Carbon disulfide CAS

CARBON DISULFIDE. [CAS 75-15-0. Carbon disulfide (carbon bisulfide, dithiocarbonic anhydride), CS . is a toxic, dense liquid of high volatility and flammability. It is an important industrial chemical and its properties arc well established. Low concentrations of carbon disulfide naturally discharge into the atmosphere from certain soils, and carbon disulfide has been delected in mustard nil. volcanic gases, and crude peiroleum. Carbon disulfide is an unintentional by-produci of many combustion and high temperature industrial processes where sulfur compounds are present. 

Common Name Carbon disulfide Synonym carbon disulphide Chemical Name carbon disulfide CAS Registry No 75-15-0 Molecular Formula CS2 Molecular Weight 76.141 Melting Point (°C) ... 

Jones-Price C, Wolkowski-Tyl R, Marr MC, et al. 1984b. Teratologic evaluation of carbon disulfide (CAS No. 75-15-0) administered to New Zealand white rabbits on gestational days 6 through 19. 

A chemical that is harmful to a developing embryo—a developmental toxin. A teratogen (see below) is an embryotoxin that causes physical defects in a developing fetus. Example carbon disulfide, CAS 75-15-0... 

Pure adiponitrile is a colorless Hquid and has no distinctive odor some properties are shown in Table 5. It is soluble in methanol, ethanol, chloroalkanes, and aromatics but has low solubiUty in carbon disulfide, ethyl ether, and aUphatic hydrocarbons. At 20°C, the solubiUty of adiponitrile in water is ca 8 wt % the solubiUty increases to 35 wt % at 100°C. At 20°C, adiponitrile dissolves ca 5 wt % water. 

Chemica.1 Properties. Reviews of carbonyl sulfide chemistry are available (18,23,24). Carbonyl sulfide is a stable compound and can be stored under pressure ia steel cylinders as compressed gas ia equiUbrium with Hquid. At ca 600°C carbonyl sulfide disproportionates to carbon dioxide and carbon disulfide at ca 900°C it dissociates to carbon monoxide and sulfur. It bums with a blue flame to carbon dioxide and sulfur dioxide. Carbonyl sulfide reacts... 

When the Claus reaction is carried out in aqueous solution, the chemistry is complex and involves polythionic acid intermediates (105,211). A modification of the Claus process (by Shell) uses hydrogen or a mixture of hydrogen and carbon monoxide to reduce sulfur dioxide, carbonyl sulfide, carbon disulfide, and sulfur mixtures that occur in Claus process off-gases to hydrogen sulfide over a cobalt molybdate catalyst at ca 300°C (230). 

ZrSe [12166-53-9] and ZrTe [39294-10-5] (138). Zirconium disulfide [12039-15-5] is made from the elemental powders and by the action of carbon disulfide on zirconium oxide above 1200°C (139) some ZrOS [12164-95-3] is usually also obtained. The higher sulfides disproportionate at ca 700°C synthesis reactions at 900—1000°C with S Zr ratios between 0.2 and 2.3 produced crystals that were identified as Zr S2 [12595-12-9] ... 

Trinidad asphalt has a relatively uniform composition of 29% water and gas, 39% bitumen soluble in carbon disulfide, 27% mineral matter on ignition, and 5% bitumen that remains adsorbed on the mineral matter. Refining is essentially a process of dehydration by heating the cmde asphalt to ca 165°C. The refined product averages 36% mineral ash with a penetration at 25°C of about 2 (0.2 mm), a softening point (ring and ball method) of 99°C, a flash point (Cleveland open cup) of 254°C, a sulfur content of 3.3%, and a saponification value of 45 mg KOH/g. The mineral matter typically contains... 

Oxidative decomplexation of iron acyl complexes in the presence of alcohols provides the corresponding carboxylates 7. Usual conditions employ ca. 7% alcohol in dichloromethane or dichloromethane/carbon disulfide as the solvent with bromine as the oxidant. 

Niepce s Incendiary Composition. Contained benz, petroleum or carbon disulfide with a small piece of metallic potassium or Ca phosphate as igniter. Potassium was later replaced with metallic sodium Ref Daniel (1902), 153... 

A fritted polypropylene column is charged with Wang resin-bound l,3-diamino-2,2-dimethylpropane (note 1) (0.60 g, ca. 0.6 mmol), and the resin is swollen for lmin in 1,2-dichloro-ethane (7.0 mL note 2). The solvent is filtered off 1,2-di-chloroethane (5.2 mL), carbon disulfide (0.8 mL), and... 

Carbon disulfide is isovalent to carbon dioxide and it also has a bent monomer anion. While gas-phase CO2 has negative EAg of —0.6 eV [24], for CS2, EAg is +0.8 eV [34]. Despite this very different electron affinity, Gee and Freeman [34] observed long-lived electrons in CS2 (with lifetime > 500 psec) with mobility ca. 8 times greater than that of solvent cations. Over time, these electrons converted to secondary anions whose mobility was within 30% of the cation mobility. Between 163 and 500 K, the two ion mobilities scaled linearly with the solvent viscosity, as would be expected for regular ions. Of course, Gee and Freeman s identification of the long-lived high-mobility solvent anions as electron is just a manner of speech Obviously, quasifree or solvated electrons cannot survive for over a millisecond in a positive-EAg liquid. 

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