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Tris(trimethylsilyl) borate

CAS No.4325-85-3
Chemical Name:Tris(trimethylsilyl) borate
CBNumber:CB3733453
Molecular Formula:C9H27BO3Si3
Formula Weight:278.38
MOL File:4325-85-3.mol

Tris(trimethylsilyl) borate Property

Melting point -35°C
Boiling point 186 °C (lit.)
Density 0.831 g/mL at 25 °C (lit.)
refractive index n20/D 1.386(lit.)
Flash point 109 °F
storage temp. Inert atmosphere,2-8°C
form Liquid
Specific Gravity 0.828
color Clear colorless
Hydrolytic Sensitivity 7: reacts slowly with moisture/water
Sensitive Moisture Sensitive
BRN 1772733
InChI InChI=1S/C9H27BO3Si3/c1-14(2,3)11-10(12-15(4,5)6)13-16(7,8)9/h1-9H3
InChIKey YZYKZHPNRDIPFA-UHFFFAOYSA-N
SMILES [Si](C)(C)(C)OB(O[Si](C)(C)C)O[Si](C)(C)C
CAS DataBase Reference 4325-85-3
EPA Substance Registry System Silanol, trimethyl-, triester with boric acid (H3BO3) (4325-85-3)
UNSPSC Code 12352103
NACRES NA.22

Safety

Hazard Codes :Xi
Risk Statements :10-36/37/38
Safety Statements :26-36
RIDADR :UN 1993 3/PG 3
WGK Germany :3
F :10-21
TSCA :Yes
HazardClass :3
PackingGroup :III
HS Code :29319090

NFPA 704:

	2
2		1

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordWarning
Hazard statements H226-H315-H319-H335
Precautionary statements P210-P302+P352-P305+P351+P338

Tris(trimethylsilyl) borate Price More Price(4)

Brand: Sigma-Aldrich(India)
Product number: 348635
Product name : Tris(trimethylsilyl) borate
Purity: 99%
Packaging: 25G
Price: ₹10088.9
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 348635
Product name : Tris(trimethylsilyl) borate
Purity: 99%
Packaging: 100G
Price: ₹23836.65
Updated: 2022/06/14
Buy: Buy

Brand: TCI Chemicals (India)
Product number: T2543
Product name : Tris(trimethylsilyl) Borate
Purity:
Packaging: 25G
Price: ₹5300
Updated: 2022/05/26
Buy: Buy

Brand: TCI Chemicals (India)
Product number: T2543
Product name : Tris(trimethylsilyl) Borate
Purity:
Packaging: 100G
Price: ₹16600
Updated: 2022/05/26
Buy: Buy

Tris(trimethylsilyl) borate Chemical Properties,Usage,Production

Chemical Properties Clear colorless liquid
Uses Tris(trimethylsilyl) borate is used as intermediate of organic synthesis and additive of lithium battery electrolyte.
Properties and Applications Tris (trimethylsilyl) borate (TMSB) has been investigated as a protective cathode additive for increasing the cycle performance of several high-voltage cathode materials, including LiMn2O4 (4.5 V), LiNi_0.5Co_0.2Mn_0.3O₂ (4.4 V), LiNi_0.5Mn_1.5O₄ (4.9 V) and layered lithium-rich oxide cathode Li[Li_0.2Mn_0.54Ni_0.13Co_0.13]O₂ (4.8 V). TMSB can also be applied as an effective electrolyte additive to raise the cycle life of LiMn2O4 and LiFePO4 cathode Li-ion batteries at 55 °C. Compared with tris(trimethylsilyl)phosphate (TMSP), the CEI film generated from TMSB, which contains B and Si-rich compounds, shows a better ability to restrain the growth of interfacial resistance during cycling. The results reveal that the TMSB additive is easy to complex with Li⁺ ions, thus weakening the intermolecular force between Li+ ions and ethylene carbonate solvent, which is beneficial for the cycle performance. Besides, the changed Li+ solvation structure results in a thin and dense CEI film containing compounds with Si–O and B–O bonds, which favors the transfer of Li+ ions[1–2].
References [1] Yan Chunfeng . “Tris(trimethylsilyl) borate as an electrolyte additive for high-voltage lithium-ion batteries using LiNi1/3Mn1/3Co1/3O2 cathode.” Journal of Energy Chemistry 25 4 (2016): Pages 659-666.
[2] Jie Wang . “Adjusting the solvation structure with tris(trimethylsilyl)borate additive to improve the performance of LNCM half cells.”Journal of Energy Chemistry 67 (2022): Pages 55-64.