Question: What is the chemical formula for the acid used in boracic lint? 
Sentence (from "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.
Relevant evidence: Yes