| Identification | More | [Name]
Triethylborane | [CAS]
97-94-9 | [Synonyms]
Boron ethyl
BORON TRIETHYL
TRIETHYLBORANE
TRIETHYLBORON
(C2H5)3B
borane,triethyl-
Borethyl
triethyl-boran
triethylborane,teb
triethylborane,teb,inhexanes
triethylborane,teb,intetrahydrofuran
triethylborane-1,3-diaminopropane
triethylborane-1,3-diaminopropanecomplex,teb-dap
Triethylborine
Triethylborane, in hexanes, 1M solution
Triethylborane, in tetrahydrofuran
Triethylborane-1,3-diaminopropane complex
TRIETHYLBORANE SOLUTION, ~1 M IN THF
TRIETHYLBORANE SOLUTION, ~15% IN HEXANE
TRIETHYLBORANE, 95+% | [EINECS(EC#)]
202-620-9 | [Molecular Formula]
C6H15B | [MDL Number]
MFCD00009022 | [Molecular Weight]
97.99 | [MOL File]
97-94-9.mol |
| Chemical Properties | Back Directory | [Appearance]
CLEAR COLOURLESS TO LIGHT AMBER SOLUTION | [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
| [Fp ]
1 °F
| [storage temp. ]
0-6°C | [form ]
Liquid | [color ]
Colorless to light amber | [Water Solubility ]
Decomposes | [Specific Heat Capacity]
Cp(liquid):241.2J/(g·K),at 25℃ | [Sensitive ]
Air Sensitive | [Merck ]
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) | [Storage Precautions]
Store under nitrogen | [EPA Substance Registry System]
97-94-9(EPA Substance) |
| Safety Data | Back Directory | [Symbol(GHS) ]
  
GHS02,GHS05,GHS06 | [Signal word ]
Danger | [Hazard statements ]
H250-H301-H314 | [Precautionary statements ]
P231+P232-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P370+P378 | [Hazard Codes ]
F+,C,N,F | [Risk Statements ]
R12:Extremely Flammable.
R17:Spontaneously flammable in air.
R19:May form explosive peroxides.
R22:Harmful if swallowed.
R34:Causes burns.
R66:Repeated exposure may cause skin dryness or cracking.
R67:Vapors may cause drowsiness and dizziness.
R65:Harmful: May cause lung damage if swallowed.
R62:Possible risk of impaired fertility.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R48/20:Harmful: danger of serious damage to health by prolonged exposure through inhalation .
R11:Highly Flammable. | [Safety Statements ]
S7:Keep container tightly closed .
S9:Keep container in a well-ventilated place .
S16:Keep away from sources of ignition-No smoking .
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S29:Do not empty into drains .
S33:Take precautionary measures against static discharges .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label . | [RIDADR ]
UN 3399 4.3/PG 2
| [WGK Germany ]
2
| [RTECS ]
ED2100000 | [F ]
2-10 | [TSCA ]
Yes | [REACH Registrations]
Active | [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 | [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. | [Hazardous Substances Data]
97-94-9(Hazardous Substances Data) | [Toxicity]
LD50 orl-rat: 235 mg/kg 14KTAK -,693,64 |
| Hazard Information | Back Directory | [Chemical Properties]
Clear colourless to light amber solution. Miscible with most organic solvents; immiscible with water.
| [Uses]
It is used in mixtures with triethylaluminumas hypergolic igniters in rocket propulsionsystems. | [Uses]
Reagent in organic syntheses blocking agent and radical initiator. | [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 | [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.] |
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