7791-25-5 Usage
Chemical Description
Different sources of media describe the Chemical Description of 7791-25-5 differently. You can refer to the following data:
1. Sulfuryl chloride is a reagent used in the synthesis of compound 3.
2. Sulfuryl chloride is a reactive compound that can be used to convert thiols to sulfenyl chlorides.
Uses
Different sources of media describe the Uses of 7791-25-5 differently. You can refer to the following data:
1. Sulfuryl chloride is used as a chlorinating and sulfonating agent in organic synthesis. It also is used in military gas.
2. Sulfuryl Chloride is a reagent used in the synthesis of catecholic flavonoids as telomerase inhibitors. It is also used to prepare (pyrenebutanamido)thiourea derivs. for anion PET chemosensors.
3. Chlorinating and sulfonating or chlorosulfonating agent in organic syntheses, e.g., in the manufacture of chlorophenol and chlorothymol. Has been used in war gas formulations.
Preparation
Sulfuryl chloride is prepared by reacting sulfur dioxide with chlorine in the presence of a catalyst, such as activated carbon or camphor. Both the gases should be in dry form and passed over the catalyst:
SO2 + Cl2 → SO2Cl2
Also, the compound can be obtained by heating chlorosulfonic acid in the presence of a catalyst:
2ClSO3H → SO2Cl2 + H2SO4
Toxicity
Sulfuryl chloride is highly corrosive to skin, eyes and mucous membranes.
Reactions with alkalies, lead dioxide, phosphorus and dimethyl sulfoxide can
be violent.
Chemical Properties
A colorless to light yellow fuming liquid. Pungent acrid odor.
Physical properties
Colorless, mobile liquid; turns yellow on standing; very pungent odor; refractive index 1.4437 at 20°C; density 1.667 g/mL at 20°C; vapors heavier than air, vapor density 4.7 (air=1); melts at -51°C; boils at 69.4°C; sparingly soluble in water, decomposing slowly to sulfuric and hydrochloric acids; forms a hydrate SO2Cl2?15H2O with ice-cold water; miscible with benzene, toluene, chloroform, carbon tetrachloride, and glacial acetic acid; decomposed by alkalies (violent reaction occurs).
General Description
A colorless fuming liquid with a pungent odor. Very toxic by inhalation. Corrosive to metals and tissue.
Reactivity Profile
Sulfuryl chloride reacts exothermically with water. Incompatible with strong oxidizing agents, alcohols, amines. Reacts violently with bases. Attacks many metals. Can react explosively with lead dioxide [Mellor 10:676 1946-47]. 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].
Health Hazard
Vapors cause severe irritation of eyes and respiratory system. Liquid burns eyes and skin. If ingested, can cause severe burns of mouth and stomach.
Fire Hazard
Behavior in Fire: Toxic and irritating gases are generated.
Safety Profile
A corrosive irritant to skin, eyes, and mucous membranes. Questionable carcinogen with experimental tumorigenic data. Can explode with Pb02. Will react with water or steam to produce heat and toxic and corrosive fumes. Incompatible with alkalies, diethyl ether, dimethyl sulfoxide,dinitrogen pentaoxide, lead dioxide, phosphorus. When heated to decomposition it emits highly toxic fumes of Cland SOx. See also SULFURIC ACID and HYDROCHLORIC ACID, which are formed upon hydrolysis.
Potential Exposure
Sulfuryl chloride is used to make other chemicals, including chlorophenol and chlorothymol, disinfectants, pharmaceuticals, phosphate insecticides, heterocyclic herbicides, fungicides, dyestuffs, and some plastics; as a solvent and catalyst; as a chlorosulfonating agent in organic synthesis. Also used as a dehydrating agent, as cathode material and in lithium batteries; as a wool treatment to prevent shrinkage.
Shipping
UN1834 Sulfuryl chloride, Hazard Class: 6.1; Labels: 6.1-Poison Inhalation Hazard; 8-Corrosive material; Inhalation Hazard Zone A. STN: 4930260; Sulfuryl chloride.
