Structural formula
Business number | 01MN |
---|---|
Molecular formula | C8H20O3Si |
Molecular weight | 192.33 |
label |
Triethoxyethylsilane, Triethoxyethyl silicon, Triethoxyethylsilane, Ethaneorthosilicic acid, triethyl ester, Triethoxy-ethylsilane, C2H5Si(OC2H5)3 |
Numbering system
CAS number:78-07-9
MDL number:MFCD00026754
EINECS number:201-080-1
RTECS number:VV4205000
BRN number:1362028
PubChem number:24845646
Physical property data
1. Properties: colorless liquid with special odor and slow decomposition in humid air.
2. Density (g/mL, 25/4℃): 0.86
3. Relative vapor density (g/mL, air=1): Uncertain
4. Melting point (ºC): 108-113℃
5. Boiling point (ºC, normal pressure): 159℃
6. Boiling point (ºC, 5.2kPa): Uncertain
7. Refractive index: 1.3853
8. Flash point (ºC): Uncertain
9. Specific rotation (º): Uncertain
10. Autoignition point or ignition temperature (ºC): Uncertain
11. Vapor pressure (kPa, 25ºC): Uncertain
12. Saturation Vapor pressure (kPa, 60ºC): Uncertain
13. Heat of combustion (KJ/mol): Uncertain
14. Critical temperature (ºC): Uncertain
15. Critical pressure (KPa): Uncertain
16. Log value of oil-water (octanol/water) partition coefficient: Uncertain
17. Explosion upper limit (% ,V/V): Uncertain
18. Lower explosion limit (%,V/V): Uncertain
19. Solubility: Insoluble in water, miscible in alcohol , ether, etc.
Toxicological data
1. Acute toxicity
Rat caliber LD50: 14mg/kg
Rabbit skin LD50: 16mL/kg
2. Neurotoxicity
Rabbit skin test: 500mg/24H; Rabbit eye test: 500mg/24H;
Ecological data
None yet
Molecular structure data
1. Molar refractive index: 53.60
2. Molar volume (cm3/mol): 215.4
3. Isotonic specific volume (90.2K ): 468.5
4. Surface tension (dyne/cm): 22.3
5. Polarizability (10-24cm3): 21.03
Compute chemical data
1. Number of hydrogen bond donors: 0
2. Number of hydrogen bond acceptors: 3
3. Number of rotatable chemical bonds: 7
4. Topological molecular polar surface area (TPSA): 27.7
5. Number of heavy atoms: 12
6. Surface charge: 0
7. Complexity : 91.5
8. The number of isotope atoms: 0
9. The number of determined atomic stereocenters: 0
10. The number of uncertain atomic stereocenters: 0
11. Determined number of stereocenters of chemical bonds: 0
12. Uncertain number of stereocenters of chemical bonds: 0
13. Number of covalent bond units :1
Properties and stability
Colorless and transparent liquid with a special smell. It decomposes slowly in moist air and is toxic if inhaled. Boiling point 159℃. Relative density 0.9207. Refractive index 1.3853. It is easily hydrolyzed and releases ethanol to form the condensation product of ethylsilanetriol. Reacting with organic metal compounds, the ethoxy group in the Si-OC2H5 bond in the molecule can be replaced by the corresponding organic group.
Storage method
This product should be sealed and stored in a cool place.
Synthesis method
It can be prepared by the reaction of ethyltrichlorosilane and absolute ethanol, or by the reaction of tetraethoxysilane and ethylmagnesium bromide.
Purpose
It is used to synthesize silicone intermediates and high molecular polymers, and can also be used as a cross-linking agent for room temperature vulcanized silicone rubber.