2-nitronaphthalene

Structural formula
General
Surname	2-nitronaphthalene
other names	β-nitronaphthalene 2-NN
Molecular formula	C 10 H 7 NO 2
Brief description	colorless solid
External identifiers / databases
CAS number 581-89-5 EC number 209-474-5 ECHA InfoCard 100.008.614 PubChem 11392 Wikidata Q2617910
properties
Molar mass	173.17 g mol −1
Physical state	firmly
density	1.31 g cm −3
Melting point	78.7 ° C
boiling point	165 ° C (20 mbar)
solubility	practically insoluble in water (22 mg / l)
safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary danger H and P phrases H: 228-350-411 P: 201-210-273-308 + 313
MAK	Switzerland: 0.035 ml m −3 or 0.25 mg m −3
Toxicological data	4400 mg kg −1 ( LD 50 ,  rat ,  oral )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

2-Nitronaphthalene is a chemical compound from the group of aromatic nitro compounds . It is a colorless solid.

Occurrence

2-Nitronaphthalene occurs in low concentrations in diesel engine and industrial exhaust gases, as well as in combustion residues from wood (in the case of incomplete combustion of organic material).

presentation

2-Nitronaphthalene is obtained by reacting naphthalene with nitrating acid, although it is produced as a by-product. The main product is 1-nitronaphthalene . In industrial processes, the product ratio is> 95% (1-nitronaphthalene) to <4.5% (2-nitronaphthalene).

use

2-Nitronaphthalene is used in the manufacture of naphthylamines (for example 2-naphthylamine ), dyes and pesticides .

safety instructions

2-Nitronaphthalene dusts can form explosive mixtures with air. In animal experiments, 2-nitronaphthalene is weak, but clearly carcinogenic.

Individual evidence

1. ↑ ^{a b c d e f g} Entry on 2-nitronaphthalene in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .
2. ↑ Entry on 2-nitronaphthalene in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers and / or distributors can expand the harmonized classification and labeling .
3. ↑ Swiss Accident Insurance Fund (Suva): Limit values ​​- current MAK and BAT values (search for 581-89-5 or 2-nitronaphthalene ), accessed on November 2, 2015.
4. ↑ ^{a b} Laboratory for Environmental Analyzes Bremen: Occupational and Environmental Medical Analyzes ( Memento from August 29, 2013 in the Internet Archive ) (PDF; 498 kB), accessed on March 29, 2013.
5. ↑ IARC (Ed.): Diesel and gasoline engine exhausts and some nitroarenes (=  IARC monographs on the evaluation of carcinogenic risks to humans . Volume 46 ). IARC, Lyon, France 1989, ISBN 92-832-1246-0 ( iarc.fr [PDF]).
6. ^ Health Council of the Netherlands (Ed.): 2-Nitronaphthalene: health-based calculated occupational cancer risk values . Health Council of the Netherlands, Dutch Expert Committee on Occupational Standards, Den Haag 2005, ISBN 90-5549-561-1 ( 2-Nitronaphthalene: health-based calculated occupational cancer risk values ( Memento of December 7, 2015 in the Internet Archive ) [ PDF]).
7. ↑ Patent application DE2622313A1 : Process for the production of mononitro aromatics. Published on December 1, 1977 , inventor: K.-W. Thiem, A. Hamers, J. Heinen. ‌