Ahmad Ibn Imad ul-din
Encyclopedia
Aḥmad ibn ‘Imād al-Dīn, Ahmad ibn Imad ad-Din was a Persian physician and alchemist. He was probably from Nishapur
Nishapur
Nishapur or Nishabur , is a city in the Razavi Khorasan province in northeastern Iran, situated in a fertile plain at the foot of the Binalud Mountains, near the regional capital of Mashhad...

 in the 11th century.

He was the author of an alchemical treatise titled On the Art of the Elixir (or Fi sina‘at al-iksir) which is preserved in the National Library of Medicine.

No other copy has been identified, and the author is not listed in the published bibliographies of Islamic writers on alchemy
Alchemy
Alchemy is an influential philosophical tradition whose early practitioners’ claims to profound powers were known from antiquity. The defining objectives of alchemy are varied; these include the creation of the fabled philosopher's stone possessing powers including the capability of turning base...

. He wrote the alchemical treatise titled On the Art of the Elixir (or Fi sina‘at al-iksir), in which he describes various Chemical Reaction
Chemical reaction
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Chemical reactions can be either spontaneous, requiring no input of energy, or non-spontaneous, typically following the input of some type of energy, such as heat, light or electricity...

s.

The manuscript copy is undated, but appears to be of the 17th or 18th century. In it, there is extensive marginalia giving citations from Jābir ibn Hayyān.
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