Definition of sal ammoniac in English:

sal ammoniac

noun

  • old-fashioned term for ammonium chloride
    • ‘The dissolutive water is made from vitriol of Cyprus, saltpetre (potassium nitrate), Jamenous Allom, and sal ammoniac (ammonium chloride), and it became known as aqua regia, the king of waters.’
    • ‘They had made a chemical discovery while students in Edinburgh, discovering a way to make sal ammoniac, a chemical used in welding metal.’
    • ‘Upon burning, the dung produced acrid vapors and would leave behind a white residue which they called sal ammoniac, meaning salt of Ammon.’
    • ‘Wollaston paid careful attention to the waste solutions that remained after the precipitation of the platinum salt of sal ammoniac, being curious about the nature of any non-platinum components.’

Origin

Middle English: from Latin sal ammoniacus ‘salt of Ammon’ (see ammoniacal).

Pronunciation

sal ammoniac

/ˌsal əˈməʊnɪak/