Osazones are highly coloured and crystalline compounds. Osazones are readily distinguished.
*Maltosazone (from maltose) forms petal-shaped crystals.
*Lactosazone (from lactose) forms powder puff-shaped crystals.
*Galactosazone (from galactose) forms rhombic-plate shaped crystals.
*Glucosazone (from glucose, fructose or mannose) forms broomstick or needle-shaped crystals.