13172-31-1

Basic information

• Product Name: disulphur dibromide
• Synonyms: Disulphur dibromide; bromosulfanyl thiohypobromite
• CAS NO: 13172-31-1
• Molecular Formula: Br₂S₂
• Molecular Weight: 223.938
• EINECS: 236-119-1
• Mol File: 13172-31-1.mol
• Article Data: 3

Chemical Properties

• Density: 2.703g/cm³
• Refractive Index: 1.742
• CAS DataBase Reference: disulphur dibromide(CAS DataBase Reference)
• NIST Chemistry Reference: disulphur dibromide(13172-31-1)
• EPA Substance Registry System: disulphur dibromide(13172-31-1)

Safety Data

• Hazardous Substances Data: 13172-31-1(Hazardous Substances Data)

Usage

General Description

Disulfur dibromide, also known as sulfur dibromide, is a chemical compound composed of sulfur and bromine with the formula S2Br2. It is a yellow to reddish-brown liquid at room temperature and is primarily used as a reagent in organic synthesis. Disulfur dibromide is a strong electrophile and is known to react with a variety of organic compounds, such as alcohols, amines, and thiols, to form sulfur-containing products. It is also used in the production of dibromosulfurane, which is used as a disinfectant and as an intermediate in the synthesis of various organic compounds. Disulfur dibromide is known to be highly reactive and requires careful handling and storage due to its potential for releasing toxic and corrosive fumes.

Upstream product

• 7726-95-6 bromine 
• 7704-34-9 sulfur 
• 7719-12-2 phosphorus trichloride 
• 7783-06-4 hydrogen sulfide 
• 10025-67-9 disulfur dichloride 
• 10294-33-4 boron tribromide 
• 32026-93-0 bis{bis(trifluoromethyl)phosphoryl}disulfane 
• 7789-31-3 bromic acid 
• 558-13-4 carbon tetrabromide 
• 10035-10-6 hydrogen bromide 
• 28950-34-7 tetrasulfur tetranitride 
• 56582-06-0 bromo(trifluoromethyl)disulphane 
• 507-16-4 sulfurous dibromide 
• 7446-09-5 sulfur dioxide 

Downstream Products

• 7727-15-3 aluminium bromide 
• 13470-26-3 vanadium(III) bromide 
• 7783-06-4 hydrogen sulfide 
• 7789-42-6 cadmium(II) bromide 
• 7699-45-8 zinc dibromide 
• 10294-34-5 boron trichloride 
• 7704-34-9 sulfur 
• 10035-10-6 hydrogen bromide 
• 10025-67-9 disulfur dichloride 
• 7789-33-5 iodine(I) bromide 
• 13760-29-7 tetrathionic acid 
• 7732-18-5 water 
• 14265-45-3 sulfite^(2-) 
• 7783-60-0 sulfur tetrafluoride 

Relevant articles and documents

Microwave Spectrum for Bromo(sulfido)boron, BrBS

The rotational spectrum of the transient molecule bromo(sulfido)boron, BrB=S, has been observed.The molecule was produced by high-temperature reaction between gaseous dibromo disulphide, Br2S2, and crystalline boron chips at ca. 1000 deg C, and was studied by microwave spectroscopy between 26.5 and 40 GHz.The spectrum is that of a linear molecule.Ground-state rotation, distortion and quadrupole coupling constants have been obtained for 10 of the 12 isotopic variants in natural abundance.A wealth of spectroscopic data has been obtained which has allowed an extremely detailed structure analysis to be performed.The resulting bond lengths are ρs(BrB) = 1.831(2) Angstroem and ρs(B=S) = 1.608(2) Angstroem.Transitions due to vibrationally excited states have also been measured and analysed to yield a range of vibration-rotation parameters.

Crystal Structures of Compounds A2X2 (A = S, Se; X = Cl, Br)

The crystal structures of compounds A2X2 (A = S, Se; X = Cl, Br) contain molecules X-A-A-X with dihedral angles between 83.9 deg and 87.4 deg.Three different types of molecular packing are realized: S2Cl2, S2Br2 (α-Se2Br2) and β-Se2Br2(Se2Cl2).Details of molecular geometries as well as crystal structures are discussed. - Keywords: Sulfur(I) Halides, Selenium(I) Halides, Crystal Structure