👉 The term "phenylhydrazine" is a compound of the formula C10H15N, which has the following chemical properties: - It is a colorless, odorless gas that can be explosive if it comes into contact with water or in sunlight. - It has a strong smell and burns easily when lit. The term "phenylhydrazine" was first described by chemist Johann Christoph Friesen in 1789. It was later