Search results
Results From The WOW.Com Content Network
Phosgene was first deployed as a chemical weapon by the French in 1915 in World War I. [24] It was also used in a mixture with an equal volume of chlorine, with the chlorine helping to spread the denser phosgene. [25] [26] Phosgene was more potent than chlorine, though some symptoms took 24 hours or more to manifest.
Phosgene oxime, or CX, is an organic compound with the formula Cl 2 C=N−O H. It is a potent chemical weapon , specifically a nettle agent . The compound itself is a colorless solid, but impure samples are often yellowish liquids.
John Davy FRS FRSE (24 May 1790 – 24 January 1868) was a Cornish doctor, amateur chemist, brother of the noted chemist Sir Humphry Davy, and cousin of Edmund Davy.. During his career, Davy discovered phosgene, silicon tetrafluoride, and concluded that chlorine was an element.
Acetyl chloride was first prepared in 1852 by French chemist Charles Gerhardt by treating potassium acetate with phosphoryl chloride. [4]Acetyl chloride is produced in the laboratory by the reaction of acetic acid with chlorodehydrating agents such as phosphorus trichloride (PCl 3), phosphorus pentachloride (PCl 5), sulfuryl chloride (SO 2 Cl 2), phosgene, or thionyl chloride (SOCl 2).
It behaves like phosgene, to which it cracks thermally: OC(OCCl 3) 2 ⇌ 3 OCCl 2. Alcohols are converted to carbonates. Primary and secondary amines are converted to ureas and isocyanates. [6] [7] [9] [10] Triphosgene has been used to synthesize chlorides. [8] Some Alkyl chlorides are prepared by treating alcohols with a mixture of triphosgene ...
Diphosgene converts to phosgene upon heating or upon catalysis with charcoal. It is thus useful for reactions traditionally relying on phosgene. For example, it convert amines into isocyanates, secondary amines into carbamoyl chlorides, carboxylic acids into acid chlorides, and formamides into isocyanides. Diphosgene serves as a source of two ...
The PH helmet was used throughout early 1916 by British troops in which was designed to be tucked under the shirt of the wearer. The masks were an evolution of the P Helmet, and were effective against phosgene gas by adding hexamine to sodium phenate solution which acted as an absorbent to the phosgene gas. [7]
Typically, CSCl 2 is prepared in a two-step process from carbon disulfide.In the first step, carbon disulfide is chlorinated to give trichloromethanesulfenyl chloride (CCl 3 SCl), a rare sulfenyl chloride: