CHEMICAL AND PHYSICAL PROPERTIES
Physical Description | Boron tribromide appears as a colorless, fuming liquid with a pungent odor. Boiling point 194 °F. Freezing point -51 °F. Very toxic by inhalation. Corrosive to metals and tissue. |
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Color/Form | Colorless, fuming liquid |
Odor | Sharp, irritating odor |
Boiling Point | 196 °F at 760 mmHg (USCG, 1999) |
Melting Point | -51 °F (USCG, 1999) |
Solubility | Decomposes (NIOSH, 2023) |
Density | 2.645 at 68 °F (USCG, 1999) - Denser than water; will sink |
Vapor Density | Relative vapor density (air = 1): 8.6 |
Vapor Pressure | 40 mmHg at 57 °F (NIOSH, 2023) |
Stability/Shelf Life | Trialkylboranes are stable indefinitely when stored under an inert atmosphere. /Trialkylboranes/ |
Decomposition | On decomposition, /one mole of/ boron tribromide would be expected to produce three moles of hydrogen bromide. |
Viscosity | 0.731 cP at 75 °F (liquid) |
Corrosivity | Strongly attacks metals and wood |
Heat of Vaporization | 30.5 kJ/mol at 91 °C |
Surface Tension | 29.1 dynes/cm = 0.0291 N/m at 22 °C |
Ionization Potential | 9.70 eV |
Refractive Index | INDEX OF REFRACTION: 1.5312 AT 16.3 °C/D |
Other Experimental Properties | Decomposes on contact with alcohol. This produces toxic and corrosive fumes of hydrogen bromide. Reacts with water. This produces hydrogen bromide gas. |
Chemical Classes | Toxic Gases & Vapors -> Other Toxic Gases & Vapors |
SAFETY INFORMATION
Signal word | Danger |
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Pictogram(s) |
Corrosion Corrosives GHS05 Skull and Crossbones Acute Toxicity GHS06 |
GHS Hazard Statements |
H314:Skin corrosion/irritation |
Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P270:Do not eat, drink or smoke when using this product. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
COMPUTED DESCRIPTORS
Molecular Weight | 250.53 g/mol |
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Hydrogen Bond Donor Count | 0 |
Hydrogen Bond Acceptor Count | 0 |
Rotatable Bond Count | 0 |
Exact Mass | 249.76227 g/mol |
Monoisotopic Mass | 247.76432 g/mol |
Topological Polar Surface Area | 0 Ų |
Heavy Atom Count | 4 |
Formal Charge | 0 |
Complexity | 8 |
Isotope Atom Count | 0 |
Defined Atom Stereocenter Count | 0 |
Undefined Atom Stereocenter Count | 0 |
Defined Bond Stereocenter Count | 0 |
Undefined Bond Stereocenter Count | 0 |
Covalently-Bonded Unit Count | 1 |
Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Boron tribromide appears as a colorless, fuming liquid with a pungent odor. Boiling point 194 °F. Freezing point -51 °F. Very toxic by inhalation. Corrosive to metals and tissue.
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