Physical Properties Of HNO3 by keypoint It is a fuming liquid with a sharp choking smell. It boil at 86°c and melts at -47°c. The denser of the pure acid is 1.52gcm3 It turns blue litmus paper red. Others are Viewing: Chemical Properties Of HNO3 TrioxoNitrate (V) Acid HNO3 Physical Properties of Chloride Physical Properties Of Oxygen Physical Properties Of NO Physical Properties of Ammonia Physical Properties of Sulphur