Disulfur dibromide

Structural formula
General
Surname	Disulfur dibromide
other names	Dibromodisulfane
Molecular formula	S 2 Br 2
Brief description	dark red liquid
External identifiers / databases
CAS number 13172-31-1 EC number 236-119-1 ECHA InfoCard 100.032.821 PubChem 123296 Wikidata Q10880269
properties
Molar mass	223.94 g mol −1
Physical state	liquid
density	2.629 g cm −3
Melting point	−46 ° C
solubility	Decomposes in water Soluble in carbon disulfide , carbon tetrachloride and benzene
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Disulfur dibromide is an inorganic chemical compound of sulfur from the group of bromides .

Extraction and presentation

Disulfur dibromide can be obtained by reacting sulfur with bromine or disulfur dichloride with hydrogen bromide .

${\displaystyle \mathrm {2\ S+Br_{2}\longrightarrow S_{2}Br_{2}} }$

${\displaystyle \mathrm {S_{2}Cl_{2}+2\ HBr\longrightarrow S_{2}Br_{2}+2\ HCl} }$

properties

Disulfur dibromide is a dark red, oily liquid that does not wet the glass and decomposes with water to form hydrogen bromide, sulfur dioxide and sulfur. It dissociates into the elements when heated and can therefore only be distilled without decomposition in a high vacuum. In the solid state it has an orthorhombic crystal structure .

Individual evidence

1. ↑ ^{a b c d e f g h} Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 386.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ^ Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 702 ( limited preview in Google Book search).