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B20215 Trimethyl borate, 99%

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

Stock No. Size Price ($) Quantity Availability
B20215-AK 250ml 24.00
B20215-AU 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
Storage & Sensitivity
Moisture Sensitive. Ambient temperatures.
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-H370

Highly flammable liquid and vapour. Harmful in contact with skin. Causes damage to organs.

Precautionary Statements: P210-P233-P240-P243-P260-P264b-P270-P280-P302+P352-P312-P314-P362-P372-P374-P380-P501c

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep container tightly closed. Ground/bond container and receiving equipment. Take precautionary measures against static discharge. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. Call a POISON CENTER or doctor/physician if you feel unwell. Get medical advice/attention if you feel unwell. Take off contaminated clothing and wash before reuse. Explosion risk in case of fire. Fight fire with normal precautions from a reasonable distance. Evacuate area. Dispose of contents/ container to an approved waste disposal plant

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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