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Fuels and fuel additives

Triethylborane

Also known as Triethylboron, Borane, triethyl-, Triethylborine

CAS 97-94-9Formula C6H15BMolar mass 98.00 g/molEC 202-620-9
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Acute toxicity (severe), Serious health hazard 9 suppliers listed
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Triethylborane chemical structure, C6H15B, CAS 97-94-9
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless liquid
Melting point
-93 °C
Boiling point
95 °C
Density
0.70 g/cm³ at 23 °C
Flash point
-36.1 °C
HS code
293190
Category
Fuels and fuel additives
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Triethylborane?

Plain description, key identifiers and synonyms

Triethylborane is a chemical substance with the molecular formula C6H15B and a molar mass of 98.00 g/mol. Its CAS registry number is 97-94-9.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
triethylborane
CAS number
97-94-9 CAS number cross-checked
EC number
202-620-9
Molecular formula
C6H15B
UNII
Z3S980Z4P3
MDL number
MFCD00009022
InChIKey
LALRXNPLTWZJIJ-UHFFFAOYSA-N
InChI
InChI=1S/C6H15B/c1-4-7(5-2)6-3/h4-6H2,1-3H3
SMILES (canonical and isomeric)
B(CC)(CC)CC

Synonyms

  • Triethylboron
  • Borane, triethyl-
  • Triethylborine
  • Boron triethyl
  • Boron ethyl
  • BEt3
  • Et3B
  • Triethylborane (1.0 M in THF)
  • 4-04-00-04359 (Beilstein Handbook Reference)
  • triethylboran
  • Borethyl
  • triethyl borane
  • triethyl-borane
  • Triethylborane, >=95%
  • Triethylborane, 1 M in THF
  • Triethylborane, 1.0 M in hexanes
  • (C2H5)3B
  • Triethylborane 1.0 M solution in hexanes

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

Appearance
Colorless liquidexp.
Melting point
-93 °Cexp.
Boiling point
95 °Cexp.
Density
0.70 g/cm³ at 23 °Cexp.
Flash point
-36.1 °Cexp.
Solubility
Miscible with most organic solvents, immiscible with waterexp.
Vapour pressure
53 mm Hg at 25 °C /est/exp.

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
98.00 g/molcalc.
Exact mass
98.1267 Dacalc.
LogP (octanol/water)
2.54calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
3calc.
Heavy atoms
7calc.
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
GHS05: Corrosive
Corrosive
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard
312WNFPA 704 rating

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H250Catches fire spontaneously if exposed to air.
  • H301Toxic if swallowed.
  • H314Causes severe skin burns and eye damage.
  • H318Causes serious eye damage.
  • H330Fatal if inhaled.
  • H360May damage fertility or the unborn child.
Precautionary statements (35)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P222Do not allow contact with air.
  • P231Handle and store contents under inert gas.
  • 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.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P335 + P334If on skin: Brush off loose particles from skin. Immerse in cool water or wrap in wet bandages.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • 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 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P320Specific treatment is urgent (see supplemental first aid instructions on the label).
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P363Wash contaminated clothing 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.

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

Triethylborane suppliers

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

All 9 suppliers
9 of 9 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

9 suppliers in 6 countries

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Triethylborane 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

Fuel additive, igniter or fuel for jet and rocket engines, olefin polymerization catalyst, intermediate.

Triethylborane (TEB) is used by the USAF as a fuel additive to nonhypergolic propellants to increase fuel ignition speed and retard engine flameout.

Functional uses

  • Catalyst

How it is made

Reaction of triethylaluminum and boron halide, or diborane and ethylene

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 Triethylborane is traded under.

HS 2931.90Indicative HS code

Organo-inorganic compounds, other than tetramethyl lead, tetraethyl lead, tributyltin compounds…

World exports in 2024
$3.97B
+5.3% vs 2023, imports $3.93B
2019 to 2024
Top exporters
  1. China28.3%
  2. United States15.6%
  3. Germany15.1%
Top importers
  1. United States14.6%
  2. China13.0%
  3. South Korea8.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Triethylborane, based on the data on this page

What is Triethylborane?

Triethylborane is a chemical substance with the molecular formula C6H15B and a molar mass of 98.00 g/mol. Its CAS registry number is 97-94-9.

What is the CAS number of Triethylborane?

The CAS registry number of Triethylborane is 97-94-9.

What is the molecular formula and weight of Triethylborane?

The molecular formula of Triethylborane is C6H15B and its molar mass is 98.00 g/mol.

What is Triethylborane used for?

Fuel additive, igniter or fuel for jet and rocket engines, olefin polymerization catalyst, intermediate. Triethylborane (TEB) is used by the USAF as a fuel additive to nonhypergolic propellants to increase fuel ignition speed and retard engine flameout.

Is Triethylborane hazardous?

Triethylborane carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, catches fire spontaneously if exposed to air, toxic if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Triethylborane?

Triethylborane is usually classified under HS code 293190 (X. ORGANO-INORGANIC COMPOUNDS, HETEROCYCLIC COMPOUNDS, NUCLEIC ACIDS AND THEIR SALTS…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Triethylborane?

CompoundList lists 9 suppliers of Triethylborane in United States, China, Germany, India and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Triethylborane in India?

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

What is the price of Triethylborane?

Suppliers quote Triethylborane 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 Triethylborane

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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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