White to orange yellowish powder.
A nitrated unsaturated aliphatic hydrocarbon and aldehyde. The unsaturated aliphatic hydrocarbons are generally much more reactive than the alkanes, which are saturated aliphatic hydrocarbons. Strong oxidizers may react vigorously with them. Reducing agents can react exothermically to release hydrogen gas. Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation.
SYMPTOMS: Symptoms of exposure to 2,4-Pentadienal, 5-(4-nitrophenyl)- in high doses (>700 mg/kg) may include neurotoxicity.
Flash point data for 2,4-Pentadienal, 5-(4-nitrophenyl)- are not available. 2,4-Pentadienal, 5-(4-nitrophenyl)- is probably combustible.
