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Tris(trimethylsilyl) borate

Tris(trimethylsilyl) borate Structure
Tris(trimethylsilyl) borate structure
CAS No.
4325-85-3
Chemical Name:
Tris(trimethylsilyl) borate
Synonyms
TMSB;Tris(trimethylsiloxy)boron, min. 97%;BORON TRIMETHYLSILOXIDE;TRIS(TRIMETHYSILOXY)BORON;TRIS(TRIMETHYLSILOXY)BORON;TRIS(TRIMETHYLSILYL) BORATE;Borane, tris(trimethylsiloxy)-;Tris(trimethylsiloxy)boron ,96%;TRIS(TRIMETHYLSILOXY)BORON 97+%;TRIS(TRIMETHYLSILYL) BORATE 99%
CBNumber:
CB3733453
Molecular Formula:
C9H27BO3Si3
Molecular Weight:
278.38
MDL Number:
MFCD00051588
MOL File:
4325-85-3.mol
MSDS File:
SDS
Last updated:2026-03-27 18:42:00
Product description Number Pack Size Price
Tris(trimethylsilyl) borate 99% 348635 25g $119
Tris(trimethylsilyl) borate 99% 348635 100g $120
Tris(trimethylsilyl) Borate >97.0%(T) T2543 25g $108
Tris(trimethylsilyl) Borate >97.0%(T) T2543 100g $324
Tris(trimethylsiloxy)borate, min. 97% 05-2000 10g $41
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Tris(trimethylsilyl) borate Properties

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
color Clear colorless
Specific Gravity 0.828
Sensitive Moisture Sensitive
Hydrolytic Sensitivity 7: reacts slowly with moisture/water
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

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictograms
GHS02,GHS07
Signal word  Warning
Hazard statements  H226-H315-H319-H335
Precautionary statements  P210-P302+P352-P305+P351+P338
target organs Respiratory system
PPE Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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  TSCA listed
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
Limited Quantities 5.0 L (1.3 gallons) (liquid)
Excepted Quantities Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)
NFPA 704
2
2 1

Tris(trimethylsilyl) borate price More Price(11)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 348635 Tris(trimethylsilyl) borate 99% 4325-85-3 25g $119 2026-04-30 Buy
Sigma-Aldrich 348635 Tris(trimethylsilyl) borate 99% 4325-85-3 100g $120 2026-04-30 Buy
TCI Chemical T2543 Tris(trimethylsilyl) Borate >97.0%(T) 4325-85-3 25g $108 2026-04-30 Buy
TCI Chemical T2543 Tris(trimethylsilyl) Borate >97.0%(T) 4325-85-3 100g $324 2026-04-30 Buy
Strem Chemicals 05-2000 Tris(trimethylsiloxy)borate, min. 97% 4325-85-3 10g $41 2022-04-27 Buy
Product number Packaging Price Buy
348635 25g $119 Buy
348635 100g $120 Buy
T2543 25g $108 Buy
T2543 100g $324 Buy
05-2000 10g $41 Buy

Tris(trimethylsilyl) borate Chemical Properties,Uses,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), 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.

Tris(trimethylsilyl) borate Preparation Products And Raw materials

Raw materials

Preparation Products

2-Pyridineboronic acid 3-Quinolineboronic acid 6-METHYLPYRIDINE-2-BORONIC ACID Bis(trimethylsilyl)sulfate

Tris(trimethylsilyl) borate Suppliers

Global( 272)Suppliers
Supplier Tel Email Country ProdList Advantage
Anhuyan (Hainan) Biotechnology Co., LTD
+8618163349544 mollylucking@foxmail.com China 3000 58
Hebei Chuanghai Biotechnology Co., Ltd 		+8615531151365 mina@chuanghaibio.com China 18126 58
Capot Chemical Co.,Ltd. 		+86-（0）57185586718; +8613336195806 sales@capot.com China 29640 60
Shanghai Daken Advanced Materials Co.,Ltd 		+86-2158073036 info@dakenam.com China 13902 58
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21588 55
Hangzhou FandaChem Co.,Ltd. 		008657128800458; +8615858145714 FandaChem@Gmail.com China 1399 55
Hefei TNJ Chemical Industry Co.,Ltd. 		+86-0551-65418679 +8618949832763 info@tnjchem.com China 2988 55
Jinan Finer Chemical Co., Ltd 		+86-531-88989536 +86-15508631887 sales@finerchem.com China 2949 58
CONIER CHEM AND PHARMA LIMITED 		+8618523575427 sales@conier.com China 49955 58
career henan chemical co 		+86-0371-86658258 +8613203830695 factory@coreychem.com China 29794 58
Supplier Advantage
Anhuyan (Hainan) Biotechnology Co., LTD
58
Hebei Chuanghai Biotechnology Co., Ltd 		58
Capot Chemical Co.,Ltd. 		60
Shanghai Daken Advanced Materials Co.,Ltd 		58
Henan Tianfu Chemical Co.,Ltd. 		55
Hangzhou FandaChem Co.,Ltd. 		55
Hefei TNJ Chemical Industry Co.,Ltd. 		55
Jinan Finer Chemical Co., Ltd 		58
CONIER CHEM AND PHARMA LIMITED 		58
career henan chemical co 		58

