What is the chemical formula for the acid used in boracic lint? 
Boracic lint: Boracic lint was a type of medical dressing made from surgical lint that was soaked in a hot, saturated solution of boracic acid and glycerine and then left to dry. Boric acid: Boric acid, also called hydrogen borate, boracic acid, orthoboric acid and acidum boricum , is a weak, monobasic Lewis acid of boron, which is often used as an antiseptic, insecticide, flame retardant, neutron absorber, or precursor to other chemical compounds. Boric acid:  It has the chemical formula HBO (sometimes written B(OH)), and exists in the form of colorless crystals or a white powder that dissolves in water.
HBO