
1) Metal rod, used as a hook 2) Shaped metal bar
Found on
https://www.crosswordclues.com/clue/tiron

Tiron is the trade name for the chemical compound 4,5-Dihydroxy-1,3-benzenedisulfonic acid disodium salt, CAS number 149-45-1. The name derives from it ability to form strong complexes with Titanium and iron. Was an incorrect re-direct to Thiron-Gardais ...
Found on
http://en.wikipedia.org/wiki/Tiron

<chemical> 4,5-dihydroxy-1,3-benzenedisulfonic acid disodium salt. A colourimetric reagent for iron, manganese, titanium, molybdenum, and complexes of zirconium. ... Pharmacological action: indicators and reagents. ... Chemical name: 1,3-Benzenedisulfonic acid, 4,5-dihydroxy-, disodium salt ... (12 Dec 1998) ...
Found on
http://www.encyclo.co.uk/local/20973
No exact match found.