1,2-Bis(Triethoxysilyl)Ethane

• CAS: 16068-37-4
• Catalog Number: ACM16068374-4
• Category: Main Products
• Molecular Weight: 354.59
• Molecular Formula: C14H34O6Si2
• Description: It is Colorless transparent liquid.
• Synonyms: Ethylenebis(triethoxysilane);triethoxy(2-triethoxysilylethyl)silane;4,4,7,7-Tetraethoxy-3,8-dioxa-4,7-disiladecane
• IUPAC Name: triethoxy(2-triethoxysilylethyl)silane
• Canonical SMILES: CCO[Si](CC[Si](OCC)(OCC)OCC)(OCC)OCC
• InChI: InChI=1S/C14H34O6Si2/c1-7-15-21(16-8-2,17-9-3)13-14-22(18-10-4,19-11-5)20-12-6/h7-14H2,1-6H3
• InChI Key: IZRJPHXTEXTLHY-UHFFFAOYSA-N
• Boiling Point: 314.956 °C (760 mmHg)
• Melting Point: -30 ºC
• Flash Point: 113 ºC
• Density: 0.958 g/mL
• Appearance: Clolorless liquid
• Application: It can be used as adhesion promoter.Used as additive to silane coupling agent formulations and enhance hydrolytic stability. Used in corrosion resistant coating/primers for steel & aluminum.
• Storage: Ambient temperatures
• Complexity: 208
• Covalently-Bonded Unit Count: 1
• EC Number: 2402122
• Exact Mass: 354.189392g/mol
• Formal Charge: 0
• Hazard Codes: Xi
• Hazard Statements: H315 : Causes skin irritation.; H318 : Causes serious eye damage.
• H-Bond Acceptor: 6
• H-Bond Donor: 0
• Heavy Atom Count: 22
• HS Code: 2931900090
• LogP: 3.08320
• MDL Number: MFCD00239362
• Monoisotopic Mass: 354.189392g/mol
• Packaging: 10 g; 100 g
• Precautionary Statements: P264 : Wash skin thoroughly after handling.; P280 : Wear protective gloves/ eye protection/ face protection.; P302 + P352 : IF ON SKIN: Wash with plenty of water.; P362 + P364 : Take off contaminated clothing and wash it before reuse.; P332 + P313 : If skin irritation °Ccurs: Get medical advice/ attention.; P305 + P351 + P338 + P310 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/d°Ctor.
• PSA: 55.38
• PubChem ID: 253662536
• Refractive Index: 1.411
• RIDADR: UN 2810
• Rotatable Bond Count: 15
• Signal Word: Danger
• Specific Gravity: 0.97
• UNII: F57B935G98
• Vapor Density: 0.000833 mmHg (25 °C)
• Vapor Pressure: 0.000833 mmHg at 25°C

Case Study

Preparation of Composite Microporous Silica Membrane Using 1,2-Bis(Triethoxysilyl)Ethane as Precursor

Hong, Q. I. Chinese Journal of Chemical Engineering, 2011, 19(3), 404-409.

This paper reported a microporous composite silica membrane prepared by an acid-catalyzed polymerization route sol-gel method using tetraethyl orthosilicate (TEOS) and bridged silsesquioxane [1,2-bis(triethoxysilyl)ethane, BTESE] as precursors. The composite silica membrane exhibited molecular sieve properties for small molecule gases such as H2, CO2, O2, N2, CH4 and SF6, and can be used for gas separation.
Preparation of TEOS/BTESE sol and composite silica membranes
· Initially, TEOS and ethanol were mixed and placed in an ice bath to prevent premature hydrolysis. Water and nitric acid were gradually added to the TEOS precursor while stirring vigorously, followed by reflux for 90 minutes at 60 °C. Next, a mixture of BTESE and absolute ethanol was added dropwise to the hydrolyzed TEOS solution. The reflux was continued at 60 °C for another 90 minutes, after which the sol was allowed to cool to room temperature, resulting in a final molar ratio of 1:0.3:5.6:0.085:6.5 (TEOS:BTESE:Ethanol:H2O:HNO3).
· The sol was then diluted sixfold before the final dip-coating step. A composite silica membrane, 150 nm thick and free of defects, was deposited onto a disk-shaped support made of macroporous α-Al2O3 with a mesoporous γ-Al2O3 interlayer through dip coating, followed by calcination in a nitrogen atmosphere.

Improved Thermal Stability of 1,2-Bis(Triethoxysilyl)Ethane Derived Membranes

Yu, Xin, et al. Journal of Materials Chemistry A, 2018, 6(46), 23378-23387.

