Boric acid, sidoo kale loo yaqaan hydrogen borate, boracic acid, orthoboric acid iyo acidum boricum, waa daciif, monobasic Lewis acid of boron, taas oo badanaa loo isticmaalo antiseptic, cayayaanka, ololka celiya, nuugista nudaha, ama horudhaca kiimikada kale. Waxay leedahay qaaciddada kiimikada ee H3BO3 (mararka qaarna qoran B (OH) 3), waxayna ku jirtaa qaab kristantar aan midab lahayn ama budo cad oo ku milma biyaha. Markaad u dhacdo sidii macdan, waxaa loo yaqaan 'sassolite'.