25548-36-1

Basic information

• Product Name: (Z)-4-(dimethylamino)azobenzene
• Synonyms: (Z)-4-(dimethylamino)azobenzene
• CAS NO: 25548-36-1
• Molecular Weight: 225.293
• Mol File: 25548-36-1.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: (Z)-4-(dimethylamino)azobenzene(CAS DataBase Reference)
• NIST Chemistry Reference: (Z)-4-(dimethylamino)azobenzene(25548-36-1)
• EPA Substance Registry System: (Z)-4-(dimethylamino)azobenzene(25548-36-1)

Safety Data

• Hazardous Substances Data: 25548-36-1(Hazardous Substances Data)

Upstream product

• 60-11-7 methyl yellow 

Downstream Products

• 60-11-7 methyl yellow 

Relevant articles and documents

Complexation of 4-Dimethylaminoazobenzene with Various Kinds of Cyclodextrins: Effects of Cyclodextrins on the Thermal cis-to-trans Isomerization

On the basis of the change in electronic and induced circular dichroism spectra for complex formation, the complexation of 4-dimethylaminoazobenzene (DAAB) with four kinds of cyclodextrins (α- and β-cyclodextrin (CD), heptakis(2,6-di-O-methyl)-β-cyclodextrin, and heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin) was studied in methanol-water and dimethyl sulfoxide-water mixtures. It was found that the trans and cis isomers of DAAB form two different types of complex (inclusion and lid type) with CDs, depending on the kinds of CDs and solvents. Further, we have examined the effect of CDs on the thermal cis-to-trans isomerization of DAAB. The accelerated or decelerated effect on the thermal isomerization was observed upon adding CDs. The effects of CDs on the thermal isomerization are discussed in connection with the complexation of the cis-isomer of DAAB with CDs.

THERMAL ISOMERIZATION OF AZOBENZENES. III. SUBSTITUENT, SOLVENT, AND PRESSURE EFFECTS ON THE THERMAL ISOMERIZATION OF PUSH-PULL AZOBENZENES.

The substituent, solvent, and pressure effects on the rate of the thermal cis-to-trans isomerization of 4-dimethylamino-4 prime -nitroazobenzene (NDAAB) derivatives have been studied. 2-Methyl- and 2 prime -chloro-NDAAB isomerize faster than NDAAB, and 2 prime -methyl- and 2-chloro-NDAAB isomerize slower than NDAAB. For 2,2 prime -dimethyl- and 2,2 prime -dichloro-NDAAB, the rates are between those of the monosubstituted ones. These findings are very similar to those for 4-(dimethylamino)azobenzene (DAAB) derivatives, and no fundamental difference in the kinetic-substituent effects was observed between NDAAB and DAAB. The volume of activation, which is of a negative value, varies remarkably from solvent to solvent and from substituent to substituent; its magnitude increases generally with an increase in the solvent polarity.