Trimethylaniline

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The trimethylanilines form a group of substances in chemistry and are aromatic compounds with three methyl groups  (-CH 3 ) and one amino group  (-NH 2 ) as substituents on the benzene ring (" aromatic amines "). The different arrangement of the substituents results in six constitutional isomers with the empirical formula C 9 H 13 N. If the substance group is expanded so that methyl groups are also located on the nitrogen atom, further isomers result, among others. a. the N , N -dimethyltoluidines .

Trimethylaniline
Surname 2,3,4-trimethylaniline 2,3,5-trimethylaniline 2,3,6-trimethylaniline 2,4,5-trimethylaniline 2,4,6-trimethylaniline 3,4,5-trimethylaniline
other names 1-amino-2,4,5-trimethylbenzene
(2,4,5-trimethylbenzene) amine
psi-cumidine
pseudocumidine 		Mesidine
2-aminomesitylene
2-amino-1,3,5-trimethylbenzene
Structural formula Structure of 2,3,4-trimethylaniline Structure of 2,3,5-trimethylaniline Structure of 2,3,6-trimethylaniline Structure of 2,4,5-trimethylaniline Structure of 2,4,6-trimethylaniline Structure of 3,4,5-trimethylaniline
CAS number 1467-35-2 137-17-7
21436-97-5 ( hydrochloride )		 88-05-1
6334-11-8 (hydrochloride)		 1639-31-2
Trimethylaniline-cas (mixture of isomers)
PubChem 73844 12782408 11958947 8717 6913 74227
Molecular formula C 9 H 13 N
Molar mass 135.21 g mol −1
Physical state firmly liquid
Brief description light yellow to red-brown
solid 		yellow-brown liquid with a
characteristic odor
Melting point 68 ° C −5 ° C
boiling point 234 ° C 232-234 ° C
density 0.957 g cm −3 0.96 g cm −3
solubility practically insoluble in water
GHS
labeling
06 - Toxic or very toxic 08 - Dangerous to health
09 - Dangerous for the environment
danger
06 - Toxic or very toxic
danger
H and P phrases 350-331-311-301-411 330-302-312-315-319-335
no EUH phrases no EUH phrases
? 260-284-305 + 351 + 338
320-405-501

use

2,4,6-Trimethylaniline is used in the manufacture of azo polymerization initiators and is an intermediate in the manufacture of dyes and pharmaceuticals. 2,4,5-trimethylaniline is used in the production of the red dye Ponceau 3R .

Individual evidence

  1. ↑ a b c d e Entry on 2,4,5-trimethylaniline in the GESTIS substance database of the IFA , accessed on January 31, 2012(JavaScript required) .
  2. ↑ a b c d e f Entry on 2,4,6-trimethylaniline in the GESTIS substance database of the IFA , accessed on January 31, 2012(JavaScript required) .
  3. ↑ National Institute of Environmental Health Sciences: Abstract for TR-160 - 2,4,5-Trimethylaniline (CASRN 137-17-7) , accessed November 18, 2014.