In contrast to the conventional sintering method at temperatures below 300°C, this work achieved further improvement in thermal stability by sintering 1,2-bis(triethoxysilyl)ethane (BTESE) derived membranes at higher temperatures (550-700°C).
· Preparation of pH-Swing BTESE Sols
BTESE was combined with ethanol, water, and hydrochloric acid in the molar ratios of BTESE/HCl/H2O = 1/0.01/240, adjusting the precursors' weight percentages to 5% using ethanol as a solvent. The BTESE-derived sols were created through a pH-swing method. Initially, BTESE was hydrolyzed and condensed with water and hydrochloric acid at 50 °C for one hour. The pH of the sols was then altered from 2 to 9 by introducing a specific quantity of ammonia and stirring for a few minutes, followed by the addition of hydrochloric acid to bring the pH back to around 2 at 25 °C.
· Comparison of Gas Separation Performance of BTESE-Derived Membranes
Membranes fired at 700 °C displayed a selectivity of up to 100 for H2/CH4, with a hydrogen permeance of approximately 10^-6 mol m-2 s-1 Pa-1. Additionally, BTESE-derived membranes treated at 550 °C in nitrogen and then in air maintained high selectivity values of approximately 100 for H2/CH4 and 2000 for H2/CF4. In contrast, membranes processed at 300 °C exhibited selectivity of about 30 for H2/CH4 and 200 for H2/CF4.

Custom Reviews

August 15, 2023

---

Safety information detail
At the same time, I received the safety information of 1,2-bis(triethoxysilyl)ethane, which provided a basis for the use of safety.

2024-8-21

---

Amazing results with 1,2-Bis(Triethoxysilyl)Ethane!
Used in my research, it greatly enhanced the bonding of my resin to silicatized titanium. The non-functional silane was easy to use and produced excellent results in preparing mesoporous organosilica materials. Highly recommend for scientific research purposes!

Custom Q&A

What is the molecular formula of 1,2-Bis(triethoxysilyl)ethane?

The molecular formula is C14H34O6Si2.

What is the molecular weight of 1,2-Bis(triethoxysilyl)ethane?

The molecular weight is 354.59 g/mol.

What is the IUPAC name of 1,2-Bis(triethoxysilyl)ethane?

The IUPAC name is triethoxy(2-triethoxysilylethyl)silane.

What is the InChI of 1,2-Bis(triethoxysilyl)ethane?

The InChI is InChI=1S/C14H34O6Si2/c1-7-15-21(16-8-2,17-9-3)13-14-22(18-10-4,19-11-5)20-12-6/h7-14H2,1-6H3.

What is the InChIKey of 1,2-Bis(triethoxysilyl)ethane?

The InChIKey is IZRJPHXTEXTLHY-UHFFFAOYSA-N.

What is the canonical SMILES of 1,2-Bis(triethoxysilyl)ethane?

The canonical SMILES is CCO[Si](CC[Si](OCC)(OCC)OCC)(OCC)OCC.

What is the CAS number of 1,2-Bis(triethoxysilyl)ethane?

The CAS number is 16068-37-4.

What is the UNII of 1,2-Bis(triethoxysilyl)ethane?

The UNII is F57B935G98.

How many hydrogen bond donor counts does 1,2-Bis(triethoxysilyl)ethane have?

1,2-Bis(triethoxysilyl)ethane has 0 hydrogen bond donor counts.

Synthetic Use

Upstream Synthesis Route 1

• 64-17-5
• 2504-64-5

• 16068-37-4

Reference: [1] Patent: CN105367597, 2016, A, . Location in patent: Paragraph 0021

Upstream Synthesis Route 2

• 64-17-5
• 2504-64-5
• 692-52-4
• 18038-54-5

• 16068-37-4

Reference: [1] Patent: US2012/123143, 2012, A1, . Location in patent: Page/Page column 3

Upstream Synthesis Route 3

• 87061-56-1

• 16068-37-4

Reference: [1] Patent: US2012/123143, 2012, A1, . Location in patent: Page/Page column 4

Upstream Synthesis Route 4

• 64-17-5
• 2504-64-5

• 16068-37-4

Reference: [1]Patent: CN105367597,2016,A .Location in patent: Paragraph 0021

Upstream Synthesis Route 5

• 998-30-1
• 74-86-2

• 78-08-0
• 16068-37-4

Reference: [1]Journal of Organometallic Chemistry,1980,vol. 195,p. 363 - 374