Triethylborane
- Product Name
- Triethylborane
- CAS No.
- 97-94-9
- Chemical Name
- Triethylborane
- Synonyms
- TRIETHYLBORON;(C2H5)3B;Borethyl;Triethylbo;Boron ethyl;TRIETHYLBORANE;BORON TRIETHYL;triethyl-boran;Triethylborine;borane,triethyl-
- CBNumber
- CB0288846
- Molecular Formula
- C6H15B
- Formula Weight
- 97.99
- MOL File
- 97-94-9.mol
Triethylborane Property
- Melting point:
- -92°C
- Boiling point:
- 95°C
- Density
- 0.865 g/mL at 25 °C
- vapor pressure
- 67hPa at 25℃
- refractive index
- n20/D 1.380
- Flash point:
- 1 °F
- storage temp.
- 0-6°C
- form
- Liquid
- color
- Colorless to light amber
- Water Solubility
- Decomposes
- Sensitive
- Air Sensitive
- Merck
- 14,9668
- BRN
- 1731462
- Exposure limits
- ACGIH: TWA 50 ppm; STEL 100 ppm (Skin)
OSHA: TWA 200 ppm(590 mg/m3)
NIOSH: IDLH 2000 ppm; TWA 200 ppm(590 mg/m3); STEL 250 ppm(735 mg/m3) - InChI
- 1S/C6H15B/c1-4-7(5-2)6-3/h4-6H2,1-3H3
- InChIKey
- LALRXNPLTWZJIJ-UHFFFAOYSA-N
- SMILES
- CCB(CC)CC
- CAS DataBase Reference
- 97-94-9(CAS DataBase Reference)
- NIST Chemistry Reference
- Borane, triethyl-(97-94-9)
- EPA Substance Registry System
- Borane, triethyl- (97-94-9)
Safety
- Hazard Codes
- F+,C,N,F
- Risk Statements
- 12-17-19-22-34-66-67-65-62-51/53-48/20-11-40-37
- Safety Statements
- 7-9-16-23-26-29-33-36/37/39-43-45-61-43A-62
- RIDADR
- UN 3399 4.3/PG 2
- WGK Germany
- 2
- RTECS
- ED2100000
- F
- 2-10
- TSCA
- TSCA listed
- HazardClass
- 3
- PackingGroup
- II
- HS Code
- 29319090
- Storage Class
- 4.3 - Hazardous materials which set free flammable gases upon contact with water
- Hazard Classifications
- Aquatic Chronic 2
Asp. Tox. 1
Eye Dam. 1
Flam. Liq. 2
Repr. 2
Skin Corr. 1A
STOT RE 1 Inhalation
STOT SE 3 - Hazardous Substances Data
- 97-94-9(Hazardous Substances Data)
- Toxicity
- LD50 orl-rat: 235 mg/kg 14KTAK -,693,64
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H225Highly Flammable liquid and vapour
H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H333May be harmful if inhaled
H335May cause respiratory irritation
H351Suspected of causing cancer
H371May cause damage to organs
H372Causes damage to organs through prolonged or repeated exposure
- Precautionary statements
-
P201Obtain special instructions before use.
P202Do not handle until all safety precautions have been read and understood.
P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233Keep container tightly closed.
P240Ground/bond container and receiving equipment.
P241Use explosion-proof electrical/ventilating/lighting/…/equipment.
P242Use only non-sparking tools.
P243Take precautionary measures against static discharge.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
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/face protection.
P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P363Wash contaminated clothing before reuse.
P370+P378In case of fire: Use … for extinction.
