NAVIGATION

BR

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Catalog Number

ACMA00016654

Product Name

Category

Polymers

Description

Bromine is a dark reddish-brown fuming liquid with a pungent odor. Denser than water and soluble in water. Hence sinks in water. Toxic by inhalation. Accelerates the burning of combustible material. It is very corrosive to tissue and to metals.;GasVapor; Liquid;FUMING RED-TO-BROWN LIQUID WITH PUNGENT ODOUR.;Dark reddish-brown, fuming liquid with suffocating, irritating fumes.;Dark reddish-brown, fuming liquid with suffocating, irritating fumes.

IUPAC Name

molecular bromine

Molecular Weight

159.81g/mol

Molecular Formula

Br2;Br2

Canonical SMILES

BrBr

InChI

InChI=1S/Br2/c1-2

InChI Key

GDTBXPJZTBHREO-UHFFFAOYSA-N

Boiling Point

139.2 °F at 760 mm Hg (EPA, 1998);58.8 °C;58.8 °C;139°F;139°F

Melting Point

19 °F (EPA, 1998);-7.2 °C;-7.2 °C;19°F;19°F

Density

3.1023 at 77 °F (EPA, 1998);3.1023 at 25 °C/4 °C;Relative density (water = 1): 3.1;3.1023;3.12

Solubility

4 % (NIOSH, 2016);Solubility in water (25 °C): 0.2141 mol/L with formation of 0.00115 mol/L of HOBr;In water, 33.6 g/L at 25 °C;Water solubility: 35.8 g/L at 20 °C; 41.7 g/L at 0 °C;Freely soluble in alcohol, ether, chloroform, carbon tetrachloride, carbon disulfide, concentrated hydrochloride acid, aq solutions of bromides;Bromine is soluble in nonpolar solvents and in certain polar solvents such as alcohol and sulfuric acid. It is miscible with ... many halogenated solvents.;Solubility in water, g/100ml at 20 °C: 4.0;4%

Color/Form

Dark reddish-brown, volatile, mobile diatomic liquid; vaporizes at room temperature;Dense, dark red, mobile liquid; vaporizes readily at room temperature to give a red vapor

Complexity

Corrosivity

Corrosive material;Vapor is highly corrosive to many materials and human tissue;Attacks most metals, including platinum and palladium; dry bromine does not attack lead, nickel, magnesium, tantalum, iron, zinc or (below 300 °C) sodium

Covalently-Bonded Unit Count

EC Number

231-778-1

Exact Mass

159.83463g/mol

Formal Charge

Heat of Vaporization

187 J/g at 50 °C

Heavy Atom Count

ICSC Number

0107

MeSH Entry Terms

Bromine;Bromine 79;Bromine-79

Monoisotopic Mass

157.83668g/mol

Odor

Suffocating odor;Bleachy, penetrating

Other Experimental

Valences: 1, 3, 5, 7; naturally occurring stable isotopes (mass numbers): 79 (50.69%), 81 (49.31%); dissociation energy (25 deg): 46.072 kcal; heat capacity at constant pressure (liq 20 °C): 18.089 cal/mol °C; oxidizing agent; less reactive than chlorine; Reduction potential: 1.065 V;Naturally occurring bromine isotopes - decay pathways[Table#1454];Bromine isotopes - decay pathways[Table#1455];Bromine in water, besides existing as the bromide, has the potential to form other species including bromate, depending on pH.;When bromine dissolves in water, it partially disproportionates into HOBr + H+ + Br-;Conversion factor: 1 ppm = 6.54 mg/cu m;The only nonmetallic element that is a liquid at standard conditions.;Thermal conductivity: 0.123 W/m K; specific conductivity: 9.10X10-12 (Ohm cm)-1; electrical resistivity: 6.5X10+10 Ohm cm at 25 °C; expansion coefficient: 0.0011 per °C from 20-30 °C; compressibility 6.2X10-6 at 20 °C from 0-10 MPa;Relative permittivity: 3.1484;Enthalpy of fusion: 10.57 kJ/mol;Vapor density: 5.51 (Air = 1); bromine reacts with aluminum reacts vigorously and explosively with potassium;Air odor threshold: 0.051 ppm (v/v); water odor threshold: 0.0063 ppm (w/v);Henry's law constant: 0.00132 atm-cu m/mole at 25 °C;Hydroxyl radical reaction rate constant = 4.50X10-11 cu cm/molecule-sec at 25 °C

Refractive Index

Index of refraction = 1.6083 at 20 °C; 1.6478 at 25 °C

Rotatable Bond Count

RTECS Number

EF9100000

Stability

Stable under recommended storage conditions.

UNII

SBV4XY874G

UN Number

1744;1744;1744;1744;1744

Vapor Density