Azoxybenzene
Structural formula | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
General | ||||||||||||||||
Surname | Azoxybenzene | |||||||||||||||
other names |
|
|||||||||||||||
Molecular formula | C 12 H 10 N 2 O | |||||||||||||||
Brief description |
orange solid |
|||||||||||||||
External identifiers / databases | ||||||||||||||||
|
||||||||||||||||
properties | ||||||||||||||||
Molar mass | 198.22 g mol −1 | |||||||||||||||
Physical state |
firmly |
|||||||||||||||
density |
1.16 g cm −3 (20 ° C) |
|||||||||||||||
Melting point |
|
|||||||||||||||
boiling point |
Decomposes to nitrous gases |
|||||||||||||||
solubility |
practically insoluble in water |
|||||||||||||||
safety instructions | ||||||||||||||||
|
||||||||||||||||
Toxicological data | ||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Azoxybenzene is a chemical compound belonging to the azobenzenes group . The flammable, water-insoluble solid has been produced by Fahlberg-List since 1974 . It was approved as an active ingredient against varroa mites in the GDR until 1992 under the trade name Falivaron .
Extraction and presentation
Azoxybenzene can be produced by reacting nitrobenzene with an oxidizing agent (e.g. arsenic (III) oxide ) and caustic soda . Alternatively, N- phenylhydroxylamine can also be oxidized.
properties
The heat of decomposition determined by DSC is −258 kJ · mol −1 or −1303 kJ · kg −1 .
Individual evidence
- ↑ a b c d e f g h i j Entry on azoxybenzene in the GESTIS substance database of the IFA , accessed on February 7, 2017(JavaScript required) .
- ↑ Entry on Azoxybenzene in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
- ↑ Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 998 ( limited preview in Google Book search).
- ↑ Grewer, T .; Klais, O .: Exothermic decomposition - investigations of the characteristic material properties , VDI-Verlag, series "Humanisierung des Arbeitsleben", Volume 84, Düsseldorf 1988, ISBN 3-18-400855-X , p. 9.