Triethyl borate supplier | CasNO.150-46-9

Name
Triethyl borate
EINECS 205-760-9
CAS No. 150-46-9
Article Data129
CAS DataBase
Density 0.865 g/cm³
Solubility decomposes in water
Melting Point -84.5 °C
Formula C₆H₁₅BO₃
Boiling Point 120 °C at 760 mmHg
Molecular Weight 145.994
Flash Point 11.1 °C
Transport Information UN 1176 3/PG 2
Appearance clear colourless liquid
Safety 7-16-23-9-33
Risk Codes 11
Molecular Structure
Hazard Symbols F
Synonyms Ethylborate ((EtO)3B) (6CI);Boron ethoxide;Boron ethoxide (B(OEt)3);Borontriethoxide;NSC 2055;Triethoxyborane;Triethoxyboron;
PSA 27.69000
LogP 1.08080

Synthetic route

: bis(3,5-dimethyl-4-methoxyphenyl)phosphane-borane(1:1)

: 64-17-5
ethanol

A: 150-46-9
triethyl borate

B: 122708-97-8
bis(4-methoxy-3,5-dimethylphenyl)-phosphine

Conditions

Conditions	Yield
Inert atmosphere; Reflux;	A n/a B 73%

...Expand

: 1825-62-3
ethyl trimethylsilyl ether

: 369-57-3
benzenediazonium tetrafluoroborate

A: 150-46-9
triethyl borate

B: 420-56-4
trimethylsilyl fluoride

C: 103-73-1
Phenetole

Conditions

Conditions	Yield
In 1,1,2-Trichloro-1,2,2-trifluoroethane 1.) 0 to 55 deg C very slowly, 2.) sonication, reflux, 16-17 h;	A 63% B n/a C 54%

...Expand

: 17702-41-9
nido-decaborane

: 109-95-5
ethyl nitrite

A: 58985-53-8
nido-NB9H12

B: 150-46-9
triethyl borate

Conditions

Conditions	Yield
In tetrahydrofuran byproducts: H2, NO, NO2; addn. of ethylnitrite soln. to borane soln., -78°C; heating to room temp.; stirring, 3h; evapn.; extn. (hexane); evapn.; sublimation, 25°C, 0.001 Torr;	A 52% B n/a

...Expand

: 64-17-5
ethanol

: 1186392-99-3
(2-biphenyl)dicyclohexylphosphane-borane(1:1)

A: 150-46-9
triethyl borate

B: 247940-06-3
CyJohnPhos

Conditions

Conditions	Yield
Inert atmosphere; Reflux;	A n/a B 52%

...Expand

: 11113-50-1
boric acid

: 150-46-9
triethyl borate

Conditions

Conditions	Yield
With ethanol In benzene a mixt. of ethanol, benzene, orthoboric acid, and anhydrous CuSO4 is boiled on a Dean-Stark apparatus with driving off water (40-50 h);; repeated fractional distn.;;	35%
With ethanol
With ethanol In ethanol at room temp.;
With ethanol In ethanol at room temp.;
With C2H5OH

: 121-43-7
Trimethyl borate

: 64-17-5
ethanol

: 150-46-9
triethyl borate

: 688-74-4
boric acid tributyl ester

: 64-17-5
ethanol

: 150-46-9
triethyl borate

Conditions

Conditions	Yield
With sulfuric acid

: 64-17-5
ethanol

: 23561-28-6
diethyl boronate

: 150-46-9
triethyl borate

: 64-17-5
ethanol

: 150-46-9
triethyl borate

Conditions

Conditions	Yield
With boron trichloride
With sodium borate; acetic acid
With boron trichloride at -60℃; im Hochvakuum;

: 20905-32-2
bis(ethoxy)chloroborane

: 150-46-9
triethyl borate

Conditions

Conditions	Yield
With sodium
With zinc

: 108-24-7
acetic anhydride

: 150-46-9
triethyl borate

Conditions

Conditions	Yield
With tert-butyl-N-methyl-N-isopropylamine-borane In tetrahydrofuran at 20℃; for 24h; Reduction;

: 78-10-4
tetraethoxy orthosilicate

boron bromide: boron bromide

A: 150-46-9
triethyl borate

B: 18076-81-8
tribromo-ethoxy-silane

...Expand

: 64-17-5
ethanol

acetic boric anhydride: acetic boric anhydride

: 150-46-9
triethyl borate

: 64-17-5
ethanol

boranyl disulfate: boranyl disulfate

: 150-46-9
triethyl borate

: 150-46-9
triethyl borate

: 201230-82-2
carbon monoxide

: 620-13-3
1-bromomethyl-3-methyl-benzene

: 40061-55-0
ethyl m-methylphenylacetate

Conditions

Conditions	Yield
1,5-hexadienerhodium(I)-chloride dimer at 75℃; under 760 Torr; Heating; overnight; other solvent;	100%

...Expand

: 150-46-9
triethyl borate

: 7035-02-1
2-Methoxybenzyl chloride

carbon monoxide: carbon monoxide

: 6056-23-1
ethyl (2-methoxyphenyl)acetate

Conditions

Conditions	Yield
With potassium iodide; <1,5-HDRhCl>2	100%

...Expand

: 150-46-9
triethyl borate

: 511277-96-6
tert-butyl-dimethyl-(4-bromo-2-ethyl-5-methoxy-benzyloxy)-silane

: 511277-98-8
tert-butyl-dimethyl-(4-boronic acid-2-ethyl-5-methoxy-benzyloxy)-silane

Conditions

Conditions	Yield
Stage #1: tert-butyl-dimethyl-(4-bromo-2-ethyl-5-methoxy-benzyloxy)-silane With n-butyllithium In tetrahydrofuran at -78 - -70℃; for 1h; Stage #2: triethyl borate In tetrahydrofuran at -30 - 23℃; for 2h;	100%
With n-butyllithium In tetrahydrofuran	9.0 g (100%)

: 150-46-9
triethyl borate

: 104-10-9
2-(4'-aminophenyl)ethyl alcohol

: 76644-60-5
B(OCH2CH2C6H4NH2)3

Conditions

Conditions	Yield
In benzene byproducts: ethanol; molar ratio B(OEt)3:alcohol=1:3, refluxing; distn. (reduced pressure); elem. anal.;	100%

: 150-46-9
triethyl borate

: 681171-32-4
2-(4-bromo-2,5-dimethoxy-phenyl)-[1,3]dioxolane

: 681171-33-5
2-(4-boronic acid-2,5-dimethoxy-phenyl)-[1,3]dioxolane

Conditions

Conditions	Yield
Stage #1: 2-(4-bromo-2,5-dimethoxy-phenyl)-[1,3]dioxolane With n-butyllithium In tetrahydrofuran at -78 - -70℃; for 0.5h; Stage #2: triethyl borate In tetrahydrofuran at -30 - 23℃; for 2h;	100%

: 150-46-9
triethyl borate

: 681171-47-1
[2-(4-Bromo-2-ethyl-5-methoxy-phenyl)-ethoxy]-tert-butyl-dimethyl-silane

: 681171-48-2
[2-(4-boronic acid-2-ethyl-5-methoxy-phenyl)-ethoxy]-tert-butyl-dimethyl-silane

Conditions

Conditions	Yield
Stage #1: [2-(4-Bromo-2-ethyl-5-methoxy-phenyl)-ethoxy]-tert-butyl-dimethyl-silane With n-butyllithium In tetrahydrofuran at -78 - -70℃; for 1h; Stage #2: triethyl borate In tetrahydrofuran at -30 - 23℃; for 2h;	100%

: 150-46-9
triethyl borate

: 103068-20-8
1-bromo-3,5-diphenylbenzene

: 128388-54-5
3,5-diphenylphenylboronic acid

Conditions

Conditions	Yield
Stage #1: 1-bromo-3,5-diphenylbenzene With n-butyllithium In tetrahydrofuran at -78℃; for 2h; Inert atmosphere; Stage #2: triethyl borate In tetrahydrofuran at -78℃; for 24h; Inert atmosphere;	97%

: 150-46-9
triethyl borate

: 124898-13-1
trimethyl(pentafluoroethyl)silane

: potassium (pentafluoroethyl)triethoxyborate

Conditions

Conditions	Yield
With potassium fluoride In tetrahydrofuran at 20 - 50℃; for 8h;	96%

: salicylaldazine

: 150-46-9
triethyl borate

: 75777-73-0
ethoxyboron(salicylaldehydeazinate)

Conditions

Conditions	Yield
In benzene addn. of ligand to boron ethoxide in dry benzene, refluxing over a fractionating column; removal of solvent, drying under reduced pressure, elem. anal.;	96%

: 150-46-9
triethyl borate

: 81290-20-2
(trifluoromethyl)trimethylsilane

: potassium (trifluoromethyl)triethoxyborate

Conditions

Conditions	Yield
With potassium fluoride In tetrahydrofuran at 20℃; for 24h;	95%
With potassium fluoride In 1,2-dimethoxyethane at 20℃;

: 150-46-9
triethyl borate

: 122-98-5
2-Anilinoethanol

: 22394-30-5
Borsaeure-tris-(β-anilino-ethylester)

Conditions

Conditions	Yield
In benzene byproducts: ethanol; molar ratio B(OEt)3:alcohol=1:3, refluxing; distn. (reduced pressure); elem. anal.;	95%

: bis-{2-hydroxy-1-naphthyl-methylene} hydrazine

: 150-46-9
triethyl borate

: ethoxyboron(2-hydroxy-1-naphthaldehydeazinate)

Conditions

Conditions	Yield
In benzene addn. of ligand to boron ethoxide in dry benzene, refluxing over a fractionating column; removal of solvent, drying under reduced pressure, elem. anal.;	95%

: 617-86-7
triethylsilane

: 150-46-9
triethyl borate

: 18546-66-2
tris-(triethylsilyl)-borate

Conditions

Conditions	Yield
With tris(pentafluorophenyl)borate In benzene at 85℃; for 3h;	95%

