Tri-sec-butylborane

CAS Number
1113-78-6
EC Number
214-209-1

What is Tri-sec-butylborane?

Tri-sec-butylborane (CAS 1113-78-6) is a trialkylborane compound used as a radical initiator and catalyst precursor in controlled polymerization and synthetic chemistry.

Where is Tri-sec-butylborane used?

  • Polymer chemistry: initiates radical polymerization of acrylates, methacrylates, and vinyl monomers
  • Specialty plastics and adhesive systems
  • Pharmaceutical synthesis: boron-based reagent for hydroboration and stereoselective carbon–carbon bond-forming reactions
  • Active pharmaceutical ingredient manufacturing and biotechnology research
  • Functional polymers for drug delivery scaffolds and surface modification
  • Catalyst precursor in transition-metal-catalyzed processes requiring controlled generation of reactive intermediates
  • It generates carbon-centered radicals under mild conditions.

Good to know: Handled and packaged under inert atmosphere due to air sensitivity. Specifications confirmed by titration or NMR assay.

Commercial specifications

  • Solvents: tetrahydrofuran or hexane at defined molar concentrations
  • Supply quantities from laboratory-scale to bulk

Other Names (Synonyms)

Borane, tris(1-methylpropyl)-|Tris(1-methylpropyl)borane|Tri(butan-2-yl)borane

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What are the physical properties of Tri-sec-butylborane?

Boiling Point 80-81 °C @ Press: 12 Torr
Density 0.799 g/mL at 25 °C
Flash Point 1 °F

How is Tri-sec-butylborane classified and handled safely? Learn More

Danger
GHS02· Flammable GHS05· Corrosive

Which trade and regulatory codes apply to Tri-sec-butylborane?

HS Code 29319090
UN Number 1993
ADR Class 3
Packing Group II
WGK (Germany) 1
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