Welcome to LookChem.com Sign In|Join Free
  • or
Home > Pharmaceutical > 495 > 

495-48-7

Basic Information
CAS No.: 495-48-7
Name: AZOXYBENZENE
Article Data: 607
Molecular Structure:
Molecular Structure of 495-48-7 (AZOXYBENZENE)
Formula: C12H10 N2 O
Molecular Weight: 198.224
Synonyms: Azoxybenzene(8CI);Diazene, diphenyl-, 1-oxide (9CI);Azobenzene, oxide;Azoxybenzide;Fenazox;Fentoxan;NSC 1796;
EINECS: 207-802-1
Density: 1.09g/cm3
Melting Point: 32-36 °C
Boiling Point: 130 °C / 0.9mmHg
Flash Point: 157°C
Appearance: ORANGE-YELLOW TO ORANGE CRYSTALS
Hazard Symbols:
Risk Codes: 20/22
Safety: Poison by subcutaneous route. Moderately toxic by ingestion, skin contact, and other routes. A skin and eye irritant. Mutation data reported. Combustible. When heated to decomposition it emits toxic fumes of NOx.
PSA: 41.11000
LogP: 4.13550
  • Display:default sort

    New supplier

  • Diazene, 1,2-diphenyl-,1-oxide

  • Casno:

    495-48-7

    Diazene, 1,2-diphenyl-,1-oxide

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 3.0-3.0

    As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

    Dayang Chem (Hangzhou) Co.,Ltd. dedicated to the development, production and marketing of chemicals which is specialized in Organic compounds; Active Pharmaceutical Ingredi

  •  Dayang Chem (Hangzhou) Co.,Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-571-88938639

    Address:9/F, Unit 2 Changdi Torch Building, 259# WenSan Road, Xihu District, Hangzhou City 310012, P.R.China

       Inquiry Now

  • Manufacturer supply Azoxybenzene CAS 495-48-7 with good quality

  • Casno:

    495-48-7

    Manufacturer supply Azoxybenzene CAS 495-48-7 with good quality

    Min.Order: 10 Kilogram

    FOB Price:  USD $ 10.0-10.0

    Manufacturer supply Azoxybenzene CAS 495-48-7 with good quality Company profile Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food/Feed addit

    Wuhan Fortuna Chemical Co., Ltd, located in the predominant Wu Han City where is a traffic hinge of China, is a big integrative chemical enterprise being engaged in producing and

  •  Wuhan Fortuna Chemical Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-27-59207852

    Address:Add: Room 2015, No.2 Building, Kaixin Mansion No.107 Jinqiao Avenue, Wuhan, China

       Inquiry Now

  • Azoxybenzene

  • Casno:

    495-48-7

    Azoxybenzene

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    he company has advanced technology, as well as a large number of excellent R & D team, to provide customers from the grams to one hundred kilograms and tons of high-quality products, competitive prices and quality se T rvice Appeara

    Located in Zhengdong New District,?Zhengzhou of Henan province, Henan Allgreen Chemical Co.,Ltd is a comprehensive high-tech modern enterprises integrating professional R&D, pro

  •  Henan Allgreen Chemical Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:+86-0371-87507775

    Address:No 260 Dongming Road,Jinshui District

       Inquiry Now

  • 495-48-7

  • Casno:

    495-48-7

    495-48-7

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 1.0-1.0

    Now we would like to update our product list for you, kindly check the below information: 1. Catalyst series ( such as Noble Metal Catalyst, Phosphorous ligand, etc ) 2. Pharmaceutical Intermediate ( such as diabtes series, Anti

    Our company engages in Electronic chemicals such as OLED,Photoresist chemical,Electrolyte additive and Intermediate Pharmaceutical production; development of noble metal catalysts,

  •  Henan Tianfu Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-371-55170693/55170694

    Address:Zhengzhou International Trade New Territory,Jinshui District,Zhengzhou ,China

       Inquiry Now

  • Pharmaceutical Grade CAS 495-48-7 with competitive price

  • Casno:

    495-48-7

    Pharmaceutical Grade CAS 495-48-7 with competitive price

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 139.0-210.0

    WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

    Zhuo Zhou Wen Xi Import and Export Co., Ltd. is a company mainly engaged in the export of pharmaceutical raw materials. Its parent company is (Wen Xi Pharma), including three subs

  •  Zhuozhou Wenxi import and Export Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-13111626072

    Address:Room 1710, Baoxin International Phase I, 19 Guanyun East Road, Zhuozhou, Hebei

       Inquiry Now

  • Diazene, 1,2-diphenyl-,1-oxide

  • Casno:

