One of the mysteries of the English language finally explained.
- old-fashioned term for ammonium chloride
- ‘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.’
- ‘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.’
- ‘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.’
Middle English: from Latin sal ammoniacus ‘salt of Ammon’ (see ammoniacal).
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