2,5-Xylidine
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Preferred IUPAC name 2,5-Dimethylaniline | |
Other names 2,5-Dimethylphenylamine, 2,5-Dimethylbenzenamine | |
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ECHA InfoCard | 100.002.229 |
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Properties | |
Chemical formula | C8H11N |
Melting point | 6 °C (43 °F; 279 K) |
Boiling point | 218 °C (424 °F; 491 K) |
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Flash point | 97 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references |
Chemical compound
2,5-Xylidine is an organic compound with the formula C6H3(CH3)2NH2. It is one of several isomeric xylidines. It is a colorless viscous liquid. Commercially significant derivatives include Solvent Yellow 30, Solvent Red 22, Acid Red 65, and Solvent Red 26.[1]
Production
Like many xylidines, it is prepared by nitration of the corresponding xylene followed by reduction of the nitroxylene. Reduction can be effected with HCl/Fe, but usually is achieved by catalytic hydrogenation:
- Me2C6H4 + HNO3 → Me2C6H3NO2 + H2O
- Me2C6H3NO2 + 3 H2 → Me2C6H3NH2 + 3H2O
Safety
It is mutagenic and tumor-inducing. Acute toxicity of xylidines is modest as indicated by LD50 (rats, oral) are in the range 0.1-1 g/kg.
References
- ^ M. Meyer (2012). "Xylidines". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a28_455. ISBN 9783527303854.