    495-48-7

    Diazene, 1,2-diphenyl-,1-oxide

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

    The company is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds,

  •  Henan Wentao Chemical Product Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-370-2722992

    Address:32 Room, 5th Floor, Building 11, No. 6 Yinxing Road, High-tech Industrial Development Zone, Zhengzhou City, Henan Province

       Inquiry Now

  • Azoxybenzene

  • Casno:

    495-48-7

    Azoxybenzene

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    superior quality Appearance:ORANGE-YELLOW TO ORANGE CRYSTALS Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:Organic synthesis intermediates. Tran

    Hangzhou Yunuo Chemical Co., Ltd. is located in Hangzhou City, China We are specialized in fine chemicals and basic chemical auxiliary materials, Organic compounds, rubber

  •  HANGZHOU YUNUO CHEMICAL CO.,LTD

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:0571-83715115

    Address:hangzhou

       Inquiry Now

  • Factory Supply Azoxybenzene

  • Casno:

    495-48-7

    Factory Supply Azoxybenzene

    Min.Order: 0 Metric Ton

    FOB Price:  USD $ 0.0-0.0

    The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

    Ality Chemical, established in 2007, is a comprehensive Chemical Production&Supply Group with Patent Technology as its core. Ality Chemical operates sales branches in Shanghai, Xia

  •  Ality Chemical Corporation

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:0513-87616220

    Address:Fine chemical industry park, Nantong,Jiangsu

       Inquiry Now

  • Diazene, 1,2-diphenyl-,1-oxide

  • Casno:

    495-48-7

    Diazene, 1,2-diphenyl-,1-oxide

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

    J&H Chemical is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other

  •  Hangzhou J&H Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-571-87396432

    Address:No.200 Zhenhua Rd.Xihu Industrial Park, Hangzhou 310030, China

       Inquiry Now

  • AZOXYBENZENE

  • Casno:

    495-48-7

    AZOXYBENZENE

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 2.0-2.0

    Zhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed

    Welcome to Taizhou Zhenyu Biotech Co.,LTD , Sister Company of Ningbo Zhenlei Chemical co.,ltd ,is a rapid growing company , We are one of TOP supplier and manufactuer of Human APIs

  •  TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:13958565781

    Address:Room 623 Yulan Square Bussiness Building . Jiaojiang Taizhou Zhejiang 318000 China

       Inquiry Now

  • AZOXYBENZENE

  • Casno:

    495-48-7

    AZOXYBENZENE

    Min.Order: 1 Gram

    FOB Price:  USD $ 0.0-0.0

    Hunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns 40 reactors from 1000L to 8000L. With complete auxiliary equipment as

    Chemfish co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns 40 reactors from 1000L

  •  Hunan chemfish Pharmaceutical co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:0731-85567275

    Address:No.10048, xiangjiang centry bulding ,kaifu district ,changsha city ,Hunan

       Inquiry Now

  • Azoxybenzene

  • Casno:

    495-48-7

    Azoxybenzene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

    Kono Chem Co.,Ltd is a leading producer of standardized herbal extracts, natural active ingredients and APIs for pharmaceutical, health food and cosmetic industries. Annually, mo

  •  Kono Chem Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:86-29-86107037-8015

    Address:No.11 Daqing Road,Lianhu District,Xi’an 710082,China

       Inquiry Now

  • Azoxybenzene

  • Casno:

    495-48-7

    Azoxybenzene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

    Antimex Chemical Limied, was founded in 2001, we are specializing in manufacturing & researching of Active pharmaceutical Ingredients,Veterinary pharm APIs,cosmetic ingredients,and

  •  Antimex Chemical Limied

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:0086-21-50563169

    Address:Room1027,No.Jinyu Road,Pudong

       Inquiry Now

  • AZOXYBENZENE

  • Casno:

    495-48-7

    AZOXYBENZENE

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    good quality, competitive price, thoughtful after sale serviceAppearance:White to Off-White Solid Storage:Keep it in dry,shady and cool place Package:as your requirement Application:Pharma;Industry;Agricultural;chemical reaserch Transportation:by Sea

    Wuhan Circle Star Bio-medic Technology co.,Ltd is located in wuhan, the central city of China, the core of the Changjiang river economic belt and known as the "thoroughfare of nin

  •  Wuhan Circle Star Chem-medical Technology co.,Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-13437180835

    Address:Experimental Building 311-15, Nuclear Magnetic Spectrometer Industry Base, No. 128 Guanggu 7th Road, Donghu New Technology Development Zone, Wuhan (Wuhan Area, Free Trade Zone)

       Inquiry Now

  • Diazene, 1,2-diphenyl-,1-oxide cas  495-48-7

  • Casno:

    495-48-7

    Diazene, 1,2-diphenyl-,1-oxide cas 495-48-7

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Diazene, 1,2-diphenyl-,1-oxide cas 495-48-7Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

    Welcome to Hangzhou Fandachem Co.,Ltd (www.FandaChem.com) Hangzhou Fandachem Co.,Ltd (Fandachem),an experienced and professional China-based Fine Chemical supplier. We supply the

  •  Hangzhou Fandachem Co.,Ltd

    China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:+86-571-28800458

    Address:Room 5010, No.9 YanAn Road,Hangzhou,Zhejiang,China

       Inquiry Now

  • AZOXYBENZENE

  • Casno:

    495-48-7

    AZOXYBENZENE

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

    Henan Kanbei Chemical Co., Ltd. is a modern high-tech chemical enterprise integrating R&D, production and sales. The company has strong technical strength, advanced equipment, stri

  •  Henan Kanbei Chemical Co.,LTD

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-152-37804566

    Address:Evergrande Future City, intersection of Zhengkai Avenue and Sixteenth Street, Kaifeng Area, Henan Pilot Free Trade Zone

       Inquiry Now

  • AZOXYBENZENE

  • Casno:

    495-48-7

    AZOXYBENZENE

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    1. Timely and efficient service to ensure communication with customers2. Produce products of different specifications and sizes according to your requirements.3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures sta

    Hebei Quanhe Biotechnology Co. LTD. is an enterprise specializing in the research and development, production and trade of pharmaceutical intermediates, apis and chemical raw mater

  •  Hebei Quanhe Biotechnology Co. LTD

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-0319-5919066

    Address:Haida Business Center, Xiangdu District

       Inquiry Now

  • AZOXYBENZENE

  • Casno:

    495-48-7

    AZOXYBENZENE

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

    Zhejiang Jiuzhou Chemical Co.,Ltd is a market-oriented and innovation-driven biopharmaceutical company. The company is focusing on the R&D, manufacturing and sales of pharmaceutica

  •  ZHEJIANG JIUZHOU CHEM CO.,LTD

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86 19334956669

    Address:Waisha Road,Jiaojiang

       Inquiry Now

  • 1,2-Diphenyldiazene oxide

  • Casno:

    495-48-7

    1,2-Diphenyldiazene oxide

    Min.Order: 10 Milligram

    FOB Price:  USD $ 0.0-0.0

    1.Professional synthesis laboratory and production base. 2.Strong synthesis team and service team. 3.Professional data management system. 4.We provide the professional test date and product information ,ex. HNMR ,CNMR,FNMR, HPLC/G

    Founded in 2011, Amadis Chemical Company Limited is an innovative manufacturer of chemical products and technical service providers. Our business includes sales, manufacture, and s

  • Amadis Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-571-89925085

    Address:Watts Cosine.No.166.Xiangmao Road.

       Inquiry Now

  • Diazene, 1,2-diphenyl-,1-oxide  CAS NO.495-48-7

  • Casno:

    495-48-7

    Diazene, 1,2-diphenyl-,1-oxide CAS NO.495-48-7

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Price, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right

    Changchun Haofei Import and Export Trade Co. , Ltd is located in Changchun, Changchun, Jilin Province. We are a modern high-tech private enterprise specializing in the R & D, Produ

  • Jilin haofei import and export trade Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+8615643102578

    Address:303 Room, Guanghui Park, Huanghe Road, Kuancheng District

       Inquiry Now

  • Azoxybenzene,

  • Casno:

    495-48-7

    Azoxybenzene,

    Min.Order: 1 Gram

    FOB Price:  USD $ 0.0-0.0

    At Share Chemical Company, we scrupulously abide by our policy of “Excellent Quality at a Reasonable Price”. We strive to satisfy all of our customers by providing the finest quality products supported by the finest in customer servi

    Share Chemical Co., Ltd. is an innovative chemical producer engaged in the production of organic specialty chemicals, pharmaceuticals, and fine chemicals of high purity for product

  • Hangzhou Share Chemical Co., Ltd

    China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:+86-57187093700

    Address:Hang Xing Road

       Inquiry Now

  • Diazene, 1,2-diphenyl-,1-oxide

  • Casno:

    495-48-7

    Diazene, 1,2-diphenyl-,1-oxide

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    1 good quality, better price and bettter service;2 Timely delivery;3 100% refunded if parcel is t delivered or poor quality.We will try to satisfy you upon receipt of your reply. I hope that we can become a long-term cooperative partner. Application:

    Shanghai PotentPharm Technology Co., Ltd is located in Pudong New District of Shanghai. As a high-tech medicine and chemical company, we commit ourselves to developing forefront ch

  • Shanghai PotentPharm Science and Technology Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-021-51969655

    Address:Unit B, Building 18, No.300, Chuantu Rd,Pudong District, Shanghai 201202, China

       Inquiry Now

  • AZOXYBENZENE

  • Casno:

    495-48-7

    AZOXYBENZENE

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    FINETECH INDUSTRY LIMITED is a LONDON based CRO company providing drug discovery & development services to worldwide clients. FINETECH INDUSTRY LIMITED supplies the AZOXYBENZENE, CAS:495-48-7 with the most competitive price and the best quality. We c

    Finetech Industry Limited is a company in England,which specializing in developing, manufacturing and marketing fine organic compounds and intermediates for the fine chemical and p

  • Finetech Industry Limited

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-27-87465837

    Address:wuhan

       Inquiry Now

  • Azoxybenzene, 98+%

  • Casno:

    495-48-7

    Azoxybenzene, 98+%

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Adequate stocks available,prompt shipment,Strictly control on quality,Timely after-sales

    Skyrun Industrial Co.Limited (CSR Ind), established in 2003, a state-controlled company(By Skyrun Corp. & High Hope) in China, specializing in developing, producing and handing ra

  • Skyrun Industrial Co.,Ltd

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:0086-576-84610586

    Address:Chemical Development Zone

       Inquiry Now

  • Total:26 Page 1 of 1 1
Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 495-48-7

Chemistry

Chemistry informtion about Azoxybenzene(CAS NO.495-48-7) is:
IUPAC Name: oxido-phenyl-phenyliminoazanium
Synonyms: (Z)-Diphenyldiazene N-Oxide;1,2-Diphenyldiazene 1-Oxide;Azobenzene, Oxide;Azobenzene,Oxide;Azossibenzene;Azoxybenzeen;Azoxybenzide;Azoxybenzol 
MF: C12H10N2O
MW: 198.22
EINECS: 207-802-1
Melting Point: 32-36 °C 
Density: 1.09 g/cm3
Flash Point: 157 °C
Enthalpy of Vaporization: 55.62 kJ/mol
Boiling Point: 336 °C at 760 mmHg
Vapour Pressure: 0.000224 mmHg at 25°C 
Product Categories: Pharmaceutical Intermediates
Following is the molecular structure of Azoxybenzene(CAS NO.495-48-7) is:

Uses

Azoxybenzene(CAS NO.495-48-7) was used as organic synthesis intermediate.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 oral 515mg/kg (515mg/kg) GASTROINTESTINAL: OTHER CHANGES

LIVER: OTHER CHANGES
Kyoritsu Yakka Daigaku Kenkyu Nenpo. Annual Report of the Kyoritsu College of Pharmacy. Vol. 21, Pg. 25, 1976.
mouse LDLo intraperitoneal 500mg/kg (500mg/kg)   "Summary Tables of Biological Tests," National Research Council Chemical-Biological Coordination Center. Vol. 7, Pg. 389, 1955.
rabbit LD50 skin 1350mg/kg (1350mg/kg)   "Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86Vol. A195, Pg. 1983,
rabbit LDLo subcutaneous 275mg/kg (275mg/kg) GASTROINTESTINAL: OTHER CHANGES

KIDNEY, URETER, AND BLADDER: OTHER CHANGES
Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 35, Pg. 401, 1895.
rat LD50 intraperitoneal 940mg/kg (940mg/kg)   "Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86Vol. A195, Pg. 1983,
rat LD50 oral 620mg/kg (620mg/kg)   AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 10, Pg. 61, 1954.

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Poison by subcutaneous route. Moderately toxic by ingestion, skin contact, and other routes. A skin and eye irritant. Mutation data reported. Combustible. When heated to decomposition it emits toxic fumes of NOx.
Hazard Codes:HarmfulXn
Risk Statements:
R20/22:Harmful by inhalation and if swallowed. 
Safety Statements:
S28:After contact with skin, wash immediately with plenty of soap-suds.
RTECS: CO4025000

Specification

Azoxybenzene(CAS NO.495-48-7) is a bright yellow crystals or yellowish-brown solid.Dust may form an explosive mixture in air and it insoluble in water. 
It is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides. however, Azoxybenzene(CAS NO.495-48-7) is probably combustible.