Pyridinium chlorochromate, or PCC, will not fully oxidize the alcohol to the carboxylic acid as does the Jones reagent.A disadvantage to using PCC is its toxicity. Other articles where Pyridinium chlorochromate is discussed: aldehyde: Synthesis of aldehydes: …have been used, most notably pyridinium chlorochromate, PCC. PubChem Substance ID 24851416. The method is less hazardous and gives better yield. It is a red-orange solid. The EC or list number is the primary substance identifier used by ECHA. Pyridinium chlorochromate or PCC (1), an ionic compound, is an oxidizing agent. Pyridinium chlorochromate is a reddish orange solid reagent used to oxidize primary alcohols to aldehydes and secondary alcohols to ketones. PYRIDINIUM CHLOROCHROMATE Extra Pure Safety Data Sheet www.lobachemie.com 29/07/2013 6/10 SECTION 12: Ecological information 12.1. Toxicity Ecology - water : Very toxic to aquatic life. It is a reagent in organic synthesis. NACRES NA.22 Pyridinium chlorochromate (PCC) is the salt with the formula C5H5NH. PCC was developed by Elias James Corey and William Suggs in 1975. MDL number MFCD00013106. M. Hunsen, Synthesis, 2005, 2487-2490. An improved procedure for the preparation of Corey's reagent—Pyridinium chlorochromate has been described. Pyridinium chlorochromate (PCC) is a yellow-orange salt with the formula [C 5 H 5 NH] + [CrO 3 Cl] −.It is a reagent in organic synthesis used primarily for oxidation of alcohols to form carbonyls.A variety of related compounds are known with similar reactivity. (Assume that PCC is present in excess.) Synthetic utility of the reagent has been shown to increase in the presence of anhydrous acetic acid, used for the first time as catalyst, for the oxidation of alcohols. Molecular Weight 215.56 . It is commercially available or can be readily prepared using the following procedure. As pyridine is often used as an organic base in chemical reactions, pyridinium salts are produced in many acid-base reactions. Pyridinium chlorochromate 98% Synonym: PCC CAS Number 26299-14-9. Beilstein/REAXYS Number 7054643 . Expert Answer 100% (20 ratings) Previous question Next question Transcribed Image Text from this Question. Pyridinium chlorochromate (PCC) is a yellow-orange salt with the formula [C 5 H 5 NH] + [CrO 3 Cl] −. Linear Formula C 5 H 6 NClCrO 3. Show transcribed image text. Its salts are often insoluble in the organic solvent, so precipitation of the pyridinium leaving group complex is an indication of the progress of the reaction. EC Number 247-595-5. PCC is primarily used to oxidize primary alcohols to aldehydes. M. Hunsen, Synthesis, 2005, 2487-2490. The pyridinium ion also plays a role in Friedel-Crafts acylation. A variety of related compounds are known with similar reactivity. 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