Skip to Content
MilliporeSigma
All Photos(2)

Documents

447218

Sigma-Aldrich

Trimethyl borate

99.999% (trace metal basis)

Synonym(s):

Boric acid trimethyl ester, Methyl borate

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Linear Formula:
B(OCH3)3
CAS Number:
121-43-7
Molecular Weight:
103.91
Beilstein/REAXYS Number:
1697939
EC Number:
204-468-9
MDL number:
MFCD00008346
UNSPSC Code:
12352103
PubChem Substance ID:
24868324
NACRES:
NA.22

vapor density

3.59 (vs air)

Quality Level

100

assay

99.999% (trace metal basis)

refractive index

n20/D 1.346 (lit.)

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

Looking for similar products? Visit Product Comparison Guide

Related Categories

Packaging

The 25 mL Sure/Seal™ bottle is recommended as a single-use bottle. Repeated punctures will likely result in decreased performance of product.

Legal Information

Sure/Seal is a trademark of Sigma-Aldrich Co. LLC

signalword

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

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

12.2 °F - (own results)

flash_point_c

-11 °C - (own results)

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Slide 1 of 3

1 of 3

Trimethyl phosphite ≥99%

Sigma-Aldrich

240907

Trimethyl phosphite

Tetraethyl orthosilicate 99.999% trace metals basis

Sigma-Aldrich

333859

Tetraethyl orthosilicate

Boric acid BioReagent, for molecular biology, suitable for cell culture, suitable for plant cell culture, ≥99.5%

Sigma-Aldrich

B6768

Boric acid

A Colorado et al.
Journal of mass spectrometry : JMS, 31(4), 403-410 (1996-04-01)
Barbiturates are a class of drugs that are utilized as anesthetics and sleeping agents and are used for the treatment of anxiety, epilepsy and other psychiatric disorders. Because of their pyrimidine structures, barbiturates are highly basic compounds. The evaluation of
Steven C Habicht et al.
Analytical chemistry, 80(9), 3416-3421 (2008-03-28)
A mass spectrometric method has been developed for the identification of the carboxylic acid functional group in analytes evaporated and ionized by electrospray ionization (ESI). This method is based on gas-phase ion-molecule reactions of ammoniated ([M + NH4]+) and sodiated
Scott Gronert et al.
Journal of the American Society for Mass Spectrometry, 13(9), 1088-1098 (2002-09-27)
Using a quadrupole ion trap mass spectrometer, trimethyl borate was allowed to react with dihydrogen phosphate, deprotonated O-phosphoserine, and a set of hydrogen bonded complexes involving dihydrogen phosphate and neutral acids (phosphoric acid, acetic acid, serine, and O-phosphoserine). The reactions
Jayalakshmi Somuramasami et al.
Journal of the American Society for Mass Spectrometry, 22(6), 1040-1051 (2011-09-29)
Several lignin model compounds were examined to test whether gas-phase ion-molecule reactions of trimethylborate (TMB) in a FTICR can be used to differentiate the ortho-, meta-, and para-isomers of protonated aromatic compounds, such as those formed during degradation of lignin.
Ryan J Eismin et al.
Journal of the American Society for Mass Spectrometry, 23(1), 12-22 (2011-10-18)
A mass spectrometric method has been delineated for the identification of the epoxide functionalities in unknown monofunctional analytes. This method utilizes gas-phase ion/molecule reactions of protonated analytes with neutral trimethyl borate (TMB) followed by collision-activated dissociation (CAD) in an ion
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service