7791-27-7 Usage
Chemical Properties
Colorless, mobile, very refractive, fum-
ing liquid.
Uses
Organic synthesis.
General Description
A colorless fuming liquid with a pungent odor. Irritates the eyes and mucous membranes. Corrosive to metals and tissue.
Air & Water Reactions
Fumes in air. Decomposes violently and exothermically in water or moist air to form sulfuric acid and hydrochloric acid [Merck, 11th ed. 1989].
Reactivity Profile
PYROSULFURYL CHLORIDE is strongly acidic. Incompatible with strong oxidizing agents, alcohols, amines and other bases. May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts [J. Haz. Mat., 1981, 4, 291]. Red and white forms of phosphorus react vigorously with the chloride.
Hazard
Decomposes violently with water to sulfu-
ric acid and hydrochloric acid. Corrosive to tissue.
Safety Profile
A very poisonous material that is also corrosive to the eyes, skin, and mucous membranes. Violent reaction with water. Vigorous reaction with phosphorus. When heated to decomposition it emits very toxic fumes of Cland SOx. See also CHLOROSULFONIC ACID.
Check Digit Verification of cas no
The CAS Registry Mumber 7791-27-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,9 and 1 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7791-27:
(6*7)+(5*7)+(4*9)+(3*1)+(2*2)+(1*7)=127
127 % 10 = 7
So 7791-27-7 is a valid CAS Registry Number.
InChI:InChI=1/Cl2O5S2/c1-8(3,4)7-9(2,5)6
7791-27-7Relevant articles and documents
Disulfuryl Dichloride ClSO2OSO2Cl: A Conformation and Polymorphism Chameleon
Moreno Betancourt, Angélica,Schwabedissen, Jan,Romano, Rosana M.,Della Védova, Carlos O.,Beckers, Helmut,Willner, Helge,Stammler, Hans-Georg,Mitzel, Norbert W.
, p. 10409 - 10421 (2018)
Disulfuryl dichloride ClSO2OSO2Cl was characterized by vibrational spectroscopy in the gaseous and liquid phase as well as in the Ar-matrix. By varying the temperature, certain bands could be assigned to several conformers. Gas-phase electron diffraction revealed a dominance of the anti-conformer at ambient temperature. The same conformation was found in the solid state. Via the in situ technique for crystallization, not less than four different modifications were identified. Among these different modifications, the structural parameters of the molecules remain relatively constant, but the aggregation pattern changes. Although the molecules aggregate by chlorine???oxygen contacts in each modification, the geometrical parameters of these interaction show significant differences and were evaluated and are in part inconsistent with the halogen bonding concept.
Photochemistry of SO2/CI2/O2 gas mixtures: Synthesis of the new peroxide CISO2OOSO2CI
Romano, Rosana M.,Vedova, Carlos O.Della,Beckers, Helmut,Willner, Helge
, p. 1906 - 1910 (2009/07/18)
Photochemically induced gas-phase reactions of CI2/SO 2/O2 mixtures at -78 °C have been investigated on a preparative scale. The sulfuryl chlorides CISO2(OSO2) nCI, n = 0,1, or 2, along wit
