| Identification | More | [Name]
Triethoxysilane | [CAS]
998-30-1 | [Synonyms]
TRIETHOXYSILANE
CT2500
triethoxy-silan
Triethoxysilane ((C2H5O)3SiH)
Triethoxysilicane
Triethoxysilane,96%
Triethoxysilaneelectronicgradeavailable
Silane, triethoxy-
HSi(OC2H5)3
TES
Triethoxysilyl hydride
TRIES
Tris(ethyloxy)silane | [EINECS(EC#)]
213-650-7 | [Molecular Formula]
C6H16O3Si | [MDL Number]
MFCD00009061 | [Molecular Weight]
164.27 | [MOL File]
998-30-1.mol |
| Chemical Properties | Back Directory | [Appearance]
Colorless, clear liquid | [Melting point ]
-170°C | [Boiling point ]
134-135 °C(lit.) | [density ]
0.89 g/mL at 25 °C(lit.)
| [vapor pressure ]
9.21hPa at 20℃ | [refractive index ]
n20/D 1.377(lit.)
| [Fp ]
80 °F
| [storage temp. ]
Store at 0-5°C | [solubility ]
sol diethyl ether, THF, alkanes, aromatic and chlorinated
solvents. | [form ]
A liquid | [Specific Gravity]
0.8753 | [Stability:]
Stable, but moisture sensitive. Flammable. Incompatible with strong oxidizing agents, strong acids, strong bases. | [Water Solubility ]
Insoluble in water. Soluble in organic solvents. | [Hydrolytic Sensitivity]
7: reacts slowly with moisture/water | [Sensitive ]
Moisture Sensitive | [BRN ]
1738989 | [InChIKey]
QQQSFSZALRVCSZ-UHFFFAOYSA-N | [CAS DataBase Reference]
998-30-1(CAS DataBase Reference) | [NIST Chemistry Reference]
Silane, triethoxy-(998-30-1) | [EPA Substance Registry System]
998-30-1(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
T+,C,T | [Risk Statements ]
R10:Flammable.
R26:Very Toxic by inhalation.
R34:Causes burns.
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
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 3384 6.1/PG 1
| [WGK Germany ]
3
| [RTECS ]
VV6682000
| [F ]
10-21 | [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
II | [HS Code ]
29209090 | [Hazardous Substances Data]
998-30-1(Hazardous Substances Data) |
| Hazard Information | Back Directory | [General Description]
Liquid. Used as a reducing agent. | [Reactivity Profile]
TRIETHOXYSILANE(998-30-1) has been involved in cases where TRIETHOXYSILANE(998-30-1) has disproportionated, generating silane (SiH4) which has a history of being pyrophoric. | [Air & Water Reactions]
May become pyrophoric, by generation of silane | [Health Hazard]
Toxicity is similar to silanes. Silanes are moderately irritating to skin, eyes, and mucous membranes. Silane compounds are toxic. | [Fire Hazard]
When heated to decomposition, TRIETHOXYSILANE emits acrid smoke and fumes. | [Description]
Triethoxysilane is an organosilicon compound with the formula HSi(OC2H5)3. It is a colourless liquid used in precious metal-catalysed hydrosilylation reactions. The resulting triethoxysilyl groups are often valued for attachment to silica surfaces.Compared to most compounds with Si-H bonds, triethoxysilane exhibits relatively low reactivity. Like most silyl ethers, triethoxysilane is susceptible to hydrolysis. As reducing agent, triethoxysilane can for example be used in reduction of amides, reduction of carbonyl compounds in the presence of cobalt(II) chloride as catalyst, Cu-catalyzed reductive hydroxymethylation of styrenes, and Rh-catalyzed hydrodediazoniation.? | [Chemical Properties]
Colorless, clear liquid | [Physical properties]
bp 134–135 °C; d 0.89 g cm?3. | [Uses]
Triethoxysilane is used in metal catalyzed hydrosilylation reactions. | [Uses]
Triethoxysilane is useful reagent for the hydrosilylation of carbon–carbon multiple
bonds; reducing agent for carbonyl groups | [Application]
Reduces esters in the presence of zinc hydride catalyst.
Reduces aldehydes and ketones to alcohols via the silyl
ethers in presence of fluoride ion. Gives 1,2-reduction of
enones to allyl alcohols. | [Flammability and Explosibility]
Highlyflammable | [Safety Profile]
Poison by intravenous route.Moderately toxic by inhalation. Flammable liquid. Whenheated to decomposition it emits acrid smoke andirritating fumes. | [Purification Methods]
Fractionate it using a column packed with glass helices of ca 15 theoretical plates in an inert atmosphere. Store it in aliquots in sealed ampoules because it is sensitive to moisture. [Spauschus et al. J Am Chem Soc 72 1377 1950, MacKenzie et al. J Am Chem Soc 72 2032 1950, Havill et al. J Org Chem 13 280 1948, Beilstein 1 IV 1359.] |
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