6953-40-8

Basic information

• Product Name: 4-[(4-bromophenyl)hydrazono]naphthalen-1(4H)-one
• CAS NO: 6953-40-8
• Molecular Formula: C₁₆H₁₁BrN₂O
• Molecular Weight: 327.1753
• Mol File: 6953-40-8.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 445.8°C at 760 mmHg
• Flash Point: 223.4°C
• Density: 1.46g/cm³
• Vapor Pressure: 3.83E-08mmHg at 25°C
• Refractive Index: 1.664
• CAS DataBase Reference: 4-[(4-bromophenyl)hydrazono]naphthalen-1(4H)-one(CAS DataBase Reference)
• NIST Chemistry Reference: 4-[(4-bromophenyl)hydrazono]naphthalen-1(4H)-one(6953-40-8)
• EPA Substance Registry System: 4-[(4-bromophenyl)hydrazono]naphthalen-1(4H)-one(6953-40-8)

Safety Data

• Hazardous Substances Data: 6953-40-8(Hazardous Substances Data)

Upstream product

• 106-40-1 4-bromo-aniline 
• 90-15-3 α-naphthol 
• 586-77-6 4-bromo-N,N-dimethylaniline 

Relevant articles and documents

Dependence of mesomorphism on terminal polar group in novel azoester series

Novel homologous series 4-(4′-n-alkoxy benzoyloxy) napthyl azo 4″–bromo benzenes, consisted of 11 members of a series. All the 11 members (ethoxy to hexadecyloxy) except hexadecyloxy are only enantiotropically nematogenic without exhibition of any smectogenic character. Transition temperatures and the textures are determined by an optical polarizing microscopy equipped with a heating stage. Textures of a nematic phase are threaded or schlieren. Analytical and spectral data supported the molecular structure of homologs. Transition curves viz., solid-nematic and nematic-isotropic showing phase behavior of the mesophase in a phase diagram behave in normal manner. Alternation of transition temperatures is exhibited by N–I transition curve. Thus, novel series is entirely nematogenic and high ordered melting type. Thus, synthesis of a novel azoester homologous series is carried out with a view to understand and establish the effect of molecular structure on Liquid crystal (LC) behaviors of a substance.

BORON PHOTOCHEMISTRY. XV. DETERMINATION OF THE HAMMETT SUBSTITUENT CONSTANT FOR THE p-DIMESITYLBORYL GROUP

Hammett signal values reflect relative strengths of the combined inductive and resonance effects of substituents.Using the ionization technique, as well as an independent neutralization method, we found the ?H value for the p-dimesitylboryl group to be 0.42 as compared to 0.78 for the p-nitro group.The value of ?uv,H=0.65 +/- 0.03 determined from pi-electron interaction processes, such as absorption spectra and pi complex formation, is felt to relate better to the p-dimesitylboryl-substituted dyes.A similar function reflecting the pi resonance interaction of substituent groups is the Tomasik-Krygowski ?uv,K value, for which 0.58 was found for the p-dimesitylboryl group compared to 0.66 for the p-nitro group.