1,3,4-thiadiazole-2,5-dithiol

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Structural formula
Structure of bismuthiol I
General
Surname 1,3,4-thiadiazole-2,5-dithiol
other names
  • 2,5-disulfanyl-1,3,4-thiadiazole
  • Bismuthiol I.
Molecular formula C 2 H 2 N 2 S 3
Brief description

yellow powder

External identifiers / databases
CAS number 1072-71-5
EC number 214-014-1
ECHA InfoCard 100.012.741
PubChem 2723630
Wikidata Q15632681
properties
Molar mass 150.25 g mol −1
Physical state

firmly

Melting point

168 ° C (decomposition)

solubility

soluble in alkalis

safety instructions
GHS labeling of hazardous substances
07 - Warning

Caution

H and P phrases H: 319
P: 305 + 351 + 338
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

1,3,4-thiadiazole-2,5-dithiol or bismuthiol I is a chemical compound that is used as a complexing agent for the detection of bismuth , copper , lead , antimony , palladium . The detection limits are below 5 mg / kg (Bi, Cu, Pb).

Individual evidence

  1. ↑ a b c Entry on 2,5-disulfanyl-1,3,4-thiadiazole. In: Römpp Online . Georg Thieme Verlag, accessed on January 17, 2014.
  2. ↑ a b c data sheet bismuthiol I from Sigma-Aldrich , accessed on January 17, 2014 ( PDF ).
  3. ^ AK Majumdar, MM Chakrabartty: Bismuthiol I as an analytical reagent . In: Fresenius' Journal for Analytical Chemistry . tape 165 , no. 2 , 1959, p. 100-105 , doi : 10.1007 / BF00451984 ( PDF ).