: 150-46-9
triethyl borate

: 4620-70-6
2-[(1,1-dimethylethyl)amino]-ethanol

: 76644-57-0
B(OCH2CH2NHC(CH3)3)3

Conditions

Conditions	Yield
In benzene byproducts: ethanol; molar ratio B(OEt)3:alcohol=1:3, refluxing; distn. (reduced pressure); elem. anal.;	94%

: 150-46-9
triethyl borate

: C10H12N4O3(2-)*2Na(1+)

: 1188369-98-3
C10H11BN4O3

Conditions

Conditions	Yield
Stage #1: C10H12N4O3(2-)*2Na(1+) With sulfuric acid In 1,4-dioxane; acetonitrile at 0℃; Stage #2: triethyl borate In 1,4-dioxane; acetonitrile at 50℃;	94%

: 150-46-9
triethyl borate

: N,N'-di-tert-butoxycarbonyl-2,2'-bipyrrole

: (N,N'-di-tert-butoxycarbonyl-2,2'-bipyrrol-5-yl)boronic acid

Conditions

Conditions	Yield
Stage #1: N,N'-di-tert-butoxycarbonyl-2,2'-bipyrrole With 2,2,6,6-tetramethyl-piperidine; n-butyllithium In tetrahydrofuran; hexane at -78℃; for 3h; Inert atmosphere; Stage #2: triethyl borate In tetrahydrofuran; hexane at -78 - 20℃; for 18.5h; Inert atmosphere;	94%

: 150-46-9
triethyl borate

: 352-11-4
1-chloromethyl-4-fluorobenzene

carbon monoxide: carbon monoxide

: 587-88-2
ethyl 2-(4-fluorophenyl)acetate

Conditions

Conditions	Yield
With potassium iodide; <1,5-HDRhCl>2	93%

...Expand

: 150-46-9
triethyl borate

: 4777-13-3
2,2,3,5,5,6,6-Heptafluoro(5,6-dihydro-2H-1,4-oxazine)

: 5-ethoxy-2,2,3,3,6,6-hexafluoro-3,6-dihydro-2H-1,4-oxazine

Conditions

Conditions	Yield
With tert-amyl peroxy-2-ethylhexanoate at 75 - 90℃; Sealed tube; Cooling with acetone-dry ice;	92.4%

Triethyl borate Specification

The IUPAC name of this chemical is triethyl borate. With the CAS registry number 150-46-9, it is also named as Boric acid, triethyl ester. The product's categories are Organometallics; B (Classes of Boron Compounds); Boric Acid Esters; Boric Acid Triesters. It is clear colourless liquid which reacts easily with water. Additionally, this chemical should be sealed in the container and stored in the cool and dry place at the temperature of 0-6 °C.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 3.05; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.04; (4)ACD/LogD (pH 7.4): 3.04; (5)ACD/BCF (pH 5.5): 121.31; (6)ACD/BCF (pH 7.4): 121.31; (7)ACD/KOC (pH 5.5): 1079.6; (8)ACD/KOC (pH 7.4): 1079.6; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 6; (12)Index of Refraction: 1.374; (13)Molar Refractivity: 38.51 cm³; (14)Molar Volume: 168.6 cm³; (15)Surface Tension: 22.3 dyne/cm; (16)Enthalpy of Vaporization: 34.33 kJ/mol; (17)Vapour Pressure: 18.6 mmHg at 25°C; (18)Rotatable Bond Count: 6; (19)Exact Mass: 146.111425; (20)MonoIsotopic Mass: 146.111425; (21)Topological Polar Surface Area: 27.7; (22)Heavy Atom Count: 10; (23)Complexity: 55.7.

Preparation of Triethyl borate: It can be obtained by dissolving boric acid in ethanol. The equilibrium reaction is as following:
B(OH)₃ + 3 C₂H₅OH (C₂H₅O)₃B + 3 H₂O

Uses of Triethyl borate: It is used as a solvent and/or catalyst in preparation of synthetic waxes, resins, paints, and varnishes. It is also used as a component of some flame retardants in textile industry and of some welding fluxes.In addition, it can react with 1-bromomethyl-3-methyl-benzene and carbon monoxide to get m-tolyl-acetic acid ethyl ester. This reaction needs catalytic agent 1,5-hexadieneρdium chloride at temperature of 75 °C and the pressure of 760.0002. The yield is 100%.

When you are using this chemical, please be cautious about it as the following:
It is highly flammable, so people should keep it away from sources of ignition. When use it, people must not breathe vapour. And take precautionary measures against static discharges.

People can use the following data to convert to the molecule structure.
1. SMILES:O(B(OCC)OCC)CC
2. InChI:InChI=1/C6H15BO3/c1-4-8-7(9-5-2)10-6-3/h4-6H2,1-3H3
3. InChIKey:AJSTXXYNEIHPMD-UHFFFAOYAB

The following are the toxicity data which has been tested.

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD50	oral	2100mg/kg (2100mg/kg)		"Boron, Metallo-Boron Compounds and Boranes," Adams, R.M., ed., New York, John Wiley & Sons, Inc., 1964Vol. -, Pg. 693, 1964.

Product Name

Triethyl borate

Synthetic route

Triethyl borate Specification

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