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506-68-3

506-68-3 structural image
Product Name: Cyanogen bromide
Formula: CBrN
Synonyms: Bromine cyanide
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description Cyanogen bromide is a colorless to white crystalline solid with a penetrating odor. It is slightly soluble in water. It is gradually decomposed by water and very rapidly by acids to give off hydrogen bromide, a flammable and poisonous gas. Contamination with many materials can cause rapid decomposition of the material. It is toxic by inhalation of its vapors or by the hydrogen cyanide from decomposition or by ingestion. Toxic oxides of nitrogen are produced in fire involving this material. It is used in gold extraction, to make other chemicals, and as a fumigant.
Color/Form White hygroscopic needles
Odor Penetrating
Taste Bitter
Boiling Point 142 °F at 760 mmHg (EPA, 1998)
Melting Point 126 °F (EPA, 1998)
Flash Point Not Applicable. Not flammable. (USCG, 1999)
Solubility In water, soluble with hydrolysis
Density 2.015 at 68 °F (EPA, 1998) - Denser than water; will sink
Vapor Density 3.62 (EPA, 1998) - Heavier than air; will sink (Relative to Air)
Vapor Pressure 92 mmHg at 68 °F (EPA, 1998)
Stability/Shelf Life Cyanogen bromide is moderately endothermic ... & shows evidence of instability.
Autoignition Temperature Not Applicable. Not flammable. (USCG, 1999)
Decomposition ... If involved in a fire decomposes to produce toxic gases.
Corrosivity Corrodes most metals
Heat of Vaporization 33.82 kJ/mol
Kovats Retention Index 482 482
Other Experimental Properties Decomposes in the presence of water
Chemical Classes Toxic Gases & Vapors -> Cyanides

SAFETY INFORMATION

Signal word Danger
Pictogram(s)

Corrosion
Corrosives
GHS05

Skull and Crossbones
Acute Toxicity
GHS06

Environment
GHS09
GHS Hazard Statements H314:Skin corrosion/irritation
H400:Hazardous to the aquatic environment, acute hazard
Precautionary Statement Codes P260:Do not breathe dust/fume/gas/mist/vapours/spray.
P273:Avoid release to the environment.
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 105.92 g/mol
XLogP3 1.1
Hydrogen Bond Donor Count 0
Hydrogen Bond Acceptor Count 1
Rotatable Bond Count 0
Exact Mass 104.92141 g/mol
Monoisotopic Mass 104.92141 g/mol
Topological Polar Surface Area 23.8 Ų
Heavy Atom Count 3
Formal Charge 0
Complexity 31.3
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

Cyanogen bromide is a colorless to white crystalline solid with a penetrating odor. It is slightly soluble in water. It is gradually decomposed by water and very rapidly by acids to give off hydrogen bromide, a flammable and poisonous gas. Contamination with many materials can cause rapid decomposition of the material. It is toxic by inhalation of its vapors or by the hydrogen cyanide from decomposition or by ingestion. Toxic oxides of nitrogen are produced in fire involving this material. It is used in gold extraction, to make other chemicals, and as a fumigant.

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