| Identification | More | [Name]
(Triacetoxy)ethylsilane | [CAS]
17689-77-9 | [Synonyms]
ETHYLTRIACETOXYSILANE
TRIACETOXYETHYLSILANE
ethvltriacetoxvsilane
ethyl-silanetriotriacetate
ethyltriacetoxysliane
Silanetriol,ethyl-,triacetate
ETHYLSILANETRIOLTRIACETATE
Ethylsilanetriyl triacetate | [EINECS(EC#)]
241-677-4 | [Molecular Formula]
C8H14O6Si | [MDL Number]
MFCD00053703 | [Molecular Weight]
234.28 | [MOL File]
17689-77-9.mol |
| Chemical Properties | Back Directory | [Appearance]
Colorless or yellowish transparent liquid | [Melting point ]
7-9°C | [Boiling point ]
98 °C4 mm Hg(lit.)
| [density ]
1.14 g/mL at 25 °C(lit.)
| [vapor pressure ]
2.67-5.1Pa at 20℃ | [refractive index ]
n20/D 1.411(lit.)
| [Fp ]
224 °F
| [Specific Gravity]
1.143 | [Water Solubility ]
Hydrolyzes in water. | [Hydrolytic Sensitivity]
7: reacts slowly with moisture/water | [Sensitive ]
Moisture Sensitive | [CAS DataBase Reference]
17689-77-9(CAS DataBase Reference) | [EPA Substance Registry System]
17689-77-9(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
C | [Risk Statements ]
R34:Causes burns. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . | [RIDADR ]
UN 3265 8/PG 2
| [WGK Germany ]
3
| [F ]
10-21 | [TSCA ]
Yes | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
29319090 |
| Hazard Information | Back Directory | [Chemical Properties]
Colorless or yellowish transparent liquid | [Uses]
Triacetoxy(ethyl)silane is used in sealants, the substance is used as a cross-linking agent and adhesion promoter. | [Flammability and Explosibility]
Nonflammable |
| Questions And Answer | Back Directory | [Introduction]
Ethyltriacetoxysilane (ETAS) is a clear to yellowish liquid with acrid odor of acetic acid (vinegar). It hydrolyzes in the presence of moisture (acetic acid is released) to form silanols, which can react with themselves to pro-duce siloxanes or bind to inorganic substrates.
It is used as curing agent in acetoxy crosslinking RTV-1 sealant formulations. Within the curing reaction acetic acid is produced as a byproduct. Therefore, the corrosive reaction of the byproduct with substances like marble or iron has to be taken in consideration when using acetate crosslinkers.
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