ChemicalBook--->CAS DataBase List--->4325-85-3

4325-85-3

4325-85-3 Structure

4325-85-3 Structure
IdentificationBack Directory
[Name]

TRIS(TRIMETHYLSILOXY)BORON
[CAS]

4325-85-3
[Synonyms]

TMSB
BORON TRIMETHYLSILOXIDE
TRIS(TRIMETHYLSILOXY)BORON
TRIS(TRIMETHYLSILYL) BORATE
Borane, tris(trimethylsiloxy)-
TRIS(TRIMETHYLSILYL) BORATE 99%
TRIS(TRIMETHYLSILOXY)BORON 97+%
Tris(trimethylsiloxy)boron ,96%
TRIS(TRIMETHYLSILOXY)BORON TMSB
Tris(triMethylsilyl) borate 25GR
Silanol, trimethyl-, borate (3:1)
Tris(triMethylsilyl) borate, 98%+
Tris(triMethylsilyl) borate (TMSB)
Tris(trimethylsiloxy)boron,min.97%
boricacidtris-(trimethylsilyl)ester
Tris(trimethylsiloxy)boron, min. 97%
Tris(trimethylsiloxy)borate, min. 97%
trimethyl-silanotriesterwithboricacid(h3bo3)
Silanol,trimethyl-,triesterwithboricacid(H3BO3)
Silanol, trimethyl-, triester with boric acid (H3BO3)
Tris(trimethylsilyl)borate(Tris(trimethylsiloxy)boron)
Boric acid tris(trimethylsilyl) ester~Tris(trimethylsiloxy)boron
[EINECS(EC#)]

-0
[Molecular Formula]

C9H27BO3Si3
[MDL Number]

MFCD00051588
[MOL File]

4325-85-3.mol
[Molecular Weight]

278.38
Chemical PropertiesBack Directory
[Appearance]

Clear colorless liquid
[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.)
[Fp ]

109 °F
[storage temp. ]

Flammables area
[form ]

Liquid
[color ]

Clear colorless
[Specific Gravity]

0.828
[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)
Hazard InformationBack Directory
[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), LiNi0.5Co0.2Mn0.3O2 (4.4 V), LiNi0.5Mn1.5O4 (4.9 V) and layered lithium-rich oxide cathode Li[Li0.2Mn0.54Ni0.13Co0.13]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.
Safety DataBack Directory
[Symbol(GHS) ]

Flame (GHS02)Exclamation Mark (GHS07)
GHS02,GHS07
[Signal word ]

Warning
[Hazard statements ]

H226-H315-H319-H335
[Precautionary statements ]

P210-P302+P352-P305+P351+P338
[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
[Storage Class]

3 - Flammable liquids
[Hazard Classifications]

Eye Irrit. 2
Flam. Liq. 3
Skin Irrit. 2
STOT SE 3
Raw materials And Preparation ProductsBack Directory
[Preparation Products]

2-Pyridineboronic acid-->6-METHYLPYRIDINE-2-BORONIC ACID-->3-Quinolineboronic acid-->Bis(trimethylsilyl)sulfate
Spectrum DetailBack Directory
[Spectrum Detail]

Tris(trimethylsilyl) borate(4325-85-3)1HNMR
Tris(trimethylsilyl) borate(4325-85-3)IR
Tris(trimethylsilyl) borate(4325-85-3)Raman
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