Mass of Substance = Volume of Substance x Density of Substance

Density of pyridine = 978.73 kg/m³

Density of pyridine in gram/ounce(uk) = 3704.896809654316

Mass of a Substance = 3704.896809654316 x 1

1 ounce(uk) of pyridine weighs 3704.896809654316 gram