This molecule's airborne concentration is assayed under acidic conditions by a test that produces a red-purple color when this molecule reacts with chromotropic acid.
In the presence of ammonium acetate, this molecule reacts with pentane-2,4-dione to produce a yellow product. This molecule's airborne concentration is assayed under acidic conditions by a test that produces a red-purple color when this molecule reacts with chromotropic acid. Under basic conditions, this molecule and a trichlorinated derivative are the major catalysts for the reaction of nitrites and secondary amines to form N-nitrosamines. (*) Fish imported from Vietnam often contain illegally high levels of this molecule, which is the major indoor air pollutant found in composite wood. This molecule cross-links a protein to DNA in the first step of ChIP. With urea, this molecule forms a plastic used in now-illegal foam insulation. Silver catalyzes the industrial conversion of methanol to this molecule, which reacts with Grignard reagents to produce primary alcohols. For 10 points, name this common histological fixative, the simplest aldehyde.
In the presence of ammonium acetate, this molecule reacts with pentane-2,4-dione to produce a yellow product.
formaldehyde [or methanal; accept formalin; accept CH2O or equivalents; do not accept methanol]