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Benzyl bromide

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Benzyl bromide Basic information
Benzyl bromide Chemical Properties
  • Melting point:-3 °C
  • Boiling point:198-199 °C(lit.)
  • Density 1.44 g/mL at 20 °C
  • vapor density 5.8 (vs air)
  • vapor pressure 0.5 hPa (20 °C)
  • refractive index n20/D 1.575(lit.)
  • Flash point:188 °F
  • storage temp. Store below +30°C.
  • solubility Miscible with benzene, carbon tetrachloride, ethanol and ether.
  • form Liquid
  • color Clear colorless to yellow
  • OdorVery sharp, pungent, like tear gas.
  • Sensitive Moisture Sensitive/Light Sensitive
  • Merck 14,1128
  • BRN 385801
  • Stability:Stable. Combustible. Incompatible with strong oxidizing agents.
  • CAS DataBase Reference100-39-0(CAS DataBase Reference)
  • NIST Chemistry ReferenceBenzene, (bromomethyl)-(100-39-0)
  • EPA Substance Registry SystemBenzyl bromide (100-39-0)
Safety Information
  • Hazard Codes Xi
  • Risk Statements 36/37/38
  • Safety Statements 39-2
  • RIDADR UN 1737 6.1/PG 2
  • WGK Germany 2
  • RTECS XS7965000
  • 9-19-21
  • TSCA Yes
  • HS Code 2903 99 80
  • HazardClass 6.1
  • PackingGroup II
  • Hazardous Substances Data100-39-0(Hazardous Substances Data)
  • Toxicitydns-esc 1300 mmol/L ZKKOBW 92,177,78
Benzyl bromide Usage And Synthesis
  • Chemical PropertiesClear light amber liquid
  • Chemical PropertiesBenzylbromide is a combustible, colorless to yellow liquid with a pleasant odor. Molecular
  • UsesMaking foaming and frothing agents, organic synthesis.
  • DefinitionChEBI: A member of the class of benzyl bromides that is toluene substituted on the alpha-carbon with bromine.
  • Synthesis Reference(s)Journal of the American Chemical Society, 95, p. 3412, 1973 DOI: 10.1021/ja00791a072
    Tetrahedron Letters, 29, p. 707, 1988 DOI: 10.1016/S0040-4039(00)80190-2
    The Journal of Organic Chemistry, 51, p. 929, 1986 DOI: 10.1021/jo00356a032
  • General DescriptionA colorless liquid with an agreeable odor. Toxic by inhalation and by skin absorption. Benzyl bromide is slightly soluble in water and denser than water (density 1.44 g / cm3 (Aldrich)). A lachrymator. Corrosive to metals and tissue.
  • Air & Water ReactionsSensitive to exposure to light and moisture. Slightly soluble in water.
  • Reactivity ProfileBenzyl bromide reacts with water, alcohols, common metals (except nickel and lead), bases, amines and oxidizing agents. . Benzyl bromide stored over activated 4A molecular sieve burst a bottle due to condensation-polymerization reaction with generation of HBr gas, [Chem. Eng. News, 1979, 57(12), 74].
  • HazardHighly toxic. Corrosive to skin and tissue. A lachrymator.
  • Health HazardInhalation causes irritation of nose and throat; severe exposure may cause pulmonary edema. Vapors cause severe eye irritation; liquid can burn eyes. Skin contact causes irritation. Ingestion causes irritation of mouth and stomach.
  • Chemical ReactivityReactivity with Water Reacts slowly generating hydrogen bromide (hydrobromic acid); Reactivity with Common Materials: Decomposes rapidly in the presence of all common metals except nickel and lead, liberating heat and hydrogen bromide; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Rinse with sodium bicarbonate or lime solution; Polymerization: Polymerizes with evolution of heat and hydrogen bromide when in presence with all common metals except nickel and lead; Inhibitor of Polymerization: None.
  • Safety ProfileIntensely irritating and corrosiveto skin, eyes, and mucous membranes. Large doses causecentral nervous system depression. Mutation datareported. Reaction with molecular sieve produces toxichydrogen bromide gas.
  • Potential ExposureIt is used as a chemical intermediate; in organic syntheses; as a foaming and frothing agent.
  • ShippingUN1737 Benzyl Bromide, Hazard class: 6.1; Labels: 6.1—Poisonous materials, 8—Corrosive material.
  • Purification MethodsWash benzyl chloride with conc H2SO4 (CARE), water, 10% Na2CO3 or NaHCO3 solution, and again with water. Dry it with CaCl2, Na2CO3 or MgSO4 and fractionally distil it in the dark, under reduced pressure. It has also been thoroughly degassed at 10-6 mm and redistilled in the dark. This gives material with max (MeCN): 226nm ( 8200) [Mohammed & Kosower J Am Chem Soc 93 2709 1971]. [Beilstein 5 IV 829.] Handle in a fume cupboard, extremely LACHRYMATORY.
  • IncompatibilitiesMay form explosive mixture with air. Contact with water forms hydrogen bromide and benzyl alcohol. Incompatible with strong oxidizers, bases, magnesium. Attacks metals, except nickel and lead, in the presence of moisture.
  • Waste DisposalPour into vermiculite, sodium bicarbonate, or a sand-soda ash mixture and transfer to paper boxes, then to an open incinerator. Alternatively, mix Benzyl Bromide 417 with flammable solvent and spray into incinerator equipped with after burner and alkali scrubber.
Benzyl bromide Preparation Products And Raw materials
Benzyl bromide(100-39-0)Related Product Information
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