Cyclopentadiene

C₅H₆CAS 542-92-766.10 g/mol

Open in Covalent MOL file

Alkene

Properties

Molecular formula: C₅H₆
Molar mass: 66.10 g/mol
Exact mass: 66.0470 Da
Density: 0.8021 g/mL (at 20 °C)
Melting point: −85 °C
Boiling point: 41.5–42.1 °C
Water solubility: 1.8 g/L (25 °C)
logP: 1.50Crippen estimate
Polar surface area: 0.0 Å²
H-bond donors / acceptors: 0 / 0
Rotatable bonds: 0

Hazards

Danger

H225 Highly Flammable liquid and vapor28.2% of notifiers
H226 Flammable liquid and vapor71.8% of notifiers
H301+H311 Toxic if swallowed or in contact with skin28% of notifiers
H301 Toxic if swallowed92.2% of notifiers
H311 Toxic in contact with skin29.6% of notifiers
H312 Harmful in contact with skin62.6% of notifiers
H315 Causes skin irritation100% of notifiers
H319 Causes serious eye irritation100% of notifiers
H332 Harmful if inhaled87.6% of notifiers
H335 May cause respiratory irritation100% of notifiers

Aggregated from 372 ECHA notifications, via PubChem; a share says how many notifiers assign that statement.

Precautionary statements

P210, P233, P240, P241, P242, P243, P261, P262, P264, P264+P265, P270, P271, P280, P301+P316, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P316, P317, P319, P321, P330, P332+P317, P337+P317, P361+P364, P362+P364, P370+P378, P403+P233, P403+P235, P405, P501