氢化氰 Traditional form: 氫化氰 Pinyin (reading): qīnghuàqíng Definitions: hydrocyanic acid hydrogen cyanide Characters: 氢 - ammonia 化 - to change, to convert, to reform; -ize 氰 - cyanogen; ethane dinitrile Traditional characters: 氫 - ammonia 化 - to change, to convert, to reform; -ize 氰 - cyanogen; ethane dinitrile