Triethyl borate

Synonym(s):Boric acid triethyl ester;Boron ethoxide;Triethoxyborane

CAS NO.：150-46-9
Empirical Formula: C6H15BO3
Molecular Weight: 145.99
MDL number: MFCD00009073
EINECS: 205-760-9
SAFETY DATA SHEET (SDS)
Update Date: 2023-12-24 16:54:11

What is Triethyl borate?

Chemical properties

Triethyl borate is a Colorless liquid; mild odor. Hydrolyzes rapidly depositing boric acid in finely divided crystalline form.

The Uses of Triethyl borate

Antiseptics, disinfectants, antiknock agent.
Triethyl borate is used as a solvent in resins, paints, varnishes, adhesives and sealant chemicals. It is used as a catalyst of synthetic waxes and resins. It is an active component of flame retardants in the textile industry and in welding fluxes. It is used to prepare m-tolyl-acetic acid ethyl ester by reacting with 1-bromomethyl-3-methyl-benzene and carbon monoxide using as 1,5-hexadiene dium chloride as a catalyst. Further, it is used in pyrotechnics.
Triethyl borate may be used as boron source to synthesize lithium borophosphates, alumina borosilicate ceramic nanofibres and boron-doped single wall carbon nanotubes.CVD precursor for boron modified SiO2 in microelectronics Intermediate for organic-modified borosiloxanes.

The Uses of Triethyl borate

Triethyl borate is used as a solvent in resins, paints, varnishes, adhesives and sealant chemicals. It is used as a catalyst of synthetic waxes and resins. It is an active component of flame retardants in the textile industry and in welding fluxes. It is used to prepare m-tolyl-acetic acid ethyl ester by reacting with 1-bromomethyl-3-methyl-benzene and carbon monoxide using as1,5-hexadiene?dium chloride as a catalyst. Further, it is used in pyrotechnics.

Definition

ChEBI: A member of the class of borate esters obtained by the formal condensation of three equivalents of ethanol with boric acid.

Preparation

Triethyl borate can be prepared by adding anhydrous ethanol with boric acid or boron trioxide. Can be purified via distillation.

Hazard

Flammable, dangerous fire risk.

Safety Profile

Moderately toxic by ingestion. Aneye irritant. A very dangerous fire hazard when exposed toheat or flame. When heated to decomposition it emitsacrid smoke and irritating fumes.

Purification Methods

Dry it over sodium, then distil it. Also fractionate it through a gauze packed column. [Charnlet et al. J Chem Soc 2288 1952, as for tributyl borate Johnson & Tompkins Org Synth Coll Vol II 106 1943, Beilstein 1 III 1339, 1 IV 1365.]

Properties of Triethyl borate

Melting point:	-84.5 °C
Boiling point:	117-118 °C(lit.)
Density	0.858 g/mL at 25 °C(lit.)
vapor density	5.04 (vs air)
refractive index	n20/D 1.374(lit.)
Flash point:	52 °F
storage temp.	0-6°C
solubility	Miscible with alcohol and ether.
form	Liquid
Specific Gravity	0.864
color	Colorless
Water Solubility	decomposes
Sensitive	Moisture Sensitive
Hydrolytic Sensitivity	7: reacts slowly with moisture/water
BRN	1699052
CAS DataBase Reference	150-46-9(CAS DataBase Reference)
NIST Chemistry Reference	Boric acid, triethyl ester(150-46-9)
EPA Substance Registry System	Boric acid (H3BO3), triethyl ester (150-46-9)

Safety information for Triethyl borate

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H225:Flammable liquids H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.