Chem.
a white, crystalline, water-soluble, poisonous solid, NH 4 HF 2 , used chiefly for cleaning and sterilizing brewing and dairy equipment.
Chem.
a white, crystalline, water-soluble, poisonous solid, NH 4 HF 2 , used chiefly for cleaning and sterilizing brewing and dairy equipment.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012