Tiron

Names
Preferred IUPAC name Disodium 4,5-dihydroxybenzene-1,3-disulfonate
Identifiers
CAS Number	149-45-1
3D model (JSmol)	Interactive image
ChemSpider	8651
ECHA InfoCard	100.005.220
EC Number	205-741-5
PubChem CID	5111182
UNII	4X87R5T106
CompTox Dashboard (EPA)	DTXSID7043950
InChI InChI=1S/C6H6O8S2.2Na/c7-4-1-3(15(9,10)11)2-5(6(4)8)16(12,13)14;;/h1-2,7-8H,(H,9,10,11)(H,12,13,14);;/q;2*+1/p-2 Key: ISWQCIVKKSOKNN-UHFFFAOYSA-L InChI=1/C6H6O8S2.2Na/c7-4-1-3(15(9,10)11)2-5(6(4)8)16(12,13)14;;/h1-2,7-8H,(H,9,10,11)(H,12,13,14);;/q;2*+1/p-2 Key: ISWQCIVKKSOKNN-NUQVWONBAM
SMILES c1c(cc(c(c1O)O)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
Properties
Chemical formula	C6H4Na2O8S2
Molar mass	314.19 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tiron (trade name; systematic name disodium 4,5-dihydroxy-1,3-benzenedisulfonate) is a chemical compound used for its ability to form strong complexes with titanium and iron, as well as mixed compounds such as calcium titanium tiron.^[1]