N , N -dimethyltoluidines

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The N , N -dimethyltoluidines form a group of substances in chemistry and are aromatic compounds with a dimethylamino group [–N (CH 3 ) 2 ] and a methyl group  (–CH 3 ) as substituents on the benzene ring . The different arrangement of the substituents results in three constitutional isomers with the empirical formula C 9 H 13 N. As isomers with the same empirical formula there are u. a. the trimethylanilines .

Representative

N , N -dimethyltoluidines
Surname N , N -dimethyl- o -toluidine N , N -dimethyl- m -toluidine N , N -dimethyl- p -toluidine
other names N , N , 2-trimethylaniline N , N , 3-trimethylaniline
3-dimethylaminotoluene 		N , N , 4-trimethylaniline,
dimethyl- p -toluidine
Structural formula Structure of N, N-dimethyl-o-toluidine Structure of N, N-dimethyl-m-toluidine Structure of N, N-dimethyl-p-toluidine
CAS number 609-72-3 121-72-2 99-97-8
PubChem 11869 8488 7471
Molecular formula C 9 H 13 N
Molar mass 135.21 g mol −1
Physical state liquid
Brief description colorless liquid yellow liquid yellow liquid
Melting point −60 ° C −15 ° C −15 ° C
boiling point 194.1 ° C 212 ° C 211 ° C
density 0.929 g cm −3 0.941 g cm −3 0.937 g cm −3
solubility practically insoluble in water 0.65 g l −1
GHS
labeling
06 - Toxic or very toxic 08 - Dangerous to health
danger
06 - Toxic or very toxic 08 - Dangerous to health
danger
06 - Toxic or very toxic 08 - Dangerous to health
danger
H and P phrases 301-311-331-373-412 301-311-330-373-412 301-311-331-373-412
no EUH phrases no EUH phrases no EUH phrases
261-273-280-301 + 310-311 260-301 + 310-320-361-405-501 261-273-280-301 + 310-311

Individual evidence

  1. ↑ a b c data sheet N, N-dimethyl-o-toluidine, 99% from Sigma-Aldrich , accessed on January 31, 2012 ( PDF ).
  2. ↑ a b c d e Entry on N, N-dimethyl-m-toluidine in the GESTIS substance database of the IFA , accessed on January 31, 2012 (JavaScript required)
  3. ↑ a b c d data sheet 4, N, N-trimethylaniline, purum, ≥98.0% (GC) from Sigma-Aldrich , accessed on November 4, 2016 ( PDF ).
  4. ↑ a b David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-348.
  5. ↑ a b Data sheet N, N-dimethyl-p-toluidine (PDF) from Merck , accessed on March 26, 2018.