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447218

Sigma-Aldrich

Trimethyl borate

99.999% (trace metal basis)

Synonym(s):

Boric acid trimethyl ester, Methyl borate

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About This Item

Linear Formula:
B(OCH3)3
CAS Number:
121-43-7
Molecular Weight:
103.91
Beilstein:
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)

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

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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

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PRTR

Class I Designated Chemical Substances

FSL

Group 4: Flammable liquids
Type 1 petroleums
Hazardous rank II
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

447218-BULK:
447218-25ML:
447218-VAR:
447218-4X25ML:
447218-100ML:

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Certificates of Analysis (COA)

Lot/Batch Number
SHBN4854
SHBM4476
SHBL9314
SHBJ5140
SHBD9104V

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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
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