オルトホウ酸さんMeanings1nounorthoboric acidchemistryChemical term for H₃BO₃, also known as boric acid. Used in chemistry and industrial contexts.オルトホウ酸さんは防ぼう腐ふ剤ざいとして使つかわれることがある。Orthoboric acid is sometimes used as a preservative.
