2,6-diethylaniline

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Structural formula
Structural formula of 2,6-diethylaniline
General
Surname 2,6-diethylaniline
other names

2-amino-1,3-diethylbenzene

Molecular formula C 10 H 15 N
Brief description

light- and air-sensitive colorless to yellowish liquid

External identifiers / databases
CAS number
EC number 209-445-7
ECHA InfoCard 100.008.588
PubChem 11369
ChemSpider 21106539
Wikidata Q209276
properties
Molar mass 149.24 g mol −1
Physical state

liquid

density

0.96 g cm −3

Melting point

3 ° C

boiling point

243 ° C

Vapor pressure

0.03 hPa (20 ° C)

solubility
  • slightly soluble in water (0.67 g l −1 at 27 ° C)
  • miscible with isooctane, toluene and ethyl alcohol
Refractive index

1.545 (20 ° C)

safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary
07 - Warning

Caution

H and P phrases H: 302
P: 301 + 312
Toxicological data

1800 mg kg −1 ( LD 50ratoral )

As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

2,6-Diethylaniline is a chemical compound from the group of aromatic amino compounds ( amino group on the ring), more precisely the diethylanilines .

Extraction and presentation

2,6-Diethylaniline can be produced by Friedel-Crafts alkylation of aniline with ethene in the presence of aluminum chloride or mercury chloride.

properties

2,6-Diethylaniline is a colorless liquid (as a technical product, dark red liquid), which turns yellow when exposed to light and air. When heated, it decomposes, producing nitrogen oxides , carbon monoxide and carbon dioxide . The hydrochloride of the compound , which is insoluble in water, is formed with hydrogen chloride . The vapor pressure function results according to August according to ln (P) = A− (B / T) (P in Pa, T in K) with A = 27.83 and B = 7869 in the temperature range from 10 to 55 ° C. The enthalpy of vaporization at 25 ° C is 65.89 kJ mol −1 , the heat capacity c p 305.942 J K −1 mol −1 . The compound forms inflammable vapor-air mixtures at high temperatures. The compound has a flash point of 109 ° C. The ignition temperature is 460 ° C. The substance therefore falls into temperature class T1.

use

2,6-Diethylaniline is used as an intermediate in the manufacture of crop protection products (such as alachlor , butachlor , diafenthiuron ) and other derived chemical compounds. It also reappears as a metabolite of these compounds.

Web links

Individual evidence

  1. a b c d e f g h Entry on 2,6-diethylaniline in the GESTIS substance database of the IFA , accessed on January 9, 2019(JavaScript required) .
  2. a b c data sheet 2,6-diethylaniline from Sigma-Aldrich , accessed on February 9, 2010 ( PDF ).Template: Sigma-Aldrich / name not given
  3. a b ( page no longer available , search in web archives: DEA (Albermarle) )@1@ 2Template: dead link / albemarle.in
  4. Entry on 2,6-diethylaniline in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
  5. Data sheet 2,6-diethylaniline from AlfaAesar, accessed on February 5, 2010 ( PDF )(JavaScript required) . .
  6. Patent DE951501 : Process for the production of ring-alkylated aromatic amines. Registered on December 25, 1953 , published on October 31, 1956 , applicant: Bayer AG, inventor: Rudolf Stroh, Josef Ebersberger, Hans Haberland.
  7. ^ R. Stroh, J. Ebersberger, H. Haberland, W. Hahn: Newer methods of preparative organic chemistry II. 7. Alkylation of aromatic amines. In: Angew. Chem. 69, 1957, pp. 124-131, doi: 10.1002 / anie.19570690403 .
  8. a b S. P. Verevkin: thermochemical study of the ortho interactions in alkyl substituiertem anilines. In: J. Chem. Thermodyn. 32, 2000, pp. 247-259, doi: 10.1006 / jcht.1999.0587 .
  9. a b E. Brandes, W. Möller: Safety-related parameters. Volume 1: Flammable Liquids and Gases. Wirtschaftsverlag NW - Verlag für neue Wissenschaft, Bremerhaven 2003.