also: ほうさん
boric acid
Chemical compound H₃BO₃; used as an antiseptic, insecticide, and in various industrial applications.
Boric acid is sometimes used for cockroach extermination.
ホウ酸水でうがいをすると喉の痛みが和らぐと言われている。
Gargling with boric acid solution is said to soothe a sore throat.
metaboric acid
orthoboric acid
boric acid dumpling; poisonous cockroach bait
Standard spelling using katakana for ホウ and kanji for 酸.
Hiragana variant of the katakana portion; less common but still used.
Kanji spelling using 硼 (boron); rare and mostly seen in older or technical contexts.
From ホウ (boron) + 酸 (acid). The katakana portion reflects the element name, and 酸 is the standard suffix for acids in Japanese chemical terminology.