Trimethyl borate
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- $7.62 - $428.65
- Product name: Trimethyl borate
- CAS: 121-43-7
- MF: C3H9BO3
- MW: 103.91
- EINECS:204-468-9
- MDL Number:MFCD00008346
- Synonyms:METHYL BORATE-11B;BORON TRIMETHOXIDE;BORIC ACID TRIMETHYL ESTER;TRIMETHYL BORATE;Borester O;borestero ;Boric acid (H3BO3), trimethyl ester;boricacid(h3bo3),trimethylester
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Brand
- AK Scientific
- Atlantic Research Chemicals
- Chem-Impex
- GFS CHEMICALS
- Oakwood
- Sigma-Aldrich
- Strem Chemicals
- TCI Chemical
- Thermo Scientific Chemicals
- TRC
- Usbiological
Package
- 250mg
- 500mg
- 1g
- 5g
- 10g
- 25mL
- 25g
- 50g
- 4x25ml
- 100g
- 100ML
- 250ML
- 250g
- 500g
- 500ML
- 1000ml
- 1L
- 1000g
- 2l
- 2kg
- 4L
- 100 mL
- 100 g
- 500 g
- 800 mL
- ManufacturerAK Scientific
- Product numberA598
- Product descriptionTrimethyl Borate
- Packaging25mL
- Price$21
- Updated2021-12-16
- Buy
- ManufacturerAtlantic Research Chemicals
- Product numberAN048240
- Product descriptionTrimethyl borate 95
- Packaging50g
- Price$22.86
- Updated2026-05-23
- Buy
- ManufacturerAtlantic Research Chemicals
- Product numberAN048240
- Product descriptionTrimethyl borate 95
- Packaging25g
- Price$17.78
- Updated2026-05-23
- Buy
- ManufacturerAtlantic Research Chemicals
- Product numberAN048240
- Product descriptionTrimethyl borate 95
- Packaging1g
- Price$7.62
- Updated2026-05-23
- Buy
- ManufacturerAtlantic Research Chemicals
- Product numberAN048240
- Product descriptionTrimethyl borate 95
- Packaging5g
- Price$12.7
- Updated2026-05-23
- Buy
- ManufacturerAtlantic Research Chemicals
- Product numberAN048240
- Product descriptionTrimethyl borate 95
- Packaging10g
- Price$15.24
- Updated2026-05-23
- Buy
- ManufacturerAtlantic Research Chemicals
- Product numberAN048240
- Product descriptionTrimethyl borate 95
- Packaging100g
- Price$27.94
- Updated2026-05-23
- Buy
- ManufacturerChem-Impex
- Product number27165
- Product descriptionTrimethyl borate ≥98%(Titration)
- Packaging100ML
- Price$31.45
- Updated2026-05-19
- Buy
- ManufacturerChem-Impex
- Product number27165
- Product descriptionTrimethyl borate ≥98%(Titration)
- Packaging25ML
- Price$18.53
- Updated2026-05-19
- Buy
- ManufacturerChem-Impex
- Product number27165
- Product descriptionTrimethyl borate ≥98%(Titration)
- Packaging250ML
- Price$59.79
- Updated2026-05-19
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- ManufacturerChem-Impex
- Product number27165
- Product descriptionTrimethyl borate ≥98%(Titration)
- Packaging1L
- Price$178.07
- Updated2026-05-19
- Buy
- ManufacturerGFS CHEMICALS
- Product number16432
- Product descriptionTRIMETHYL BORATE, 98%
- Packaging500ML
- Price$126.1
- Updated2026-06-03
- Buy
- ManufacturerOakwood
- Product number044856
- Product descriptionTrimethyl Borate
- Packaging500ml
- Price$40
- Updated2021-12-16
- Buy
- ManufacturerOakwood
- Product number044856
- Product descriptionTrimethyl Borate
- Packaging25ml
- Price$15
- Updated2021-12-16
- Buy
- ManufacturerOakwood
- Product number044856
- Product descriptionTrimethyl Borate
- Packaging4L
- Price$210
- Updated2021-12-16
- Buy
- ManufacturerSigma-Aldrich
- Product number452920
- Product descriptionTrimethyl borate ≥98%
- Packaging2l
- Price$226
- Updated2026-04-30
- Buy
| Manufacturer | Product number | Product description | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|
| AK Scientific | A598 | Trimethyl Borate | 25mL | $21 | 2021-12-16 | Buy |
| Atlantic Research Chemicals | AN048240 | Trimethyl borate 95 | 50g | $22.86 | 2026-05-23 | Buy |
| Atlantic Research Chemicals | AN048240 | Trimethyl borate 95 | 25g | $17.78 | 2026-05-23 | Buy |
| Atlantic Research Chemicals | AN048240 | Trimethyl borate 95 | 1g | $7.62 | 2026-05-23 | Buy |
| Atlantic Research Chemicals | AN048240 | Trimethyl borate 95 | 5g | $12.7 | 2026-05-23 | Buy |
| Atlantic Research Chemicals | AN048240 | Trimethyl borate 95 | 10g | $15.24 | 2026-05-23 | Buy |
| Atlantic Research Chemicals | AN048240 | Trimethyl borate 95 | 100g | $27.94 | 2026-05-23 | Buy |
| Chem-Impex | 27165 | Trimethyl borate ≥98%(Titration) | 100ML | $31.45 | 2026-05-19 | Buy |
| Chem-Impex | 27165 | Trimethyl borate ≥98%(Titration) | 25ML | $18.53 | 2026-05-19 | Buy |
| Chem-Impex | 27165 | Trimethyl borate ≥98%(Titration) | 250ML | $59.79 | 2026-05-19 | Buy |
| Chem-Impex | 27165 | Trimethyl borate ≥98%(Titration) | 1L | $178.07 | 2026-05-19 | Buy |
| GFS CHEMICALS | 16432 | TRIMETHYL BORATE, 98% | 500ML | $126.1 | 2026-06-03 | Buy |
| Oakwood | 044856 | Trimethyl Borate | 500ml | $40 | 2021-12-16 | Buy |
| Oakwood | 044856 | Trimethyl Borate | 25ml | $15 | 2021-12-16 | Buy |
| Oakwood | 044856 | Trimethyl Borate | 4L | $210 | 2021-12-16 | Buy |
| Sigma-Aldrich | 452920 | Trimethyl borate ≥98% | 2l | $226 | 2026-04-30 | Buy |
Properties
Melting point :-34 °C (lit.)
