3,3'-dimethoxybenzidine

Structural formula
General
Surname	3,3'-dimethoxybenzidine
other names	o -dianisidine; 3,3'-dimethoxybiphenyl-4,4'-diamine; 4,4'-diamino-3,3'-dimethoxybiphenyl;
Molecular formula	C 14 H 16 N 2 O 2
Brief description	brown solid
External identifiers / databases
EC number	204-355-4
ECHA InfoCard	100.003.960
PubChem	8411
ChemSpider	8104
Wikidata	Q222968
properties
Molar mass	244.29 g mol −1
Physical state	firmly
Melting point	137 ° C
solubility	practically insoluble in water (0.06 g l −1 at 25 ° C); soluble in acids; soluble in ethanol, benzene, ether, chloroform and acetone;
safety instructions
H and P phrases	H: 350-302
	P: 201-308 + 313
MAK	Switzerland: 0.003 ml m −3 or 0.03 mg m −3
Toxicological data	1920 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 .

3,3'-Dimethoxybenzidine is a chemical compound from the group of aminobenzenes or benzidine derivatives .

Extraction and presentation

3,3'-Dimethoxybenzidine can be obtained by reacting the methyl ether of o -nitrophenol with zinc dust and sodium hydroxide solution to form the hydrazo compound and then reacting it with hydrochloric acid .

properties

3,3'-Dimethoxybenzidine is a flammable brown solid that is practically insoluble in water. It decomposes when heated, producing nitrogen oxides, carbon monoxide and carbon dioxide . When exposed to light, it turns violet.

use

3,3'-Dimethoxybenzidine is used to produce azo dyes .

safety instructions

3,3′-dimethoxybenzidine is classified as possibly carcinogenic.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry on 3,3′-dimethoxybenzidine in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .
↑ ^a ^b data sheet o-Dianisidine from Sigma-Aldrich , accessed on May 23, 2012 ( PDF ).
↑ ^a ^b ^c Entry on 3,3′-dimethoxybenzidine in the Hazardous Substances Data Bank , accessed July 27, 2012.
↑ Entry on 3,3′-dimethoxybenzidine 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 .
↑ Swiss Accident Insurance Fund (Suva): Limits - Current MAK and BAT values (search for 119-90-4 or 3,3′-dimethoxybenzidine ), accessed on November 2, 2015.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry on 3,3′-dimethoxybenzidine in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .

[Sigma-2] ta sheet o-Dianisidine from Sigma-Aldrich , accessed on May 23, 2012 ( PDF ).

[HSDB-3] Entry on 3,3′-dimethoxybenzidine in the Hazardous Substances Data Bank , accessed July 27, 2012.

[CLP_100.003.960-4] Entry on 3,3′-dimethoxybenzidine 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 .

[5] Swiss Accident Insurance Fund (Suva): Limits - Current MAK and BAT values (search for 119-90-4 or 3,3′-dimethoxybenzidine ), accessed on November 2, 2015.