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/container to..…
N-Bromosuccinimide Price
- Product number
- 179701
- Product name
- Triethylborane solution
- Purity
- 1.0 M in THF
- Packaging
- 100ml
- Price
- $134
- Updated
- 2026/04/30
- Product number
- 179701
- Product name
- Triethylborane solution
- Purity
- 1.0 M in THF
- Packaging
- 800ml
- Price
- $492
- Updated
- 2026/04/30
- Product number
- T1984
- Product name
- Triethylborane (ca. 11% in Tetrahydrofuran, ca. 1mol/L)
- Packaging
- 100mL
- Price
- $446
- Updated
- 2026/04/30
- Product number
- 93-0540
- Product name
- Triethylborane, 98%
- Packaging
- 100g
- Price
- $440
- Updated
- 2024/03/01
- Product number
- MT-59833
- Product name
- Triethylborane
- Purity
- 97%
- Packaging
- 100g
- Price
- $260
- Updated
- 2026/05/26
Triethylborane Chemical Properties,Usage,Production
Chemical Properties
Clear colourless to light amber solution. Miscible with most organic solvents; immiscible with water.
Uses
Reagent in organic syntheses blocking agent and radical initiator.
Uses
Triethylborane reacted with 8-hydroxyquinoline to synthesize three 8--hydroxyquinolato (q) boron compounds B(C2H5)2q (1), BPh2q (2), and B(2-naph)2q (3).
Uses
It is used in mixtures with triethylaluminumas hypergolic igniters in rocket propulsionsystems.
Preparation
Triethylborane is prepared by reacting triethylaluminium with boron halides or by reacting diborane with ethylene:
(C₂H₅)₃Al + BCl₃ → (C₂H₅)₃B + AlCl₃
B₂H₆ + CH₂=CH₂ → (C₂H₅)₃B
Synthesis Reference(s)
The Journal of Organic Chemistry, 51, p. 427, 1986 DOI: 10.1021/jo00354a002
Hazard
Flammable, dangerous fire risk, ignites spontaneously in air. Reacts violently with water and oxidizing materials. Toxic by inhalation, strong irritant.
Health Hazard
Triethylboron is a toxic substance. The toxicsymptoms from chronic exposure to thiscompound are not reported. Skin contact canburn tissues.
Fire Hazard
Triethylborane is a pyrophoric substance, igniting spontaneously on exposure to air, chlorine, or bromine. Explosion may result when mixed with oxygen. Contact with ozone, peroxides and other oxidants can cause explosion. Its concentrated solutions can be pyrophoric. Flash point of 1 M solution in hexane is －23°C ( －9°F), while that in tetrahydrofuran is －17°C (1°F) (Aldrich 1996). It decomposes explosively when mixed with water.
Flammability and Explosibility
Pyrophoric
reaction suitability
reagent type: reductant
Safety Profile
Poison by ingestion and intraperitoneal routes. Mildly toxic by inhalation. Animal experiments show that the vapor is a poison which causes pulmonary irritation and convulsions. A very dangerous fire hazard by spontaneous chemical reaction with oxichzers. Spontaneously flammable in air. Explodes in oxygen atmospheres. Hypergolic reaction with triethylaluminum. Ignites on contact with chlorine, bromine, or other halogens. Will react with water or steam to produce toxic and flammable vapors. To fight fire, do NOT use halogenated extinguishing agents. When heated to decomposition or upon contact with air it emits toxic acrid smoke and irritating fumes. See also BORANES and BORON COMPOUNDS.
Purification Methods
It distils at 56-57o/220mm. It can also be purified via its ammonia addition complex which is distilled in a high vacuum, decomposed with dry HCl, and the Et3B is distilled out. It is commercially available as a 15% solution in hexane or as 1M solution in hexane. [Brown J Am Chem Soc 67 376 1945, Bamford et al. J Chem Soc 471 1946, Lin et al. J Organomet Chem 312 277 1986, Beilstein 4 III 1957, 4 IV 4359.]
Triethylborane Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Triethylborane manufacturers
- Product
- Triethylborane 97-94-9
- Price
- US $9.90/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 10 mt
- Release date
- 2024-11-29
- Product
- Triethylborane 97-94-9
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-08-11
- Product
- Triethylborane (ca. 11% in Tetrahydrofuran, ca. 1mol/L) 97-94-9
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-06-27