発はっ火か点てん

noun

ignition point; flash point

Technical term for the lowest temperature at which a substance ignites in air. Used in chemistry, fire safety, and engineering contexts.

• ガソリンの発はっ火か点てんは約やく300度どです。

  The flash point of gasoline is about 300 degrees.

• この物ぶっ質しつは発はっ火か点てんが低ひくいので、取とり扱あつかいに注ちゅう意いが必ひつ要ようだ。

  This substance has a low ignition point, so it must be handled with care.