Triethylborane
CAS No.: 97-94-9
Synonyms:
Formula: C6H15B
Exact Mass: 98.12670
Molecular Weight: 97.99430
PSA: 0.00000
LogP: 2.54090
Triethylborane 97-94-9 MSDS
Name: Triethylborane 1M solution in THF Material Safety Data Sheet
Synonym:
CAS: 97-94-9
Section 1 - Chemical Product   MSDS Name:Triethylborane 1M solution in THF Material Safety Data Sheet
Synonym:

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
97-94-9 Triethylborane 9.8 202-620-9
Hazard Symbols: XI F C
Risk Phrases: 11 17 19 34 36/37

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Highly flammable. Spontaneously flammable in air. May form explosive peroxides. Causes burns. Irritating to eyes and respiratory system.Air sensitive.
Potential Health Effects
Eye:
Contact with eyes may cause severe irritation, and possible eye burns. Vapors may cause eye irritation.
Skin:
Causes skin irritation. Prolonged and/or repeated contact may cause defatting of the skin and dermatitis.
Ingestion:
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause headache. May cause nausea and vomiting. May cause unconsciousness. May cause central nervous system depression.
Inhalation:
Inhalation of high concentrations may cause central nervous system effects characterized by nausea, headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation.
Chronic:
Prolonged or repeated eye contact may cause conjunctivitis.
Prolonged or repeated skin contact may cause defatting and dermatitis. May cause liver and kidney damage.

Section 4 - FIRST AID MEASURES
  Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin:
Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Discard contaminated clothing in a manner which limits further exposure.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Vapors can travel to a source of ignition and flash back. Will burn if involved in a fire. Wear appropriate protective clothing to prevent contact with skin and eyes. Wear a self-contained breathing apparatus (SCBA) to prevent contact with thermal decomposition products. Extremely flammable liquid and vapor.
Forms peroxides of unknown stability.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use halogenated agents.
DO NOT USE WATER! Use dry chemical.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Use water spray to dilute spill to a non-flammable mixture. Remove all sources of ignition. Use a spark-proof tool.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Use only in a well-ventilated area.
Avoid contact with eyes, skin, and clothing. Do not breathe dust, vapor, mist, or gas. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Keep away from heat, sparks and flame. Avoid ingestion and inhalation. Use and store under nitrogen. Container should be opened by a technically qualified person. Use only in a chemical fume hood.
Prevent build up of vapors to explosive concentration. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool place in the original container and protect from sunlight. Store in a cool, dry place. Store in a tightly closed container. Keep from contact with oxidizing materials. Flammables-area. Regularly check inhibitor levels to maintain peroxide levels below 1%.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 97-94-9: CAS# 109-99-9: United Kingdom, WEL - TWA: 50 ppm TWA; 150 mg/m3 TWA United Kingdom, WEL - STEL: 100 ppm STEL; 300 mg/m3 STEL United States OSHA: 200 ppm TWA; 590 mg/m3 TWA Belgium - TWA: 200 ppm VLE; 599 mg/m3 VLE Belgium - STEL: 100 ppm VLE; 300 mg/m3 VLE France - VME: 200 ppm VME; 590 mg/m3 VME Germany: 50 ppm TWA; 150 mg/m3 TWA Germany: Skin absorber Japan: 200 ppm OEL; 590 mg/m3 OEL Malaysia: 200 ppm TWA; 590 mg/m3 TWA Netherlands: 100 ppm MAC; 300 mg/m3 MAC Russia: 100 mg/m3 TWA Spain: 50 ppm VLA-ED; 150 mg/m3 VLA-ED Spain: 100 ppm VLA-EC; 300 mg/m3 VLA-EC Personal Protective Equipment Eyes: Wear chemical splash goggles. Wear safety glasses and chemical goggles if splashing is possible.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to minimize contact with skin.
Respirators:
A NIOSH/MSHA approved or European Standard EN 149 air purifying respirator with an organic vapor cartridge or canister may be permissible under certain circumstances where airborne concentrations are expected. Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149.
Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Color: Clear
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: -17 deg C ( 1.40 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density: .8650g/cm3
Molecular Formula: C6H15B
Molecular Weight: 98.00

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Prolonged exposure to air and sunlight may form unstable peroxides.
Explosive peroxides may form on concentration. Peroxides can be detonated by friction, impact, or heating. Peroxide formation may occur in containers that have been opened and remain in storage.
Normally stable; however, on long term storage, materials containing similar functional groups form peroxides of unknown stability.
Conditions to Avoid:
Normally stable; however, on long term storage, materials containing similar functional groups form peroxides of unknown stability., incompatible materials, light, ignition sources.
Incompatibilities with Other Materials:
It is explosive with potassium hydroxide, sodium hydroxide, and sodium tetrahydroaluminate since caustic alkalies deplete the inhibitor. Reacts with potassium dioxide 2-aminophenol to form an explosive product. Reacts violently with metal halides. Forms explosive hydrogen gas with borane or lithium tetrahydroaluminate and reacts vigorously with bromine and calcium hydride+heat. Incompatible with sulfinyl chloride and oxidizing materials. Hazardous polymerization may occur in the presence of cationic initiators such as strong proton acids or selected Lewis acids.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, oxides of boron.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 97-94-9: ED2100000 CAS# 109-99-9: LU5950000 LD50/LC50:
CAS# 97-94-9: Inhalation, rat: LC50 = 700 ppm/4H; Oral, mouse: LD50 = 720 mg/kg; Oral, rat: LD50 = 235 mg/kg.
CAS# 109-99-9: Inhalation, rat: LC50 = 21000 ppm/3H; Oral, rat: LD50 = 1650 mg/kg.
Carcinogenicity:
Triethylborane - Not listed by ACGIH, IARC, or NTP.
Tetrahydrofuran - ACGIH: A3 - Confirmed animal carcinogen with unknown relevance to Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
  Ecotoxicity:
Blue-green algae, growth inhibition microcystis=225 mg/L (PH=7); Protozoa, cell multiplication inhibition test=858 mg/L.
Cas# 109-99-9: LC50 Pimephales promelas (fathead minnow) 2160 mg/l 96 hr flow-through bioassay, wt 0.12 g, water hardness 45.5 mg/l CaCO3, temp:25 +/- 1 deg C, pH 7.5, dissolved oxygen greater than 60% of saturation.

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: FLAMMABLE LIQUID, N.O.S.*
Hazard Class: 3
UN Number: 1993
Packing Group: II
IMO
Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3.2
UN Number: 1993
Packing Group: II
RID/ADR
Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3
UN Number: 1993
Packing group: II
USA RQ: CAS# 109-99-9: 1000 lb final RQ; 454 kg final RQ

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI F C
Risk Phrases:
R 11 Highly flammable.
R 17 Spontaneously flammable in air.
R 19 May form explosive peroxides.
R 34 Causes burns.
R 36/37 Irritating to eyes and respiratory system.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 33 Take precautionary measures against static
discharges.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 43A In case of fire, use dry chemical (never use
water).
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 97-94-9: No information available.
CAS# 109-99-9: 1
Canada
CAS# 97-94-9 is listed on Canada's NDSL List.
CAS# 109-99-9 is listed on Canada's DSL List.
CAS# 97-94-9 is not listed on Canada's Ingredient Disclosure List.
CAS# 109-99-9 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 97-94-9 is listed on the TSCA inventory.
CAS# 109-99-9 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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