CAS 542-92-7: 1,3-Cyclopentadiene

Description: 1,3-Cyclopentadiene is a cyclic diene with the molecular formula C5H6. It is characterized by its two conjugated double bonds, which contribute to its reactivity and unique chemical properties. This colorless liquid has a distinctive odor and is known for its ability to undergo Diels-Alder reactions, making it a valuable intermediate in organic synthesis. The compound has a boiling point of approximately 42 °C and a melting point around -50 °C, indicating its volatility and low-temperature stability. 1,3-Cyclopentadiene is also notable for its tendency to dimerize at room temperature, forming dicyclopentadiene, which can be reversed by heating. It is soluble in organic solvents but insoluble in water. Due to its reactivity, it should be handled with care, as it can form explosive peroxides upon prolonged exposure to air. Overall, 1,3-cyclopentadiene is an important compound in the field of organic chemistry, particularly in the synthesis of various chemical products and materials.

Formula: C₅H₆

InChI: InChI=1S/C5H6/c1-2-4-5-3-1/h1-4H,5H2

InChI key: InChIKey=ZSWFCLXCOIISFI-UHFFFAOYSA-N

SMILES: C=1C=CCC1

Synonyms:

• Ciclopentadieno
• Cyclopenta-1,3-Diene
• Cyclopentadien
• Cyclopentadiene
• Pentole
• Pyropentylene
• R-Pentine

Dicyclopentadiene (stabilized with BHT) [precursor to Cyclopentadiene]

CAS: 542-92-777-73-6

• Formula: C₁₀H₁₂
• Purity: >97.0%(GC)
• Color and Shape: White or Colorless to Almost white or Almost colorless powder to lump to clear liquid
• Molecular weight: 132.21