Potassium trioxochlorochromate

Potassium trioxo­chloro­chromate, Potassium chlorochromate [http://www.csudh.edu/oliver/chemdata/chemsyn.htm Synonyms Of Chemicals ] ] [http://books.google.com/books?id=QQZKAAAAMAAJ&q=%22P%C3%A9ligot%27s+salt%22&dq=%22P%C3%A9ligot%27s+salt%22&pgis=1] ] [http://books.google.com/books?id=394yAAAAMAAJ&q=%22P%C3%A9ligot%27s+salt%22&dq=%22P%C3%A9ligot%27s+salt%22&pgis=1] ] , Peligot's salt, or Péligot's salt is a chemical substance named after Eugène-Melchior Péligot [http://www.sas.org/E-Bulletin/2002-08-23/chem/body.html Untitled Document ] ] . Its formula is KCrO₃Cl [http://srb.npaci.edu/cgi-bin/nsdl.cgi?uid=/2004-07-19T23:32:41Z/2423943D27E2C38E2428B388E8938B20/archemm.html Glossary ] ]

Peligot's salt is the potassium salt of chlorochromic acid (chromic acid where chlorine has replaced one of the OH groups). Peligot's salt can be considered intermediate between chromic acid and chromyl chloride.

It is stable in air but in water, where it is soluble, it can become hydrolysed. When under high temperature, Peligot's salt parts with its chlorine and produces chromic oxide.

Potassium chlorochromate can be prepared from potassium dichromate, hydrochloric acid, and water. The substance may look like long orange-red crystals.

Peligot's salt can oxidise the substance benzyl alcohol, a reaction which can be catalysed by acid [http://www.springerlink.com/content/l7j435v4ln868620/ SpringerLink - Journal Article ] ] .

The structure of Peligot's salt has been redeterminated in 2002.

(18-Crown-6)potassium chloro­chromate

(18-Crown-6)potassium chloro­chromate (1,4,7,10,13,16-hexaoxacyclo­octadecane-k⁶O)potassium chloro­chromate) or CrClO₃ is a crystal structure that contains a K⁺ cation [http://journals.iucr.org/e/issues/2005/02/00/cv6410/cv6410bdy.html] ] .

afety

Potassium chlorochromate can be toxic upon indigestion (may cause acute poisoning and kidney damage amongst other complications) or contact with the human skin (may cause eye burns, irritation, allergy, or ulceration), especially if inhalated. [http://books.google.com/books?id=o-VjWgh5mPUC&pg=PA122&dq=%22Potassium+chlorochromate%22&sig=ACfU3U1IuakBM5F4wJeuvVu7xANyFqJ2aw] ] Heating the substance, or mixing it with acids, releases chlorine gas, which is also toxic.

References