INTRODUCTION
3-Chloroperoxybenzoic acid (MCPBA) is a peroxycarboxylic acid. A white solid, it is used widely as an oxidant in organic synthesis. MCPBA is often preferred to other peroxy acids because of its relative ease of handling.
Manufacture
MCPBA can be prepared by reacting m-Chlorobenzoyl chloride with a basic solution of hydrogen peroxide, followed by acidification.
| Synonyms | 3-Chlorobenzenecarboperoxoic acid |
| CAS no. | 937-14-4 |
| EINECS no. | 213-322-3 |
| Molecular formula | C7H5ClO3 |
| Molecular weight | 172.57 |
| Structure |  |
Applications
MCPBA is versatile applicable as peracid for use in laboratories.
| Main areas are the oxidation of: |
|---|
| aldehydes and ketones to esters (Bayer-Villiger-Oxidation) |
| olefines to epoxides |
| sulfides to sulfoxides and sulfones |
| amines to nitroalkanes, nitroxides or N-oxides |
SPECIFICATIONS
| Test | Unit | Specification |
|---|---|---|
| Appearance | – | White to off white moist crystalline powder with lumps |
| Color | – | Colorless |
| Clarity | – | Clear to slightly hazy |
| 3-Chloro per benzoic acid (by Iodometry) | % | Min 70.0 |
| 3-Chloro benzoic acid | % | Max 12.0 |
| m-Chlorobenzoyl peroxide (by HPLC) | % | Max 0.2 |
| Water (by KF) | % | Balance |
STORAGE
Due to relatively unstable nature of organic peroxide a loss of quality can be detected over a period. To minimize the loss of quality, recommended maximum storage temperature (Ts max.) for each peroxide. Ts max.: 2 – 8°C)
PACKING
20 kg UN approved drum.
REACH status
MCPBA offered by ExSyn is registered under EU REACH regulations.
No matter the quantity you need, our exceptional quality and service will make ExSyn your supplier of choice! If you need any additional information or SDS, please contact us.
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