The most common form of phosphoric acid is an 85% liquid solution; these solutions are colorless, nonvolatile and odorless.
It is a thick liquid, but still transferable. Even though phosphoric acid does not meet the strict meaning of a strong acid, the 85% solution is acidic enough to be harsh.

Pure phosphoric acid is a white crystal-like solid with a melting point of 42.35° C. When it is less dense, it is a colorless, viscous liquid, odorless with a density of 1.885 g/mL.

It is non-toxic and non-volatile in nature. The most commonly used phosphoric acid concentration is 85% in water.