qíng'ān​huà​gài

calcium cyanamide

  1. cyanogen
    (bound form) cyanogen; dicyanogen; a colorless, pungent, and highly toxic gas composed of carbon and nitrogen
  2. ān noun
    ammonia
    Chemical compound of nitrogen and hydrogen that is a colorless gas with a pungent smell; commonly used in fertilizers and refrigerants.
  3. huà affixparticle
    [...-ize]
    Suffix appearing after nouns or adjectives that expresses a transformation into a certain state or quality, meaning "-ize" or "-ization"
  4. calcium
    calcium; silvery-white chemical element with symbol Ca