| Identification | More | [Name]
Methyldimethoxysilane | [CAS]
16881-77-9 | [Synonyms]
DIMETHOXY(METHYL)SILANE
METHYLDIMETHOXYSILANE
dimethoxymethyl-silan
Dimethoxymethylsilane. Methylhydrogendimethoxysilane.
Dimethoxy(methyl)silicon | [EINECS(EC#)]
240-914-9 | [Molecular Formula]
C3H10O2Si | [MDL Number]
MFCD00048019 | [Molecular Weight]
106.2 | [MOL File]
16881-77-9.mol |
| Chemical Properties | Back Directory | [Appearance]
Colorless clear liquid | [Melting point ]
-136°C | [Boiling point ]
61 °C | [density ]
0.861 | [vapor pressure ]
0.05-12790Pa at 20-25℃ | [refractive index ]
1.3600 | [Fp ]
<0°C | [storage temp. ]
Storage temp. 2-8°C | [solubility ]
Chloroform (Sparingly), Ethyl Acetate (Slightly) | [form ]
clear liquid | [color ]
Colorless to Almost colorless | [Specific Gravity]
0.861 | [Water Solubility ]
17-1000g/L at 20℃ | [Hydrolytic Sensitivity]
7: reacts slowly with moisture/water | [Sensitive ]
Moisture Sensitive | [BRN ]
2035898 | [LogP]
-2.4-1.4 | [CAS DataBase Reference]
16881-77-9(CAS DataBase Reference) | [EPA Substance Registry System]
16881-77-9(EPA Substance) |
| Questions And Answer | Back Directory | [Preparation]
Under certain temperature, catalyst, and initiator conditions, 1,3,5,7-tetramethylcyclotetrasiloxane and trimethyl orthoformate are reacted via chain cleavage and transesterification to yield methyldimethoxysilane. A stabilizer is added during the reaction to suppress the disproportionation reaction. |
| Hazard Information | Back Directory | [Hazard]
A poison by ingestion. A moderate eye irri-tant. | [Description]
Methyldimethoxysilane, reactive silane containing both Si-H and methoxy functional groups. The SiH group can be utilized for hydrosilylation to form methoxysilyl functional materials. Modification by hydrosilylation can bring the benefit of moisture cure or crosslinking by reactive methoxy groups. | [Chemical Properties]
Colorless clear liquid | [Uses]
Modifications by hydrosilylation reaction. | [Flammability and Explosibility]
Highlyflammable | [Toxics Screening Level]
The ITSL for methyldimethoxysilane is 92 μg/m3 based on an annual averaging time. |
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