31482-56-1

Basic information

• Product Name: Disperse Orange 25
• Synonyms: 4-Nitro-4’-[N-ethyl-N-(2-cyanoethyl)-amino]azobenzene;abcolorange2rl;LATYL ORANGE NST;FORON BRILLIANT ORANGE E-RL;DISPERSE ORANGE 25;ARTISIL BRILLIANT ORANGE RL;4-[n-(2-cyanoethyl)-n-ethylamino]-4'-nitroazobenzene;3-[N-ETHYL-4-(4-NITROPHENYLAZO)PHENYLAMINO]PROPIONITRILE
• CAS NO: 31482-56-1
• Molecular Formula: C₁₇H₁₇N₅O₂
• Molecular Weight: 323.35
• EINECS: 250-654-8
• Product Categories: Organics;Solvent Dyestuff
• Mol File: 31482-56-1.mol

Chemical Properties

• Melting Point: 170 °C (dec.)(lit.)
• Boiling Point: 555 °C at 760 mmHg
• Flash Point: 289.5 °C
• Appearance: solid
• Density: 1.19
• Vapor Pressure: 2.34E-12mmHg at 25°C
• Refractive Index: 1.605
• PKA: 2.14±0.50(Predicted)
• CAS DataBase Reference: Disperse Orange 25(CAS DataBase Reference)
• NIST Chemistry Reference: Disperse Orange 25(31482-56-1)
• EPA Substance Registry System: Disperse Orange 25(31482-56-1)

Safety Data

• Hazard Codes: Xn
• Statements: 20/21/22-36/37/38
• Safety Statements: 26-37/39
• WGK Germany: 3
• RTECS: TZ4700000
• Hazardous Substances Data: 31482-56-1(Hazardous Substances Data)

Usage

Uses

Used in Photonic Applications:
Disperse Orange 25 is used as an industrial dye for a variety of photonic applications, such as optical switches and modulators.
Used in Textile Industry:
Disperse Orange 25 is used as a dye for polyester and their blended fabric dyeing. It has good ironing fastness, light fastness, perspiration fastness, and washing fastness according to AATCC and ISO standards.
Used in Electrochemical Devices:
Disperse Orange 25 is used in p-type semiconductors to improve the photo-thermal properties of electrochemical devices, making it a promising material for enhancing the performance of these devices.

Preparation

4-Nitrobenzenamine diazo, and N-ethyl-N-cyanoethylaniline?coupling.

Flammability and Explosibility

Notclassified

Standard

Ironing Fastness

Fading

Stain

AATCC

4-5

ISO

5

InChI:InChI=1/C17H17N5O2/c1-2-21(13-3-12-18)16-8-4-14(5-9-16)19-20-15-6-10-17(11-7-15)22(23)24/h4-11H,2-3,13H2,1H3

Upstream product

• 12223-19-7 4,4'-nitro-(ethyl-2-cyanoethyl)aminoazobenzene 
• 100-01-6 4-nitro-aniline 
• 148-87-8 N-ethyl-N-(2-cyanoethyl)aniline 

Downstream Products

• 81338-13-8 3-(N-ethyl-N-{4'-[(4''-nitrophenyl)azo]phenyl}amino)propanoic acid 

Relevant articles and documents

Disperse dye composition, and preparation method and application thereof

Disclosed are a disperse dye composition, and a preparation method and application thereof. The disperse dye composition comprises a component A composed of one or more of compounds shown as a formula (1) (please see the specifications for the formula), a component B composed of one or more of compounds shown as a formula (2) (please see the specifications for the formula), forbidden aromatic amine compounds, chlorinated phenols, chlorobenzene and chlorotoluene, optional auxiliaries, and other unavoidable impurities. The total content of the forbidden aromatic amine compounds is 10 ppm or below, the respective content of the various chlorinated phenols is 0.5 ppm or below, and the total content of the chlorobenzene and chlorotoluene is 1 ppm or below. The various environment protection indexes of the disperse dye composition meet the requirements of Oeko-Tex Standard 100(2016). In addition, after fabric is dyed through the disperse dye composition, the dyed fabric meets the baby level requirements of Oeko-Tex Standard 100(2016).

Rate constants of the thermal cis-trans isomerization of azobenzene dyes in solvents, acetone/water mixtures, and in microheterogeneous surfactant solutions

Rate constants kiso of the thermal cis-trans isomerization of four 4,4′-nitro-aminoazobenzenes with different amino groups have been determined in homogeneous aprotic solvents and polyglykol oligomers, primarily by means of conventional flash photolysis. The rate constants have been correlated with polarity (according to λmax from UV/Vis absorption spectra of the trans isomers) and bulk viscosity of the solvents. Qualitative conclusions about the influence of varying concentrations of water with respect to polarity and hydrogen bonding on kiso- and λmax-values in acetone/water mixtures were derived. Based on these results the data from microheterogeneous solutions have been interpreted. In microheterogeneous water/surfactant solutions kiso-values of selected azo dyes were strongly dependent on the concentrations of SDS, Triton X-100, C12EO8 in water, and varied with the composition of bicontinuous microemulsions of Igepal CA-520/heptane/water. The large spread of isomerization rate constants is in part due to varying microviscosity. Replacement of H2O by D2O in aqueous surfactant solutions produced surprisingly large kinetic solvent isotope effects.