Fluoroanilines

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Fluoroanilines
Surname 2-fluoroaniline 3-fluoroaniline 4-fluoroaniline
other names o -fluoroaniline m -fluoroaniline p -fluoroaniline
Structural formula Structure of 2-fluoroaniline Structure of 3-fluoroaniline Structure of 4-fluoroaniline
CAS number 348-54-9 372-19-0 371-40-4
PubChem 9584 9742 9731
Molecular formula C 6 H 6 FN
Molar mass 111.12 g mol −1
Physical state liquid
Melting point −35 ° C −1 ° C
boiling point 182-183 ° C 186 ° C 187 ° C
pK s value
(of the conjugate
acid BH + ) 		3.20 3.57 4.65
GHS
labeling
02 - Highly / extremely flammable 05 - Corrosive

07 - Warning
danger
05 - Corrosive 07 - Warning
danger
05 - Corrosive 07 - Warning
danger
H and P phrases 226-302-315-318-335 302-315-318-335 302-314
no EUH phrases see above no EUH phrases
261-280-305 + 351 + 338 261-280-305 + 351 + 338 280-305 + 351 + 338-310

In chemistry, the fluoroanilines form a group of substances that are derived from both aniline and fluorobenzene . The structure consists of a benzene ring with attached amino group  (-NH 2 ) and fluorine  (-F) as substituents . Their different arrangements ( ortho , meta or para ) result in three constitutional isomers with the empirical formula C 6 H 6 FN.

properties

The introduction of the fluorine atom changes the boiling point only slightly compared to aniline (184 ° C).

Individual evidence

  1. ↑ a b c CRC Handbook of Tables for Organic Compound Identification , Third Edition, 1984, ISBN 0-8493-0303-6 .
  2. ↑ a b data sheet 2-fluoroaniline from Sigma-Aldrich , accessed on April 29, 2011 ( PDF ).
  3. ↑ a b Data sheet 3-Fluoroaniline from Sigma-Aldrich , accessed on April 29, 2011 ( PDF ).
  4. ↑ a b Data sheet 4-Fluoroaniline from Sigma-Aldrich , accessed on April 29, 2011 ( PDF ).
  5. ^ Entry on aniline in the GESTIS substance database of the IFA , accessed on December 27, 2014(JavaScript required) .