POWDERS (אֲבָקָה, H86). The word is used in the Song of Solomon (3:6) in reference to the litter of Solomon, which is described as “perfumed with myrrh and frankincense, with all the fragrant powders of the merchant.” The “powders” were prob. perfumes, perhaps spices or some kind of incense.

International Standard Bible Encyclopedia (1915)

The "powders of the merchant" in So 3:6 were probably perfumes, as they are associated with myrrh and frankincense in the account of the festal procession of the litter of Solomon. They may have been some sweet-scented wood in powder, or else some form of incense.