Thorin_(chemistry)

Thorin
Names
	Preferred IUPAC name Disodium 3-hydroxy-4-[(2-arsonophenyl)diazenyl]naphthalene-2,7-disulfonate
	Systematic IUPAC name Disodium 4-[2-(2-arsonophenyl)hydrazin-1-ylidene]-3-oxo-3,4-dihydronaphthalene-2,7-disulfonate
	Other names Disodium 4-[2-(2-arsonophenyl)hydrazin-1-ylidene]-3-oxonaphthalene-2,7-disulfonate; 2-(3,6-Disulfo-2-hydroxy-1-naphthylazo)benzenearsonic acid disodium salt; Thoron; Thoronol
Identifiers
CAS Number	3688-92-4 (4E)-4-hydrazin-1-ylidene ;
3D model (JSmol)	Interactive image; Interactive image;
Beilstein Reference	2957648
ChemSpider	5020708 (4E)-4-hydrazin-1-ylidene ; 4895471 ;
ECHA InfoCard	100.020.903
EC Number	222-993-1;
PubChem CID	77269; 6537679 (4E)-4-hydrazin-1-ylidene;
UNII	LFP7CNK4M5 ;
UN number	1557
CompTox Dashboard (EPA)	DTXSID20893911 ;
	InChI InChI=1S/C16H13AsN2O10S2.2Na/c20-16-14(31(27,28)29)8-9-7-10(30(24,25)26)5-6-11(9)15(16)19-18-13-4-2-1-3-12(13)17(21,22)23;;/h1-8,18H,(H2,21,22,23)(H,24,25,26)(H,27,28,29);;/q;2+1/p-2 Key: ZQMPNLOZJUWHSA-UHFFFAOYSA-L ; Key: DCSRPHQBFSYJNN-GJLVVKPQBS; InChI=1/C16H13AsN2O10S2.2Na/c20-16-14(31(27,28)29)8-9-7-10(30(24,25)26)5-6-11(9)15(16)19-18-13-4-2-1-3-12(13)17(21,22)23;;/h1-8,20H,(H2,21,22,23)(H,24,25,26)(H,27,28,29);;/q;2+1/p-2/b19-18+;;;
	SMILES [Na+].[Na+].O[As](O)(=O)c3ccccc3/N=N/c1c2ccc(cc2cc(c1O)S([O-])(=O)=O)S([O-])(=O)=O; [Na+].[Na+].O[As](O)(=O)C1=CC=CC=C1NN=C1C(=O)C(=CC2=C1C=CC(=C2)S([O-])(=O)=O)S([O-])(=O)=O;
Properties
Chemical formula	C16H11AsN2O10S2
Molar mass	530.31 g·mol−1
Appearance	Orange-yellow crystals
Melting point	300 °C (572 °F; 573 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H410
Precautionary statements	P261, P264, P270, P271, P273, P301+P310, P304+P340, P311, P321, P330, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 0 0
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Thorin (chemistry)

Chemical compound

Thorin (also called thoron or thoronol) is an indicator used in the determination of barium, beryllium, lithium, uranium and thorium compounds. Being a compound of arsenic, it is highly toxic.^[1]

Quick Facts Names, Identifiers ...

Share this article:

This article uses material from the Wikipedia article Thorin_(chemistry), and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.

[1] [1]
Haartz, J. C.; Eller, Peter M.; Hornung, Richard W. (1 November 1979). "Critical parameters in the barium perchlorate/Thorin titration of sulfate". Analytical Chemistry. 51 (13): 2293–2295. doi:10.1021/ac50049a056.

[1]

Thorin_(chemistry)

Thorin (chemistry)

References

External links

Share this article: