m-Phenylenediamine, also called 1,3-diaminobenzene, is an organic compound with the formula C6H4(NH2)2. It is an isomer of o-phenylenediamine and p-phenylenediamine. This aromatic diamine is a colourless solid that appears as needles, but turns red or purple on exposure to air due to formation of oxidation products.[3] Samples often come as colourless flakes and may darken in storage.
Production
m-Phenylenediamine is produced by hydrogenation of 1,3-dinitrobenzene. The dinitrobenzene is prepared by dinitration of benzene.[4]
Applications
m-Phenylenediamine is used in the preparation of various polymers including aramid fibers, epoxy resins, wire enamel coatings and polyurea elastomers. Other uses for m-phenylenediamine include as an accelerator for adhesive resins, and as a component of dyes for leather and textiles. Basic Brown 1, Basic Orange 2, Direct Black 38, and Developed Black BH. In hair-dying, m-phenylenediamine is a "coupling agent", used to produce blue colors.[5]
References
- ^ Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 5–89. ISBN 978-1498754286.
- ^ "m-Phenylenediamine MSDS". Thermo Fisher Scientific.
- ^ "1,3-PHENYLENEDIAMINE | CAMEO Chemicals | NOAA". CAMEO Chemicals. Retrieved 27 November 2021.
- ^ Smiley, Robert A. (2000), "Phenylene- and Toluenediamines", Ullmann's Encyclopedia of Industrial Chemistry, doi:10.1002/14356007.a19_405, ISBN 3527306730
- ^ Clausen, Thomas; Schwan-Jonczyk, Annette; Lang, Günther; Schuh, Werner; Liebscher, Klaus Dieter; Springob, Christian; Franzke, Michael; Balzer, Wolfgang; Imhoff, Sonja; Maresch, Gerhard; Bimczok, Rudolf (2006), "Hair Preparations", Ullmann's Encyclopedia of Industrial Chemistry, doi:10.1002/14356007.a12_571.pub2, ISBN 3527306730
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