Boiling point :68-69 °C (lit.)
Density :0.932 g/mL at 20 °C (lit.)
vapor density :3.59 (vs air)
vapor pressure :147.9-148 hPa ( 20 °C)
refractive index :n20/D 1.358(lit.)
Flash point :8 °F
storage temp. :Store at <= 20°C.
solubility :Miscible with tetrahydrofuran, ether, isoporpylamine, hexane and methanol.
form :Liquid
color :Colorless
Specific Gravity :0.915
Water Solubility :reacts
Sensitive :Moisture Sensitive
Hydrolytic Sensitivity :7: reacts slowly with moisture/water
Merck :14,9712
BRN :1697939
Dielectric constant :8.2(20℃)
Exposure limits :ACGIH: TWA 200 ppm; STEL 250 ppm (Skin)
OSHA: TWA 200 ppm(260 mg/m3)
NIOSH: IDLH 6000 ppm; TWA 200 ppm(260 mg/m3); STEL 250 ppm(325 mg/m3) Stability :Stable. Incompatible with oxidizing agents. Decomposes slowly in the presence of moisture, rapidly in water. Flammable.
InChI :1S/C3H9BO3/c1-5-4(6-2)7-3/h1-3H3
InChIKey :WRECIMRULFAWHA-UHFFFAOYSA-N
SMILES :COB(OC)OC
CAS DataBase Reference :121-43-7(CAS DataBase Reference)
NIST Chemistry Reference :Boric acid, trimethyl ester(121-43-7)
EPA Substance Registry System :Boric acid (H3BO3), trimethyl ester (121-43-7)
Boiling point :68-69 °C (lit.)
Density :0.932 g/mL at 20 °C (lit.)
vapor density :3.59 (vs air)
vapor pressure :147.9-148 hPa ( 20 °C)
refractive index :n
Flash point :8 °F
storage temp. :Store at <= 20°C.
solubility :Miscible with tetrahydrofuran, ether, isoporpylamine, hexane and methanol.
form :Liquid
color :Colorless
Specific Gravity :0.915
Water Solubility :reacts
Sensitive :Moisture Sensitive
Hydrolytic Sensitivity :7: reacts slowly with moisture/water
Merck :14,9712
BRN :1697939
Dielectric constant :8.2(20℃)
Exposure limits :ACGIH: TWA 200 ppm; STEL 250 ppm (Skin)
OSHA: TWA 200 ppm(260 mg/m3)
NIOSH: IDLH 6000 ppm; TWA 200 ppm(260 mg/m3); STEL 250 ppm(325 mg/m3) Stability :Stable. Incompatible with oxidizing agents. Decomposes slowly in the presence of moisture, rapidly in water. Flammable.
InChI :1S/C3H9BO3/c1-5-4(6-2)7-3/h1-3H3
InChIKey :WRECIMRULFAWHA-UHFFFAOYSA-N
SMILES :COB(OC)OC
CAS DataBase Reference :121-43-7(CAS DataBase Reference)
NIST Chemistry Reference :Boric acid, trimethyl ester(121-43-7)
EPA Substance Registry System :Boric acid (H3BO3), trimethyl ester (121-43-7)
Safety Information
| Symbol(GHS): |
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Description
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 the Suzuki coupling reaction. It is used as neutron detector gas in the presence of a scintillation counter; as a promoter of diborane reactions.More related product prices
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Trimethyl orthoacetate
$10-4153.78 -
Methyl trifluoroacetate
$10-6454.37 -
Tribenuron methyl
$35-1612.96
Suppliers and manufacturers
Hefei TNJ Chemical Industry Co.,Ltd.
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Xiamen AmoyChem Co., Ltd
Trimethyl Borate
CAS:121-43-7






