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qjc830401

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[ Last edited by qjc830401 on 2007-9-17 at 19:42 ]
http://www.pet2008.cn/index.php?fromuid=11277
2Â¥2007-09-17 11:11:59
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lzhiping

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[937-14-4]  ¡¤ C7H5ClO3  ¡¤ m-Chloroperbenzoic Acid  ¡¤ (MW 172.57)

(electrophilic reagent capable of reacting with many functional groups; delivers oxygen to alkenes, sulfides, selenides, and amines)

Alternate Name: m-CPBA; MCPBA.

Physical Data: mp 92-94 ¡ãC.

Solubility: sol CH2Cl2, CHCl3, 1,2-dichloroethane, ethyl acetate, benzene, and ether; slightly sol hexane; insol H2O.

Form Supplied in: white powder, available with purity of 50%, 85%, and 98% (the rest is 3-chlorobenzoic acid and water).

Analysis of Reagent Purity: iodometry.2

Purification: commercial material (purity 85%) is washed with a phosphate buffer of pH 7.5 and dried under reduced pressure to furnish reagent with purity >99%.3

Handling, Storage, and Precautions: pure m-CPBA is shock sensitive and can deflagrate;4 potentially explosive, and care is required while carrying out the reactions and during workup.5 Store in polyethylene containers under refrigeration.

[ Last edited by lzhiping on 2007-9-17 at 15:24 ]
3Â¥2007-09-17 15:17:29
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