Incompatibilities
Water and air reactive. When spilled in water, hydrogen chloride, sulfur dioxide and sulfuric acid are produced. Forms corrosive mixture with air (NFPA Fire Rating: 0). Reacts exothermically with moisture in air, water or steam, releasing heat and yielding sulfuric acid and HCl vapors. Reacts violently with bases, amines, amides, inorganic hydroxides; alkalis, alkali metals, dimethyl sulfoxide, dinitrogen pentoxide, lead dioxide (explosive reaction); N-methylformamide, red phosphorus. Reacts, possibly violently, with oxidizers, organic substances, strong acids, alcohols, amines, ethers e.g., diethyl ether, diisopropyl ether, especially if trace amounts of metal salts are present); glycols, peroxides. Attacks metals in the presence of moisture, forming flammable hydrogen gas. Acid formed by reaction with water can be neutralized by limestone, lime, or soda ash.
Waste Disposal
Wear nitrile rubber gloves, laboratory coat, eye protection and, if necessary, a SCBA. Cover the spill with a 1:1:1 mixture by weight of sodium carbonate or calcium carbonate, clay cat litter (bentonite) and sand. When the sulfuryl chloride has been absorbed, scoop the mixture into a plastic pail of cold water. Allow to stand for 24 hours. Test the pH of the solution and neutralize if necessary with sodium carbonate. Decant the solution to the drain flushing with 50 times its volume of water. Treat the solid residue as normal refuse.
Check Digit Verification of cas no
The CAS Registry Mumber 7791-25-5 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 5 respectively.
Calculate Digit Verification of CAS Registry Number 7791-25:
(6*7)+(5*7)+(4*9)+(3*1)+(2*2)+(1*5)=125
125 % 10 = 5
So 7791-25-5 is a valid CAS Registry Number.
InChI:InChI=1/Cl2O2S/c1-5(2,3)4
7791-25-5Relevant articles and documents
Production and infrared absorption spectrum of ClSO2 in matrices
Bahou, Mohammed,Chen, Shih-Fung,Lee, Yuan-Pern
, p. 3613 - 3619 (2000)
A new species, ClSO2, is produced and identified with infrared (IR) absorption spectra when an argon or krypton matrix containing Cl2 and SO2 is irradiated with laser emission at 355 nm. Lines at 1311.0, 1309.6, 1099.8, 1098.2, 497.7, and 455.8 cm-1 (or 1309.5, 1098.5, 497.0, and 454.2 cm-1) are assigned to ClSO2 isolated in solid Ar (or Kr). Assignments of IR absorption lines are based on results of 34S and 18O isotopic substitution (in solid Kr) and theoretical calculations. Theoretical calculations using density-functional theories (B3LYP and B3P86 with an aug-cc-pVTZ basis set) were performed to predict the geometry, energy, vibrational frequencies, and infrared intensities of possible isomers of ClSO2: (pyramidal) ClSO2, cis-ClOSO, (nonplanar) ClOSO, and cis-ClSOO. Results predicted for pyramidal ClSO2 agree with observed experimental data. This is the first identification of ClSO2, which is presumably an important intermediate during photolysis of Cl2SO2 and in the reaction of Cl with SO2, especially at low temperatures. In addition to ClSO2, irradiation of the Cl2/SO2/Ar matrix sample with laser light at 308 nm produces Cl2SO2. Possible mechanisms of formation are discussed.
NOVEL CATALYTIC SYSTEMS FOR THE RING-OPENING (CO)POLYMERIZATION OF LACTONES
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, (2011/04/14)
The present invention relates to the use of a system composed of a base and of a sulphonamide, as a catalyst for the ring-opening (co)polymerization of lactones. The present invention also relates to novel sulphonamides and to a process for the ring-opening (co)polymerization of lactones comprising the use of sulphonamides in combination with a base as a catalytic system.
Sulphonamido-substituted bridged bicycloalkyl derivatives
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, (2008/06/13)
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