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Key Documents

92330

Sigma-Aldrich

Trimethyl borate

purum, ≥99.0% (GC)

Synonym(s):

Boric acid trimethyl ester, Methyl borate

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About This Item

Linear Formula:
B(OCH3)3
CAS Number:
Molecular Weight:
103.91
Beilstein:
1697939
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.22

vapor density

3.59 (vs air)

Quality Level

grade

purum

Assay

≥99.0% (GC)

form

liquid

refractive index

n20/D 1.346 (lit.)
n20/D 1.358

bp

68-69 °C (lit.)

mp

−34 °C (lit.)

density

0.932 g/mL at 20 °C (lit.)

SMILES string

COB(OC)OC

InChI

1S/C3H9BO3/c1-5-4(6-2)7-3/h1-3H3

InChI key

WRECIMRULFAWHA-UHFFFAOYSA-N

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Application

Trimethyl borate (TMB) can be used:
  • For the synthesis of luminogens having triphenylamine core and tetraphenylethene peripheral moieties.
  • For the synthesis of ammonia borane and trialkylamine boranes.
  • In the reduction of carboxylic acids in the presence of borane-methyl sulfide.
  • As a reagent to crosslink phopshate complexes.
  • As a source of boron to synthesize boron nitride nanotubes by chemical vapor deposition (CVD) method.

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Irrit. 2 - Flam. Liq. 2 - Repr. 1B - STOT SE 1

Target Organs

Eyes

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

12.2 °F - (own results)

Flash Point(C)

-11 °C - (own results)

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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