane

122-51-0

orthoformic acid triethyl ester

A

1112-39-6

dimethyldimethoxysilan

B

6267-24-9

tris(ethylsulfanyl)methane

Conditions
ConditionsYield
With zinc(II) chloride In toluene at 0℃; for 5h;A 80%
B 90%
75-78-5

dimethylsilicon dichloride

1112-39-6

dimethyldimethoxysilan

Conditions
ConditionsYield
With C6H5N(CH3)2; CH3OH90%
With methanol; N,N-dimethyl-aniline90%
With C6H5N(CH3)2; CH3OH40-50
1455-13-6

deuteromethanol

302841-08-3

2-methyl-3-triphenylphosphonio-2-silabutane-2-thiolate

A

1112-39-6

dimethyldimethoxysilan

B

ethyl-triphenyl-phosphonium; GENERIC INORGANIC ANION

C

C20H18(2)H2P(1+)*HS(1-)

D

C20H19(2)HP(1+)*HS(1-)

Conditions
ConditionsYield
Isomerization; Elimination;A 80%
B 30%
C 40%
D 30%
1833-51-8

chloromethyldimethylphenylsilane

124-41-4

sodium methylate

A

1112-39-6

dimethyldimethoxysilan

B

17881-88-8

methoxydimethylphenylsilane

C

17876-91-4

dimethyl-phenyl-methoxymethylsilane

Conditions
ConditionsYield
In methanol at 65℃; for 12h; Product distribution; variation of reactants, solvents, temperature and reaction time;A 6%
B 5%
C 79%
In methanol at 65℃; for 12h;A 6%
B 5%
C 79%

Dimethoxydimethylsilane Specification

Dimethoxydimethylsilane, with the CAS registry number 1112-39-6, is also named as Silane,dimethoxydimethyl-. It belongs to the product categories of Dialkoxysilanes; Functional Materials; Si (Classes of Silicon Compounds); Silane Coupling Agents; Silane Coupling Agents (Intermediates); Si-O Compounds; Alkoxy Silanes; Crosslinkers; Crosslinking Agents; Di-Alkoxy Silanes; Silane Coupling Agents/Adhesion Promoters; Chemical Synthesis; Contact Printing; Materials Science; Micro/NanoElectronics; Organometallic Reagents; Organosilicon. Its EINECS number is 214-189-4. This chemical's molecular formula is C4H12O2Si and molecular weight is 120.22. It is used as constitution controller and chain extender agents. This chemical is stable at common pressure and temperature, and it should be sealed and stored in containers with dry inert gas which are placed in cool, ventilated and dry places. Moreover, it should be protected from oxides and water. 

Physical properties of Dimethoxydimethylsilane are: (1)ACD/LogP: -0.409; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.41; (4)ACD/LogD (pH 7.4): -0.41; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 14.27; (8)ACD/KOC (pH 7.4): 14.27; (9)#H bond acceptors: 2; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 18.46 Å2; (13)Index of Refraction: 1.376; (14)Molar Refractivity: 32.788 cm3; (15)Molar Volume: 143.024 cm3; (16)Polarizability: 12.998×10-24cm3; (17)Surface Tension: 16.9 dyne/cm; (18)Density: 0.841 g/cm3; (19)Flash Point: -34.808 °C; (20)Enthalpy of Vaporization: 30.923 kJ/mol; (21)Boiling Point: 81.999 °C at 760 mmHg; (22)Vapour Pressure: 89.0 mmHg at 25°C.

Preparation of Dimethoxydimethylsilane: this chemical can be prepared by N,N'-Bis-(chlordimethylsilyl)-tetramethyl-cyclodisilazan and methanol. This reaction will need solvent hexane with the reaction time of 0.5 hour. The yield is about 92%.

Dimethoxydimethylsilane can be prepared by N,N'-Bis-(chlordimethylsilyl)-tetramethyl-cyclodisilazan and methanol

Uses of Dimethoxydimethylsilane: it can be used to produce 2,2-dimethyl-[1,3,6,2]dioxazasilocane by heating. It will need reagent Na and solvent benzene. The yield is about 52%.

Dimethoxydimethylsilane can be used to produce 2,2-dimethyl-[1,3,6,2]dioxazasilocane by heating

When you are using this chemical, please be cautious about it as the following:
This chemical is flammable, so you should keep it away from sources of ignition - No smoking. It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. You need to take precautionary measures against static discharges. When using it, you need wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: O(C)[Si](OC)(C)C
(2)Std. InChI: InChI=1S/C4H12O2Si/c1-5-7(3,4)6-2/h1-4H3
(3)Std. InChIKey: JJQZDUKDJDQPMQ-UHFFFAOYSA-N

The toxicity data is as follows:  

Organism

Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LC inhalation > 21350mg/m3/4 (21350mg/m3) SENSE ORGANS AND SPECIAL SENSES: LACRIMATION: EYE

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES

BEHAVIORAL: EXCITEMENT
National Technical Information Service. Vol. OTS0539962,

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