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121-43-7 - Trimethyl borate, 99% - Boric acid trimethyl ester - Methyl borate - B20215 - Alfa Aesar

B20215 Trimethyl borate, 99%

CAS Number
121-43-7
Synonyms
Boric acid trimethyl ester
Methyl borate

Size Price ($) Quantity Availability
250ml 22.80
1000ml 72.90
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Trimethyl borate, 99%

MDL
MFCD00008346
EINECS
204-468-9

Chemical Properties

Formula
C3H9BO3
Formula Weight
103.92
Melting point
-34°
Boiling Point
67-69°
Flash Point
-8°(17°F)
Density
0.915
Refractive Index
1.3610
Sensitivity
Moisture Sensitive
Solubility
Miscible with tetrahydrofuran, ether, isoporpylamine, hexane and methanol.

Applications

Trimethyl borate is a useful reagent in organic synthesis. It is involved in the production of resins, waxes and paints and acts as a methylation agent. As a boron source, it is used to prepare flame retardants, anti-oxidants and corrosion inhibitors. It reacts with Grignard reagents followed by hydrolysis to prepare boronic acid. It is also used as a precursor of borate esters, which finds application in Suzuki coupling reaction. It is an intermediate in the preparation of sodium borohydride.

Notes

Moisture sensitive. Keep container tightly closed in a dry and well-ventilated place. Incompatible with oxidizing agents. It decomposes slowly in the presence of moisture and rapidly in water.

Literature References

For an example of the low temperature reaction with Grignard reagents to give boronic acids., see: Org. Synth. Coll., 4, 68 (1963).

Bao, Z.; Zhang, W.; Cui, X.; Xu, J. Design, Optimization and Control of Extractive Distillation for the Separation of Trimethyl Borate-Methanol. Ind. Eng. Chem. Res. 2014, 53 (38), 14802-14814.

Chang, C. C.; Lee, K. Y.; Lee, H. Y.; Su, Y. H.; Her, L. J. Trimethyl borate and triphenyl borate as electrolyte additives for LiFePO4 cathode with enhanced high temperature performance. J. Power Sources 2012, 217, 524-529.

GHS Hazard and Precautionary Statements

Hazard Statements: H225-H312

Highly flammable liquid and vapour. Harmful in contact with skin.

Precautionary Statements: P210-P280-P240-P241-P303+P361+P353-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Wear protective gloves/protective clothing/eye protection/face protection. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Merck
14,9712
Beilstein
1697939
Hazard Class
3
Packing Group
II
Harmonized Tariff Code
2920.90
TSCA
Yes
RTECS
ED5600000

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