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Aliphatic and alicyclic building blocks

Triethyl borate

Also known as Triethoxyborane, Boron triethoxide, Triethoxyboron

CAS 150-46-9Formula C6H15BO3Molar mass 146.00 g/molEC 205-760-9
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant, Serious health hazard 14 suppliers listed
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Triethyl borate chemical structure, C6H15BO3, CAS 150-46-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
150-46-9
Formula
C6H15BO3
Physical form
Liquid
HS code
292090
Category
Aliphatic and alicyclic building blocks
UN number
UN 1176
Illustrative photo, closed blue steel drums of liquid in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Triethyl borate?

Plain description, key identifiers and synonyms

Triethyl borate is a member of the class of borate esters obtained by the formal condensation of three equivalents of ethanol with boric acid. It is functionally related to an ethanol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
triethyl borate
CAS number
150-46-9 CAS number cross-checkedOther or deprecated CAS: 34099-73-5, 51845-86-4
EC number
205-760-9
Molecular formula
C6H15BO3
UNII
WXW2J80ORX
MDL number
MFCD00009073
InChIKey
AJSTXXYNEIHPMD-UHFFFAOYSA-N
InChI
InChI=1S/C6H15BO3/c1-4-8-7(9-5-2)10-6-3/h4-6H2,1-3H3
SMILES (canonical and isomeric)
B(OCC)(OCC)OCC

Synonyms

  • Triethoxyborane
  • Boron triethoxide
  • Triethoxyboron
  • Boron ethoxide
  • Boric acid, triethyl ester
  • Borane, triethoxy-
  • Ethyl borate
  • Ethyl borate ((EtO)3B)
  • Boric acid (H3BO3), triethyl ester
  • Triethylester kyseliny borite
  • Triethylborat
  • B(OEt)3
  • Borsaeuretriethylester
  • B(OC2H5)3
  • Boric acid(H3BO3), triethyl ester
  • Boron ethoxide (b(oet)3)
  • 4-01-00-01365 (Beilstein Handbook Reference)
  • boric acid (H_3_BO_3_), triethyl ester
  • Triethoxyborine
  • Borane, triethoxy
  • Boric acid triethyl ester
  • Triethylborate
  • Triethlborate
  • triethoxy borane
  • Triethyl borate, 99%
Show all 28 synonyms
  • (EtO)3B
  • Triethyl borate Ethyl borate
  • Boric acid (H3-BO3), triethyl ester

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Liquidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
146.00 g/molcalc.
Exact mass
146.1114 Dacalc.
LogP (octanol/water)
1.08calc.
Topological polar surface area
27.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
6calc.
Heavy atoms
10calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H360FDMay damage fertility. May damage the unborn child.
  • H361Suspected of damaging fertility or the unborn child.
Precautionary statements (27)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1176
Transport hazard class
3
Packing group
II

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Triethyl borate suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 14 suppliers
14 of 14 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

14 suppliers in 7 countries

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Triethyl borate price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Semiconductor and photovoltaic agent, Adhesion/cohesion promoter.

Consumer uses: Semiconductor and photovoltaic agent.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Triethyl borate is traded under.

HS 2920.90Indicative HS code

Esters, other than thiophosphoric esters (phosphorothioates) and phosphite esters and their salts…

World exports in 2024
$1.05B
+8.0% vs 2023, imports $1.23B
2019 to 2024
Top exporters
  1. China33.4%
  2. Germany18.8%
  3. United States12.4%
Top importers
  1. United States19.2%
  2. Singapore8.9%
  3. South Korea6.9%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Triethyl borate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Triethyl borate, based on the data on this page

What is Triethyl borate?

Triethyl borate is a member of the class of borate esters obtained by the formal condensation of three equivalents of ethanol with boric acid. It is functionally related to an ethanol.

What is the CAS number of Triethyl borate?

The CAS registry number of Triethyl borate is 150-46-9. Other or deprecated CAS numbers: 34099-73-5, 51845-86-4.

What is the molecular formula and weight of Triethyl borate?

The molecular formula of Triethyl borate is C6H15BO3 and its molar mass is 146.00 g/mol.

What is Triethyl borate used for?

Industrial uses: Semiconductor and photovoltaic agent, Adhesion/cohesion promoter. Consumer uses: Semiconductor and photovoltaic agent.

Is Triethyl borate hazardous?

Triethyl borate carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Triethyl borate?

Triethyl borate is usually classified under HS code 292090 (Esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Triethyl borate?

CompoundList lists 14 suppliers of Triethyl borate in China, United States, Germany, India and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Triethyl borate in India?

1 supplier in India list Triethyl borate on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Triethyl borate?

Suppliers quote Triethyl borate on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Triethyl borate

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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