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Chlorotrimethylsilane Basic information
|
Product Name: |
Chlorotrimethylsilane |
|
Synonyms: |
(CH3)3SiCl; DOW CORNING(R) PRODUCT Z-1224; CHLOROTRIMETHYLSILANE; SILANE M3; TMCS; TMSCL; TRIMETHYLSILYL CHLORIDE; TRIMETHYL SILICON CHLORIDE |
|
CAS: |
75-77-4 |
|
MF: |
C3H9ClSi |
|
MW: |
108.64 |
|
EINECS: |
200-900-5 |
Chlorotrimethylsilane Chemical Properties
| Melting point | −40 °C(lit.) |
| Boiling point | 57 °C(lit.) |
| density | 0.857 g/mL at 25 °C |
| vapor density | 3.7 (vs air) |
| vapor pressure | 100 mm Hg ( 25 °C) |
| refractive index | n20/D 1.500 |
| Fp | 104 °F |
| storage temp. | Store below +30°C. |
| solubility | Miscible with ether, benzene, diethylether and perchloroethylene. |
| form | Liquid |
| Specific Gravity | 0.8536 (27℃) |
| color | Clear colorless |
| explosive limit | 1.5-46%(V) |
| Water Solubility | REACTS |
| Sensitive | Moisture Sensitive |
| Hydrolytic Sensitivity | 8: reacts rapidly with moisture, water, protic solvents |
| BRN | 1209232 |
| Stability: | Stable. Highly flammable - note low flash point. Reacts violently with water. Incompatible with water, moisture, strong oxidizing agents, strong acids, strong bases, aldehydes, alcohols, amines, esters, ketones. |
Chlorotrimethylsilane Usage And Synthesis
| Description | Chlorotrimethylsilane is a valuable reagent for the protection of the hydroxyl function in organic synthesis. It should be distilled from calciumhydride (or tributylamine) under nitrogen before use,and stored and weighed under nitrogen. Use of the reagent without purification has been reported to lead to explosions. Chlorotrimethylsilane may contain dichlorodimethylsilane as an impurity. This may be removed before distillation by very cautious treatment with a small amount of water,which hydrolyses the dichloro compound more rapidly. Excess chlorotrimethylsilane in a reaction mixture may be destroyed by the very careful addition of aqueous sodium hydrogencarbonate solution. |
| Chemical Properties | Trimethylchlorosilane is a colorless fuming liquid with a pungent odor. Readily hydrolyzed with liberation of hydrogen chloride; soluble in benzene, ether and perchloroethylene. Chlorotrimethylsilane is a chloro-organosilane compound mainly used for silylation reactions. |
| Uses | Chlorotrimethylsilane is a typical Silane Blocking Agent, which can protect or deprotect functional groups selectively. It have been used in the preparation of volatile derivatives of a wide range of compounds for GC analysis, and used for silylation and as a protection group in the process of various organic synthesis. It is used in the production of trimethylsilyl halides, pseudohalides and various organic silicon compounds. It is also used to produce hexamethyldisilane by reduction. |
Chlorotrimethylsilane Specification
|
Mass Fraction of Trimethylchlorosilane |
≥99.0% |
|
Mass Fraction of Methyltrichlorodilane |
≤0.5% |
|
Mass Fraction of Sicl4 |
≤0.1% |
One of the preparation methods: methyl chloride and silicon powder are directly synthesized in the next step under the catalysis of cuprous chloride to generate a mixture of methylchlorosilane, which can be purified by distillation to obtain trimethylchlorosilane and other monomers. Laboratory preparation can react tetramethylsilane with acetyl chloride in the presence of aluminum trichloride
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