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Thorin (chemistry)

From Wikipedia, the free encyclopedia

Thorin
Structural formula of ((4E)-4-hydrazin-1-ylidene)-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
3D model (JSmol)
2957648
ChemSpider
ECHA InfoCard 100.020.903 Edit this at Wikidata
EC Number
  • 222-993-1
UNII
UN number 1557
  • 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 ☒N
    Key: ZQMPNLOZJUWHSA-UHFFFAOYSA-L ☒N
  • 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+;;
  • [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
C16H11AsN2O10S2
Molar mass 530.31 g·mol−1
Appearance Orange-yellow crystals
Melting point 300 °C (572 °F; 573 K)
Hazards
GHS labelling:
GHS06: Toxic
GHS09: Environmental hazard
Danger
H301, H331, H410
P261, P264, P270, P271, P273, P301+P310, P304+P340, P311, P321, P330, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
0
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

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]

References

  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.

External links

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This page was last edited on 4 January 2023, at 15:30
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