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HomeProduct name list(E)-1,4-Dibromobut-2-ene

(E)-1,4-Dibromobut-2-ene

  • CAS NO.:821-06-7
  • Empirical Formula: C4H6Br2
  • Molecular Weight: 213.9
  • MDL number: MFCD07783464
  • EINECS: 212-472-7
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-24 21:11:45
(E)-1,4-Dibromobut-2-ene Structural

What is (E)-1,4-Dibromobut-2-ene?

Chemical properties

white to light yellow crystal powde

The Uses of (E)-1,4-Dibromobut-2-ene

(2E)-1,4-Dibromo-2-butene, is used as a reagent in the preparation of diaminoalkenes though copper-mediated diamination reaction.

Synthesis Reference(s)

The Journal of Organic Chemistry, 36, p. 3324, 1971 DOI: 10.1021/jo00821a012

General Description

Crystals or white crystalline solid.

Air & Water Reactions

(E)-1,4-Dibromobut-2-ene may be sensitive to exposure to light and air. Insoluble in water.

Reactivity Profile

(E)-1,4-Dibromobut-2-ene is incompatible with strong oxidizers and strong bases.

Fire Hazard

(E)-1,4-Dibromobut-2-ene is probably combustible.

Purification Methods

Crystallise the dibromide from ligroin and/or distil it in a vacuum. [Beilstein 1 IV 79.]

Properties of (E)-1,4-Dibromobut-2-ene

Melting point: 48-51 °C(lit.)
Boiling point: 205 °C(lit.)
Density  1.9393 (estimate)
refractive index  1.5361 (estimate)
Flash point: 113°C
storage temp.  2-8°C
solubility  Chloroform (Slightly), Methanol (Slightly)
form  Crystals or Crystalline Powder
color  colorless to slightly brown
Water Solubility  slightly soluble
BRN  1719696
Stability: Light Sensitive
CAS DataBase Reference 821-06-7(CAS DataBase Reference)
NIST Chemistry Reference 2-Butene, 1,4-dibromo-, (E)-(821-06-7)
EPA Substance Registry System 2-Butene, 1,4-dibromo-, (2E)- (821-06-7)

Safety information for (E)-1,4-Dibromobut-2-ene

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
ghs
Skull and Crossbones
Acute Toxicity
GHS06
GHS Hazard Statements H301:Acute toxicity,oral
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 for (E)-1,4-Dibromobut-2-ene

InChIKey RMXLHIUHKIVPAB-OWOJBTEDSA-N

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