[3] Crystals of boron phosphide were synthesized by Henri Moissan as early as 1891.

[4] Pure BP is almost transparent, n-type crystals are orange-red whereas p-type ones are dark red.

[5] BP is not attacked by acids or boiling aqueous alkali water solutions.

[5] BP is known to be chemically inert and exhibit very high thermal conductivity.

[2] Some properties of BP are listed below: