Cas no 103-33-3 (Azobenzene)

Azobenzene is a versatile organic compound characterized by its diazenyl functional group (–N=N–) linking two phenyl rings. It is widely recognized for its photochromic properties, undergoing reversible trans-cis isomerization upon exposure to specific wavelengths of light, particularly UV and visible light. This unique behavior makes it valuable in applications such as molecular switches, optical storage devices, and photoresponsive materials. Azobenzene derivatives are also employed in liquid crystal systems, surface modification, and drug delivery due to their ability to induce structural changes under light irradiation. Its stability, tunable properties through functionalization, and compatibility with various matrices underscore its utility in both research and industrial settings.
Azobenzene structure
Azobenzene structure
Product Name:Azobenzene
CAS No:103-33-3
MF:C12H10N2
MW:182.221202373505
MDL:MFCD00003022
CID:81840
PubChem ID:2272
Update Time:2025-06-08

Azobenzene Chemical and Physical Properties

Names and Identifiers

    • Azobenzene
    • Azobenzene solution
    • Method 8270 Semi-Volatile Mix 4B-R1
    • 1,2-diphenyldiazene
    • AluMiniuM isopropoxide
    • Azobenzeen
    • Azobenzen
    • Azobenzide
    • AZOBENZOL
    • Azofume
    • Base
    • Benzene azobenzene
    • Benzofume
    • diphenyldiazene
    • DiphenyldiiMide
    • ENT 14,611
    • Neutral Extractables Mix 3
    • Neutrals - Mix 2
    • Phenylazobenzene
    • NSC 2102
    • A 15073
    • Azobenze
    • ent14,611
    • Benzene, azobis-
    • NSC-2102
    • DTXSID8020123
    • Azobenzene, 96%
    • A937000
    • SCHEMBL565791
    • AKOS016042359
    • F0U1H6UG5C
    • (Z)-diphenyldiazene
    • Azobenzeen [Dutch]
    • NCGC00254531-01
    • NCGC00094554-03
    • Azodibenzene
    • BSPBio_003031
    • PHENYLBUTAZONE IMPURITY D [EP IMPURITY]
    • SY048268
    • DTXCID40123
    • USAF EK-704
    • Tox21_300495
    • KBio2_002544
    • Spectrum4_000448
    • C19334
    • Z1238795333
    • Azobenzene, (E)-
    • NCGC00094554-01
    • CHEBI:58996
    • diphenyl diimide
    • AS-48863
    • CHEBI:190358
    • (E)-diphenyl-diazene
    • (Z)-azobisbenzene
    • E/Z-Azobenzene
    • WLN: RNUNR
    • Spectrum5_001109
    • Azodibenzeneazofume
    • Benzene, azodi-
    • Caswell No. 064
    • Q27126386
    • EINECS 203-102-5
    • Diazene, diphenyl-, (Z)-
    • Azobisbenzene
    • Azobenzene, Reagent
    • trans-Azobenzene
    • 1080-16-6
    • NCGC00091871-01
    • Diazene, diphenyl-, (E)-
    • Diazene, 1,2-diphenyl-
    • MFCD00003022
    • DMLAVOWQYNRWNQ-BUHFOSPRSA-N
    • Azobenzene, 98%
    • AZOBENZENE [HSDB]
    • 103-33-3
    • NCGC00091871-03
    • NCGC00091871-02
    • CCRIS 65
    • AZOBENZENE [IARC]
    • IDI1_000502
    • BDBM115180
    • HMS1921N05
    • AZOBENZENE [MI]
    • (E)-azobenzol
    • 1-16-00-00218 (Beilstein Handbook Reference)
    • NCGC00091871-04
    • Spectrum2_001433
    • 17082-12-1
    • Benzeneazobenzene
    • Azobenzene, analytical standard
    • AI3-14611
    • (E)-1,2-Diphenyldiazene
    • BRN 0742609
    • SCHEMBL32032
    • NCI-C02926
    • A0565
    • CHEBI:58997
    • NCGC00091871-05
    • FT-0622525
    • (E)-Diphenyldiazene
    • HSDB 1513
    • AMY6986
    • CAS-103-33-3
    • NSC2102
    • Benzene, azodi
    • cis-Azobenzene
    • CHEMBL3039456
    • CS-6935
    • (e)-azobenzene
    • (E)-azodibenzene
    • DTXSID601026524
    • EN300-83247
    • KBioGR_000836
    • CHEMBL58835
    • Q410056
    • NCGC00091871-06
    • HY-B2127
    • Q27444428
    • NINDS_000502
    • 1,2-Diphenyldiazene; Phenylbutazone Imp. D (EP); Azobenzene; Phenylbutazone Impurity D
    • (Z)-azodibenzene
    • HMS501J04
    • FD10474
    • (Z)-Azobenzene
    • Azobenzene, PESTANAL(R), analytical standard
    • SPECTRUM1501172
    • KBio3_002531
    • Tox21_201458
    • AKOS015903807
    • EPA Pesticide Chemical Code 007401
    • KBio1_000502
    • Diazene, diphenyl-
    • NS00010852
    • (Z)-azobenzol
    • Spectrum_001987
    • J-000939
    • YSWG558
    • UNII-F0U1H6UG5C
    • NCGC00094554-02
    • KBio2_007680
    • Spectrum3_001476
    • KBioSS_002553
    • NCGC00259009-01
    • Diazobenzene
    • 4-(phenylazo)benzene
    • CCG-39013
    • Azobenzene Melting Point Standard
    • SPBio_001566
    • DivK1c_000502
    • CHEMBL3184266
    • KBio2_005112
    • (E)-azobisbenzene
    • 1,2-IPHENYLDIAZENE
    • PHENYLBUTAZONE IMPURITY D (EP IMPURITY)
    • AZOBENZENE (IARC)
    • STL283927
    • DA-71251
    • FA57688
    • 203-102-5
    • FBA50449
    • 1,2-Diphenyldiazene;Diphenyldiimide
    • MDL： MFCD00003022
    • Inchi： 1S/C12H10N2/c1-3-7-11(8-4-1)13-14-12-9-5-2-6-10-12/h1-10H/b14-13+
    • InChI Key： DMLAVOWQYNRWNQ-BUHFOSPRSA-N
    • SMILES： N(/C1C=CC=CC=1)=N\C1C=CC=CC=1

Computed Properties

  • Exact Mass: 182.08400
  • Monoisotopic Mass: 182.084
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 0
  • Hydrogen Bond Acceptor Count: 2
  • Heavy Atom Count: 14
  • Rotatable Bond Count: 2
  • Complexity: 157
  • Covalently-Bonded Unit Count: 1
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Surface Charge: 0
  • XLogP3: 3.8
  • Topological Polar Surface Area: 24.7

Experimental Properties

  • Color/Form: Orange red flake crystals.
  • Density: 1.09?g/mL?at 25?°C(lit.)
  • Melting Point: 65-68?°C (lit.)
  • Boiling Point: 293?°C(lit.)
  • Flash Point: Fahrenheit: 212 ° f
    Celsius: 100 ° c
  • Refractive Index: 1.62662 (78.1 oC)
  • Solubility: 6.4mg/l
  • Water Partition Coefficient: Soluble in alcohol, ether, benzene and glacial acetic acid. Insoluble in water.
  • Stability/Shelf Life: Stable. Combustible. Incompatible with strong oxidizing agents. Air and light sensitive.
  • PSA: 24.72000
  • LogP: 4.10200
  • Merck: 917
  • Vapor Pressure: 1 mmHg ( 104 °C)
  • Color/Form: 2000?μg/mL in methanol
  • Sensitiveness: Sensitive to humidity
  • Solubility: Soluble in ethanol, ether and glacial acetic acid, insoluble in water.

Azobenzene Security Information

Azobenzene Customs Data

  • HS CODE：2927000090
  • Customs Data：

    China Customs Code:

    2927000090

    Overview:

    2927000090 Other diazo compounds\Azo compounds, etc(Including azoxycompounds). VAT:17.0% Tax refund rate:9.0% Regulatory conditions:nothing MFN tariff:6.5% general tariff:30.0%

    Declaration elements:

    Product Name, component content, use to

    Summary:

    2927000090 other diazo-, azo- or azoxy-compounds.Supervision conditions:None.VAT:17.0%.Tax rebate rate:9.0%.MFN tariff:6.5%.General tariff:30.0%

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Azobenzene Production Method

Production Method 1

Reaction Conditions
1.1 Reagents: Periodic acid (H5IO6), sodium salt (1:2) Solvents: Diethyl ether
Reference
Oxidation reaction of phenylhydrazine with sodium periodate. I. Oxidation reaction of phenylhydrazine with sodium periodate in various ethers
Tsuboi, Masaki, Nippon Kagaku Kaishi, 1986, (8), 1102-6

Azobenzene Preparation Products

Azobenzene Suppliers

Suzhou Senfeida Chemical Co., Ltd
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(CAS:103-33-3)Azobenzene
Order Number:sfd10015;1647523
Stock Status:in Stock
Quantity:200kg/Company Customization
Purity:99.9%/98%
Pricing Information Last Updated:Friday, 19 July 2024 14:35
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Amadis Chemical Company Limited
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(CAS:103-33-3)Azobenzene
Order Number:A937000
Stock Status:in Stock
Quantity:100g
Purity:99%
Pricing Information Last Updated:Friday, 30 August 2024 15:21
Price ($):251.0
Tiancheng Chemical (Jiangsu) Co., Ltd
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(CAS:103-33-3)Azobenzene
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Quantity:25KG,200KG,1000KG
Purity:99%
Pricing Information Last Updated:Friday, 20 June 2025 11:41
Price ($):discuss personally

Azobenzene Related Literature

Related Categories

Additional information on Azobenzene

Azobenzene: A Comprehensive Overview

Azobenzene, also known by its CAS number 103-33-3, is a versatile organic compound with significant applications in various fields of science and technology. This compound, characterized by its azo group (–N=N–) linking two benzene rings, has been a subject of extensive research due to its unique photochemical properties. The molecule's ability to undergo reversible trans-cis isomerization upon exposure to light has made it a cornerstone in the development of light-responsive materials. This article delves into the properties, applications, and recent advancements in the study of Azobenzene.

The structure of Azobenzene consists of two aromatic benzene rings connected by a nitrogen-based azo group. This configuration imparts the molecule with distinct electronic and optical characteristics. Recent studies have highlighted the importance of Azobenzene in the field of photoresponsive materials, where its ability to undergo structural changes under light irradiation has been exploited for applications such as molecular switches, sensors, and actuators. Researchers have also explored the use of Azobenzene derivatives in drug delivery systems, leveraging their photochemical properties to achieve controlled release mechanisms.

One of the most notable advancements in Azobenzene research involves its application in soft matter physics and materials science. Scientists have utilized the compound's photoisomerization properties to create stimuli-responsive polymers and liquid crystals. These materials exhibit changes in physical properties, such as viscosity and refractive index, when exposed to light. For instance, studies published in 2023 demonstrate how Azobenzene-based polymers can be employed in adaptive optics and smart windows, offering potential solutions for energy-efficient building technologies.

Another area where Azobenzene has shown promise is in the field of nanotechnology. Researchers have incorporated Azobenzene into nanoparticles to create systems capable of controlled drug delivery and targeted therapy. By attaching therapeutic agents to Azobenzene-modified nanoparticles, scientists can achieve precise drug release at specific sites within the body upon exposure to light. This approach not only enhances treatment efficacy but also minimizes side effects, making it a promising avenue for future medical applications.

In addition to its practical applications, Azobenzene continues to be a valuable tool in fundamental research. Its role as a model system for studying photochemical reactions has provided insights into the mechanisms underlying light-induced structural changes in molecules. Recent experiments have utilized advanced spectroscopic techniques to monitor the dynamics of Azobenzene isomerization at unprecedented temporal resolutions, shedding light on the ultrafast processes involved.

The synthesis and characterization of novel Azobenzene derivatives have also been a focal point of recent research efforts. By modifying the substituents on the benzene rings or introducing additional functional groups, scientists can tailor the properties of Azobenzene for specific applications. For example, fluorinated Azobenzene derivatives have been developed for use in optoelectronic devices due to their enhanced stability and fluorescence properties.

Furthermore, the integration of Azobenzene into supramolecular assemblies has opened new avenues for self-assembled systems with responsive behaviors. Researchers have demonstrated that Azobenzene can serve as a building block for constructing dynamic supramolecular structures that respond to external stimuli such as light or temperature changes. These systems hold potential for applications in sensing, catalysis, and molecular recognition.

In conclusion, Azobenzene, with its unique combination of structural flexibility and photochemical reactivity, remains a pivotal compound in contemporary scientific research. Its diverse applications span across disciplines ranging from materials science to biomedicine, with ongoing advancements continually expanding its utility. As researchers continue to explore new ways to harness its properties, Azobenzene is poised to play an increasingly important role in shaping future technologies.

103-33-3 (Azobenzene) Related Products

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Suzhou Senfeida Chemical Co., Ltd
(CAS:103-33-3)Azobenzene
sfd10015;1647523
Purity:99.9%/98%
Quantity:200kg/Company Customization
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Amadis Chemical Company Limited
(CAS:103-33-3)Azobenzene
A937000
Purity:99%
Quantity:100g
Price ($):251.0
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