Thorin (chemistry)

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Thorin (chemistry)
Structural formula of ((4E)-4-hydrazin-1-ylidene)-thorin
CAS number 3688-92-4 (4E)-4-hydrazin-1-ylidene N
PubChem 6364518, 6537679 (4E)-4-hydrazin-1-ylidene
ChemSpider 5020708 (4E)-4-hydrazin-1-ylidene N
EC number 222-993-1
UN number 1557
Beilstein Reference 2957648
Jmol-3D images Image 1
Image 2
Molecular formula C16H11AsN2O10S2
Molar mass 530.32 g mol−1
Appearance Orange-yellow crystals
Melting point 300 °C (572 °F; 573 K)
R-phrases R23/25, R50/53
S-phrases S20/21, S28, S45, S60, S61
Main hazards Toxic (T), Dangerous for the environment (N)
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

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.


Analytical Chemistry, 51, 2293 (1979).

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