MSDS Name:Tri-sec-butylborane 1M solution in THF
Synonym:

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. May cause narcotic effects in high concentration.
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.

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.
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:

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. Use foam, dry chemical, or carbon dioxide. Water may be ineffective. Do NOT use halogenated agents. DO NOT USE WATER! Use dry chemical.

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.

Handling:
Wash thoroughly after handling. Use only in a well-ventilated area.
Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Avoid contact with skin and eyes. 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 under a nitrogen blanket. Keep from contact with oxidizing materials. Flammables-area. Regularly check inhibitor levels to maintain peroxide levels below 1%.

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# 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 CAS# 1113-78-6: 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 a chemical apron. 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.

Physical State: Liquid
Color: colorless
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: .7990g/cm3
Molecular Formula: C12H27B
Molecular Weight: 182.16

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, borane.
Hazardous Polymerization: Has not been reported.

RTECS#:
CAS# 109-99-9: LU5950000 CAS# 1113-78-6 unlisted.
LD50/LC50:
CAS# 109-99-9: Inhalation, rat: LC50 = 21000 ppm/3H; Oral, rat: LD50 = 1650 mg/kg.
CAS# 1113-78-6.
Carcinogenicity:
Tetrahydrofuran - ACGIH: A3 - Confirmed animal carcinogen with unknown relevance to Tri-sec-butylborane - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete 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.

Dispose of in a manner consistent with federal, state, and local regulations.

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

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 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 109-99-9: 1
CAS# 1113-78-6: No information available.
Canada
CAS# 109-99-9 is listed on Canadas DSL List.
CAS# 109-99-9 is listed on Canadas Ingredient Disclosure List.
CAS# 1113-78-6 is not listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 109-99-9 is listed on the TSCA inventory.
CAS# 1113-78-6 is not listed on the TSCA inventory.
It is for research and development use only.