Tris(trimethylsilyl) Borate(TMSB) - ≥98%(GC) , CAS No.4325-85-3

CAS: 4325-85-3 Cat. No.: T162882 Molecular Weight: 278.38 EC Number: 629-367-0

GRADE & PURITY ≥98%(GC)

Synonyms

Tris(trimethylsiloxy)boron | Tris(trimethylsiloxy)borane | Boric acid tris(trimethylsilyl) ester

Storage

Room temperature,Argon charged

Shipped In

Normal

Specifications

Synonyms

Tris(trimethylsiloxy)boron | Tris(trimethylsiloxy)borane | Boric acid tris(trimethylsilyl) ester

Specifications & Purity

≥98%(GC)

Storage

Room temperature, Argon charged

Shipped In

Normal

Purity

≥98%(GC)

Names and Identifiers

• Pubchem Sid: 488185497
• Pubchem Sid Url: https://pubchem.ncbi.nlm.nih.gov/substance/488185497
• Canonical Smiles: B(O[Si](C)(C)C)(O[Si](C)(C)C)O[Si](C)(C)C
• IUPAC Name: tris(trimethylsilyl) borate
• InChIKey: YZYKZHPNRDIPFA-UHFFFAOYSA-N
• INCHI: 1S/C9H27BO3Si3/c1-14(2,3)11-10(12-15(4,5)6)13-16(7,8)9/h1-9H3
• Isomeric SMILES: B(O[Si](C)(C)C)(O[Si](C)(C)C)O[Si](C)(C)C
• WGK Germany: 3
• UN Number: 1993
• Packing Group: III
• Molecular Weight: 278.38
• Reaxy-Rn: 1772733

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organometallic compounds
    • Class Organometalloid compounds
      • Subclass Organosilicon compounds
        • Level5 Organoheterosilanes
          • Level6 Trialkylheterosilanes

• Kingdom: Organic compounds
• Superclass: Organometallic compounds
• Class: Organometalloid compounds
• Subclass: Organosilicon compounds
• Intermediate Tree Nodes: Organoheterosilanes
• Direct Parent: Trialkylheterosilanes
• Alternative Parents: Organic metalloid salts Organic oxoanionic compounds Hydrocarbon derivatives
• Molecular Framework: Aliphatic acyclic compounds
• Substituents: Trialkylheterosilane - Organic borate - Organic metalloid salt - Organic oxygen compound - Hydrocarbon derivative - Organic salt - Aliphatic acyclic compound
• Description: This compound belongs to the class of organic compounds known as trialkylheterosilanes. These are organoheterosilanes, bearing a silicon atom linked to three alkyl groups and one heteroatom.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Sensitivity: Moisture sensitive.
• Refractive Index: 1.3861
• Flash Point(°F): 105.8 °F
• Flash Point(°C): 42℃
• Boil Point(°C): 183-185℃
• Melt Point(°C): -35℃
• Molecular Weight: 278.380 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 6
• Exact Mass: 278.136 Da
• Monoisotopic Mass: 278.136 Da
• Topological Polar Surface Area: 27.700 Ų
• Heavy Atom Count: 16
• Formal Charge: 0
• Complexity: 179.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

XLogP3

References

1. Liang Li, Tao Yang, Kaixiang Ren, Xinchun Song, Shilin Wu, Hai-Wen Li, Zhipeng Jiang, Mengjun Sun, Yongtao Li.  (2025)  Silyl additives-driven synergistic inhibition engineering enables 4.9 V LiNi0.5Mn1.5O4 batteries beyond 300 Wh kg−1.  Materials Today,      [PMID:] [10.1016/j.mattod.2025.09.022]