3,5-BIS-(CHLOROMETHYL)OCTAMETHYLTETRASILOXANE - Names and Identifiers
Name | 3,5-BIS-(CHLOROMETHYL)OCTAMETHYLTETRASILOXANE
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Synonyms | 3,5-Bis(chloromethyl)octamethyltetrasiloxane 3,5-BIS-(CHLOROMETHYL)OCTAMETHYLTETRASILOXANE 3,5-Bis(chloromethyl)-1,1,1,3,5,7,7,7-octamethyltetrasiloxane chloromethyl-(chloromethyl-methyl-trimethylsilyloxysilyl)oxy-methyl-trimethylsilyloxysilane chloromethyl-[[[chloromethyl(dimethyl)silyl]oxy-dimethyl-silyl]oxy-dimethyl-silyl]oxy-dimethyl-silane
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CAS | 17988-79-3
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InChI | InChI=1/C10H28Cl2O3Si4/c1-16(2,9-11)13-18(5,6)15-19(7,8)14-17(3,4)10-12/h9-10H2,1-8H3 |
3,5-BIS-(CHLOROMETHYL)OCTAMETHYLTETRASILOXANE - Physico-chemical Properties
Molecular Formula | C10H28Cl2O3Si4
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Molar Mass | 379.58 |
Density | 1.006 |
Melting Point | -77°C |
Boling Point | 128°C/10mmHg |
Specific Gravity | 1.006 |
Sensitive | 4: no reaction with water under neutral conditions |
Refractive Index | 1.4210 |
3,5-BIS-(CHLOROMETHYL)OCTAMETHYLTETRASILOXANE - Risk and Safety
3,5-BIS-(CHLOROMETHYL)OCTAMETHYLTETRASILOXANE - Introduction
3,5-bis-(CHLOROMETHYL) octamethyl tetrasilane is an organosilicon compound with the formula [(CH3)3SiO]4Si(CH2Cl)2. The following is a description of its nature, use, preparation and safety information:
Nature:
1. Appearance: colorless or light yellow liquid.
2. Density: about 1.16 g/cm.
3. Boiling point: About 100-120 ℃.
4. Vapor pressure: low.
Use:
1. 3,5-bis-(CHLOROMETHYL) octamethyltetrasilane can be used as a reagent and catalyst in organic synthesis.
2. In organic synthesis, it can be used for the synthesis of block polymers, the preparation of specific functional organosilicon compounds, etc.
3. Because the compound has low surface tension and good dispersion, it can be used in coatings, adhesives, lubricants and other fields.
Method:
The preparation method of 3,5-bis-(CHLOROMETHYL)OCTAMETHYLTETRASILOXANE is relatively complicated. The following is a commonly used method:
3,5-dimethyl-4-chlorothiophene is first prepared by reacting 1,3-dimethyltetrahydrothiophene with metal chloride (such as thionyl chloride, chlorosulfonyl chloride or sodium hypochlorite). Subsequently, the prepared 3,5-dimethyl-4-chlorothiophene and trimethyloxysilane were reacted in a tetrahydrofuran solution to obtain 3,5-bis-(CHLOROMETHYL) octamethyltetrasilane.
Safety Information:
1. 3,5-bis-(CHLOROMETHYL) octamethyltetrasilane may cause irritation to eyes, skin and respiratory system. Protective gloves, protective glasses and dust mask should be worn when using.
2. Avoid contact with the compound solution or vapor into the eyes, mouth and digestive tract.
3. Store away from fire and high temperature.
4. For accidental contact, rinse immediately with plenty of water and seek medical help if necessary.
5. Before use, please read and follow the relevant safety guidelines and chemical procedures.
Last Update:2024-04-10 22:29:15