View Lastest Price from Tris(trimethylsilyl) borate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Tris(trimethylsilyl) borate pictures 2026-05-21 Tris(trimethylsilyl) borate
4325-85-3
 US $12.00 / KG 1KG 99% 200mt/year Jinan Finer Chemical Co., Ltd
Tris(trimethylsilyl) borate pictures 2026-05-19 Tris(trimethylsilyl) borate
4325-85-3
 US $5.00 / kg 0.001kg 99% 10000 Anhuyan (Hainan) Biotechnology Co., LTD
Tris(trimethylsilyl) borate pictures 2026-05-19 Tris(trimethylsilyl) borate
4325-85-3
 US $0.00 / KG 1KG 98%min 30tons/month WUHAN FORTUNA CHEMICAL CO., LTD

Tris(trimethylsilyl) borate Spectrum

Tris(trimethylsilyl) borate(4325-85-3)1HNMRTris(trimethylsilyl) borate(4325-85-3)IRTris(trimethylsilyl) borate(4325-85-3)Raman

4325-85-3(Tris(trimethylsilyl) borate)Related Search:

TRIS(TRIMETHYLSILYL)PHOSPHITE Tris(trimethylsilyl)phosphate Trimethyl borate Lurasidone hydrochloride Vinyl chloroacetate
Tributyl citrate Azoxystrobin Dacthal 2-Chloroethyl chloroformate Methyl 2-bromobenzoate
Trimethoxypropylsilane Dimethyl carbonate Vinylene carbonate 1,5,2,4-Dioxadithiane 2,2,4,4-tetraoxide Chloroethylene carbonate
Butyl 2-chloroacetate Trimellitic Anhydride Propylene carbonate

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Boric acid tris(trimethylsilyl) ester~Tris(trimethylsiloxy)boron TRIS(TRIMETHYLSILYL) BORATE 99% TRIS(TRIMETHYLSILOXY)BORON 97+% trimethyl-silanotriesterwithboricacid(h3bo3) Tris(trimethylsiloxy)boron, min. 97% Tris(trimethylsiloxy)boron ,96% Tris(trimethylsilyl)borate(Tris(trimethylsiloxy)boron) Tris(trimethylsiloxy)boron,min.97% Tris(triMethylsilyl) borate 25GR TRIS(TRIMETHYLSILOXY)BORON TMSB Tris(triMethylsilyl) borate (TMSB) Tris(triMethylsilyl) borate, 98%+ BORON TRIMETHYLSILOXIDE TRIS(TRIMETHYLSILYL) BORATE TRIS(TRIMETHYLSILOXY)BORON Borane, tris(trimethylsiloxy)- boricacidtris-(trimethylsilyl)ester Silanol, trimethyl-, borate (3:1) Silanol, trimethyl-, triester with boric acid (H3BO3) Silanol,trimethyl-,triesterwithboricacid(H3BO3) Tris(trimethylsiloxy)borate, min. 97% Silanol,1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) Battery electrolyte additive TMSB Tris(trimethylsilyl) Borate > Tri (trimethylsilane) boronate ester trimethyl-silanotriesterwithboricacid TRIS(TRIMETHYSILOXY)BORON boronic acidtri(trimethylsiliconalkaneyl)ester Tris(trimethysiloxy)boron(TMSB) TMSB 4325-85-3 C9H27BO3Si3 CH33SiO3B Organometallic Reagents Organoborates Boronic Acids and Derivatives borate ester Boronic Acids and Derivatives Organoborates Organometallic Reagents B (Classes of Boron Compounds) Boric Acid Esters Boric Acid Triesters