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10294-33-4

10294-33-4 structural image
Product Name: Boron tribromide
Formula: BBr3
Synonyms: Tribromoboron
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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.
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
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
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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