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CAS No.: | 1112-39-6 |
---|---|
Name: | Dimethyldimethoxysilane |
Article Data: | 63 |
Molecular Structure: | |
Formula: | C4H12 O2Si |
Molecular Weight: | 120.224 |
Synonyms: | AY 43-004;Dimethyldimethoxysilane;LS 520;NSC 93882;TSL 8112;TSL 8117; |
EINECS: | 214-189-4 |
Density: | 0.841 g/cm3 |
Melting Point: | -80 °C |
Boiling Point: | 81.999 °C at 760 mmHg |
Flash Point: | -34.808 °C |
Solubility: | decomposes in water |
Appearance: | Colorless clear liquid |
Hazard Symbols: | Xi,F |
Risk Codes: | 11-36/37/38 |
Safety: | 16-26-33-36/37/39 |
Transport Information: | UN 1993 3/PG 2 |
PSA: | 18.46000 |
LogP: | 0.98100 |
Conditions | Yield |
---|---|
In methanol at 18 - 57℃; for 3.5h; | 99% |
With diethyl ether |
methanol
1-(methoxydimethylsilyl)-3-(3-methoxy-1,1,3,3-tetramethyldisilazanyl)-2,2,4,4-tetramethyldisilazane
A
dimethyldimethoxysilan
B
1,3-bis(methoxydimethylsilyl)-2,2,4,4-tetramethylcyclodisilazane
Conditions | Yield |
---|---|
In hexane | A 90.5% B 96.5% |
Conditions | Yield |
---|---|
In benzene-d6 | A n/a B 96% |
methanol
1-(chlorodimethylsilyl)-3-(3-chloro-1,1,3,3-tetramethyl-1-disilazanyl)-2,2,4,4-tetramethylcyclodisilazane
dimethyldimethoxysilan
Conditions | Yield |
---|---|
for 0.5h; | 95% |
Hexamethylcyclotrisiloxane
carbonic acid dimethyl ester
dimethyldimethoxysilan
Conditions | Yield |
---|---|
With aluminum oxide; potassium fluoride at 400℃; | 94% |
methanol
1,3-bis(chlorodimethylsilyl)-2,2,4,4-tetramethylcyclodisilazane
dimethyldimethoxysilan
Conditions | Yield |
---|---|
In hexane for 0.5h; | 92% |
bis(ethylmercapto)dimethylsilane
orthoformic acid triethyl ester
A
dimethyldimethoxysilan
B
tris(ethylsulfanyl)methane
Conditions | Yield |
---|---|
With zinc(II) chloride In toluene at 0℃; for 5h; | A 80% B 90% |
Conditions | Yield |
---|---|
With C6H5N(CH3)2; CH3OH | 90% |
With methanol; N,N-dimethyl-aniline | 90% |
With C6H5N(CH3)2; CH3OH | 40-50 |
deuteromethanol
2-methyl-3-triphenylphosphonio-2-silabutane-2-thiolate
A
dimethyldimethoxysilan
Conditions | Yield |
---|---|
Isomerization; Elimination; | A 80% B 30% C 40% D 30% |
chloromethyldimethylphenylsilane
sodium methylate
A
dimethyldimethoxysilan
B
methoxydimethylphenylsilane
C
dimethyl-phenyl-methoxymethylsilane
Conditions | Yield |
---|---|
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% |
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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%.
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%.
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, |