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qjc830401
ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)
Chem.Q
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¼äÂȹýÑõ±½¼×Ëá O-- ÁÚ m£¼ä P- ¶Ô [ Last edited by qjc830401 on 2007-9-17 at 19:42 ] |

2Â¥2007-09-17 11:11:59
lzhiping
ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)
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Â¥ÉϵÄÐֵܿÉÄÜ´íÁË¡£¿ÉÄÜÊǼäÂȹýÑõ±½¼×Ëá¡£ [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
yaowushi
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4Â¥2007-09-17 19:25:01













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