Trimethyl borate

Trimethyl borate
Identifiers
CAS number	121-43-7 Y
PubChem	8470
ChemSpider	8157 Y
EC number	204-468-9
ChEBI	CHEBI:38913 Y
Jmol-3D images	Image 1
SMILES O(B(OC)OC)C
InChI InChI=1S/C3H9BO3/c1-5-4(6-2)7-3/h1-3H3 Y Key: WRECIMRULFAWHA-UHFFFAOYSA-N Y InChI=1/C3H9BO3/c1-5-4(6-2)7-3/h1-3H3 Key: WRECIMRULFAWHA-UHFFFAOYAY
Properties
Molecular formula	C3H9BO3
Molar mass	103.91 g mol−1
Appearance	clear liquid
Density	0.932 g/ml
Melting point	−34
Boiling point	68-69 °C, 341-342 K, 154-156 °F
Solubility in water	decomposes
Y borate (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Trimethyl borate, or boron trimethoxide, has formula B(OCH₃)₃. It is a clear liquid. It melts at −34 °C and boils at 68-69 °C. It decomposes in contact with water. It is flammable and burns with a green flame.

Green fire of boric acid in methanol

It is primarily used as a precursor to boronic esters and boronic acids for Suzuki couplings. Other uses include :

1. Anti-oxidant in Brazing and Solder Flux
2. Wood preservative
3. Catalyst of olefin polymerisation
4. raw material in the production of borophosphosilicate glass film by chemical vapor deposition
5. raw material in the production of specialty glasses using sol-gel technology
6. solvent or catalyst for resins, waxes, paints, and varnishes
7. component of some flame retardants in textile industry
8. component of some welding fluxes
9. in green fire compositions for special effects (as a solution of boric acid in methanol, where it forms in small amounts)^[1]

References

1. ^ Ghost Mines: How to Make Colored Liquid Flames and Fireballs

External links

• National Pollutant Inventory - Boron and compounds
• MSDS for Trimethyl Borate
• WebBook page for BC₃H₉O₃